/* ============================================================
   LLVM Dev Meeting Knowledge Base — Design System
   OpenAlex-inspired visual system, light/dark via CSS variables
   ============================================================ */

/* ============================================================
   CSS Custom Properties — Light Mode (default)
   ============================================================ */
:root {
  /* Color — Base (OpenAlex light) */
  --color-bg:            #f5f5f5;
  --color-surface:       #ffffff;
  --color-surface-hover: #f0f0f0;
  --color-border:        #e0e0e0;
  --color-border-focus:  #111827;
  --color-text:          #111827;
  --color-text-muted:    #6b7280;
  --color-text-inverse:  #ffffff;
  --color-accent:        #374151;
  --color-accent-hover:  #111827;
  --color-accent-bg:     #f3f4f6;
  --color-accent-subtle: #f0f0f0;
  --color-divider:       #e0e0e0;
  --color-border-strong: #9ca3af;
  --color-text-subtle:   #9ca3af;
  --color-surface-subtle:#f7f7f7;
  --color-state-active-bg:     #f3f4f6;
  --color-state-active-border: #d1d5db;
  --color-state-active-text:   #111827;
  --color-primary-btn-bg:         #1a1a1a;
  --color-primary-btn-border:     #1a1a1a;
  --color-primary-btn-text:       #ffffff;
  --color-primary-btn-hover-bg:   #333333;
  --color-primary-btn-hover-border:#333333;
  --color-primary-btn-hover-text: #ffffff;
  --color-hover-veil:          rgba(17, 24, 39, 0.08);
  --color-media-control-bg:    rgba(255, 255, 255, 0.94);
  --color-media-control-fg:    #111827;
  --color-media-overlay-hover: rgba(0, 0, 0, 0.12);
  --color-chip-remove-hover:   #e5e7eb;
  --color-field-focus-ring:    rgba(37, 99, 235, 0.18);

  /* Color — Category Badges */
  --badge-keynote-bg:      #fef3c7;
  --badge-keynote-text:    #92400e;
  --badge-technical-bg:    #dcfce7;
  --badge-technical-text:  #166534;
  --badge-tutorial-bg:     #ede9fe;
  --badge-tutorial-text:   #6d28d9;
  --badge-lightning-bg:    #ffedd5;
  --badge-lightning-text:  #c2410c;
  --badge-quick-bg:        #ffe4e6;
  --badge-quick-text:      #be123c;
  --badge-panel-bg:        #e0f2fe;
  --badge-panel-text:      #0369a1;
  --badge-bof-bg:          #fce7f3;
  --badge-bof-text:        #be185d;
  --badge-student-bg:      #ecfccb;
  --badge-student-text:    #4d7c0f;
  --badge-foundation-bg:   #dbeafe;
  --badge-foundation-text: #1d4ed8;
  --badge-poster-bg:       #f3f4f6;
  --badge-poster-text:     #374151;
  --badge-workshop-bg:     #ccfbf1;
  --badge-workshop-text:   #0f766e;
  --badge-paper-bg:        #e3f2fd;
  --badge-paper-text:      #1976d2;
  --badge-blog-bg:         #e0f7f4;
  --badge-blog-text:       #0f766e;
  --badge-other-bg:        #f1f5f9;
  --badge-other-text:      #475569;

  /* Color — Misc */
  --color-error:       #dc2626;
  --color-success:     #16a34a;
  --color-overlay:     rgba(17, 24, 39, 0.44);

  /* Spacing (4px base) */
  --space-1:   4px;
  --space-2:   8px;
  --space-3:   12px;
  --space-4:   16px;
  --space-5:   20px;
  --space-6:   24px;
  --space-8:   32px;
  --space-10:  40px;
  --space-12:  48px;
  --space-16:  64px;
  --space-20:  80px;

  /* Typography */
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  --font-mono:    'Fira Code', 'SF Mono', 'Consolas', 'Liberation Mono', Menlo, monospace;

  --font-size-xs:   12px;
  --font-size-sm:   13px;
  --font-size-base: 16px;
  --font-size-md:   16px;
  --font-size-lg:   20px;
  --font-size-xl:   24px;
  --font-size-2xl:  32px;
  --font-size-3xl:  40px;

  --line-height-tight:  1.3;
  --line-height-snug:   1.45;
  --line-height-base:   1.6;
  --line-height-loose:  1.8;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semi:   600;
  --font-weight-bold:   700;

  /* Border Radius */
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   8px;
  --radius-xl:   12px;
  --radius-full: 4px;

  /* Shadows */
  --shadow-xs:    0 1px 1px rgba(0, 0, 0, 0.04);
  --shadow-sm:    0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md:    0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg:    0 10px 28px rgba(15, 23, 42, 0.10);
  --shadow-hover: 0 2px 8px rgba(15, 23, 42, 0.08);

  /* Transitions */
  --transition-fast: 100ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-Index */
  --z-base:    1;
  --z-sticky:  100;
  --z-overlay: 200;
  --z-modal:   300;
  --z-tooltip: 400;

  /* Layout */
  --max-width:        1280px;
  --max-width-narrow: 760px;
  --header-height:    70px;
  --sidebar-width:    clamp(236px, 21vw, 308px);
  --sidebar-collapsed-width: clamp(48px, 4.2vw, 56px);
  --layout-edge:      clamp(12px, 1.8vw, 26px);
}

/* ============================================================
   Typography Scale Overrides
   ============================================================ */
:root[data-text-size="small"] {
  --font-size-xs:   10px;
  --font-size-sm:   12px;
  --font-size-base: 14px;
  --font-size-md:   15px;
  --font-size-lg:   18px;
  --font-size-xl:   22px;
  --font-size-2xl:  30px;
  --font-size-3xl:  36px;
}

:root[data-text-size="large"] {
  --font-size-xs:   12px;
  --font-size-sm:   14px;
  --font-size-base: 17px;
  --font-size-md:   18px;
  --font-size-lg:   22px;
  --font-size-xl:   27px;
  --font-size-2xl:  36px;
  --font-size-3xl:  44px;
}

/* ============================================================
   CSS Custom Properties — Dark Mode
   ============================================================ */
[data-theme="dark"] {
  --color-bg:            #0d0d0d;
  --color-surface:       #141414;
  --color-surface-hover: #1b1b1b;
  --color-border:        #2b2b2b;
  --color-border-focus:  #ffffff;
  --color-text:          #f5f5f5;
  --color-text-muted:    #b3b3b3;
  --color-text-inverse:  #000000;
  --color-accent:        #93c5fd;
  --color-accent-hover:  #bfdbfe;
  --color-accent-bg:     rgba(147, 197, 253, 0.2);
  --color-accent-subtle: #1a1a1a;
  --color-divider:       #232323;
  --color-border-strong: #6b7280;
  --color-text-subtle:   #8f8f8f;
  --color-surface-subtle:#191919;
  --color-state-active-bg:     #1f1f1f;
  --color-state-active-border: #3a3a3a;
  --color-state-active-text:   #f5f5f5;
  --color-primary-btn-bg:          #27272a;
  --color-primary-btn-border:      #3f3f46;
  --color-primary-btn-text:        #f5f5f5;
  --color-primary-btn-hover-bg:    #323236;
  --color-primary-btn-hover-border:#52525b;
  --color-primary-btn-hover-text:  #f5f5f5;
  --color-hover-veil:          rgba(255, 255, 255, 0.08);
  --color-media-control-bg:    rgba(31, 41, 55, 0.95);
  --color-media-control-fg:    #f9fafb;
  --color-media-overlay-hover: rgba(255, 255, 255, 0.08);
  --color-chip-remove-hover:   #2f2f2f;
  --color-field-focus-ring:    rgba(147, 197, 253, 0.25);

  --badge-keynote-bg:      rgba(217, 119, 6, 0.25);
  --badge-keynote-text:    #fbbf24;
  --badge-technical-bg:    rgba(34, 197, 94, 0.25);
  --badge-technical-text:  #4ade80;
  --badge-tutorial-bg:     rgba(139, 92, 246, 0.25);
  --badge-tutorial-text:   #c4b5fd;
  --badge-lightning-bg:    rgba(249, 115, 22, 0.25);
  --badge-lightning-text:  #fdba74;
  --badge-quick-bg:        rgba(244, 63, 94, 0.25);
  --badge-quick-text:      #fda4af;
  --badge-panel-bg:        rgba(14, 165, 233, 0.25);
  --badge-panel-text:      #7dd3fc;
  --badge-bof-bg:          rgba(217, 70, 239, 0.25);
  --badge-bof-text:        #f0abfc;
  --badge-student-bg:      rgba(132, 204, 22, 0.25);
  --badge-student-text:    #bef264;
  --badge-foundation-bg:   rgba(59, 130, 246, 0.28);
  --badge-foundation-text: #93c5fd;
  --badge-poster-bg:       rgba(148, 163, 184, 0.22);
  --badge-poster-text:     #cbd5e1;
  --badge-workshop-bg:     rgba(20, 184, 166, 0.24);
  --badge-workshop-text:   #5eead4;
  --badge-paper-bg:        rgba(187, 128, 9, 0.25);
  --badge-paper-text:      #e3b341;
  --badge-blog-bg:         rgba(20, 184, 166, 0.22);
  --badge-blog-text:       #5eead4;
  --badge-other-bg:        rgba(107, 114, 128, 0.24);
  --badge-other-text:      #d1d5db;

  --shadow-xs:    0 1px 0 rgba(0, 0, 0, 0.45);
  --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md:    0 8px 22px rgba(0, 0, 0, 0.45);
  --shadow-lg:    0 14px 30px rgba(0, 0, 0, 0.52);
  --shadow-hover: 0 6px 18px rgba(0, 0, 0, 0.42);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
}

p, li {
  color: inherit;
  line-height: inherit;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: var(--font-sans);
}

ul, ol {
  list-style: none;
}

/* ============================================================
   Site Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-4);
  transition: border-color var(--transition-base), background var(--transition-base);
}

.site-logo {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-logo:hover {
  color: var(--color-text);
}

.site-logo-icon {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
}

.nav-link {
  height: 32px;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  padding: 0 var(--space-1);
  border: 0;
  border-radius: 0;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-text);
  background: transparent;
  border-color: transparent;
}

.site-nav-separator {
  color: var(--color-text-subtle);
  font-size: var(--font-size-sm);
  line-height: 1;
  user-select: none;
  pointer-events: none;
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-dropdown-toggle svg {
  transition: transform var(--transition-fast);
}

.nav-dropdown-menu {
  position: absolute;
  left: 0;
  top: calc(100% - 1px);
  min-width: 170px;
  padding: var(--space-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: calc(var(--z-sticky) + 1);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  display: grid;
}

.nav-dropdown:hover .nav-dropdown-toggle svg,
.nav-dropdown:focus-within .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-dropdown-link {
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--color-text-muted);
  background: transparent;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: 0 var(--space-2);
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.nav-dropdown-link:hover,
.nav-dropdown-link.active,
.nav-dropdown-link[aria-current="page"] {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.global-search-form {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-width: clamp(240px, 34vw, 420px);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: visible;
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.global-search-form:focus-within {
  border-color: var(--color-border-focus);
  box-shadow: none;
}

.global-search-input {
  width: 100%;
  height: 38px;
  border: 0;
  border-right: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
  color: var(--color-text);
  padding: 0 10px;
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.global-search-form:not(.search-box) .global-search-input {
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
}

.global-search-input::placeholder {
  color: var(--color-text-subtle);
}

.global-search-form:focus-within .global-search-input {
  border-right-color: var(--color-border-focus);
}

.global-search-submit {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0;
  color: var(--color-text-muted);
  background: transparent;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.global-search-submit:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.global-search-form:focus-within .global-search-submit {
  color: var(--color-text);
}

.header-action-btn {
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
  color: var(--color-text);
  background: transparent;
  border: 0;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.header-action-btn:hover {
  color: var(--color-text);
  background: transparent;
  border-color: transparent;
}

.header-action-btn.is-success {
  color: var(--color-accent);
  border-color: var(--color-border-focus);
  background: var(--color-accent-bg);
}

/* Share Menu */
.share-menu {
  position: relative;
}

.share-toggle {
  min-width: 72px;
  gap: 6px;
}

.share-toggle::before {
  content: "";
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  display: inline-block;
  background-color: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='6' cy='12' r='2.4'/%3E%3Ccircle cx='18' cy='6' r='2.4'/%3E%3Ccircle cx='18' cy='18' r='2.4'/%3E%3Cpath d='M8.2 10.8l7.2-3.6M8.2 13.2l7.2 3.6'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='6' cy='12' r='2.4'/%3E%3Ccircle cx='18' cy='6' r='2.4'/%3E%3Ccircle cx='18' cy='18' r='2.4'/%3E%3Cpath d='M8.2 10.8l7.2-3.6M8.2 13.2l7.2 3.6'/%3E%3C/svg%3E");
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
}

.share-panel {
  position: absolute;
  right: 0;
  top: calc(100% + var(--space-2));
  width: 220px;
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  display: none;
  gap: var(--space-1);
  z-index: calc(var(--z-sticky) + 1);
}

.share-menu.open .share-panel {
  display: grid;
}

.share-panel[hidden] {
  display: none !important;
}

.share-option {
  height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: 0 var(--space-3);
  text-align: left;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.share-option:hover {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-border-focus);
}

/* Mobile Navigation Menu */
.mobile-nav-menu {
  display: none;
  position: relative;
  flex-shrink: 0;
}

.mobile-nav-toggle {
  height: 34px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 0 10px;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.mobile-nav-toggle-icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-toggle-icon svg {
  display: block;
}

.mobile-nav-menu.open .mobile-nav-toggle,
.mobile-nav-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border-focus);
}

.mobile-nav-panel {
  position: absolute;
  right: 0;
  left: auto;
  top: calc(100% + var(--space-2));
  width: min(280px, calc(100vw - 16px));
  min-width: 220px;
  max-width: calc(100vw - 16px);
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  display: none;
  max-height: calc(100vh - var(--header-height) - var(--space-3));
  max-height: calc(100dvh - var(--header-height) - var(--space-3));
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  gap: var(--space-2);
  z-index: calc(var(--z-sticky) + 1);
}

.mobile-nav-menu.open .mobile-nav-panel {
  display: grid;
}

.mobile-nav-panel[hidden] {
  display: none !important;
}

.mobile-nav-group {
  display: grid;
  gap: var(--space-1);
}

.mobile-nav-group + .mobile-nav-group {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-2);
}

.mobile-nav-group-label {
  margin: 0;
  padding: 0 var(--space-2);
  color: var(--color-text-muted);
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mobile-nav-link {
  min-height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  color: var(--color-text-muted);
  background: transparent;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: 0 var(--space-2);
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border);
}

.mobile-nav-link--button {
  width: 100%;
  text-align: left;
  cursor: pointer;
  font: inherit;
}

.mobile-nav-group-settings {
  gap: var(--space-2);
}

.mobile-nav-setting {
  display: grid;
  gap: 6px;
  padding: 0 var(--space-2);
}

.mobile-nav-setting-label {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.mobile-nav-setting-select {
  width: 100%;
  height: 36px;
}

/* Customization Menu */
.customization-menu {
  position: relative;
}

.customization-toggle {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  font-size: 16px;
  line-height: 1;
}

.customization-toggle:hover,
.customization-menu.open .customization-toggle {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border-focus);
}

.customization-panel {
  position: absolute;
  right: 0;
  top: calc(100% + var(--space-2));
  width: 220px;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  display: none;
  gap: var(--space-3);
  z-index: calc(var(--z-sticky) + 1);
}

.customization-menu.open .customization-panel {
  display: grid;
}

.customization-panel[hidden] {
  display: none !important;
}

.customization-group {
  display: grid;
  gap: 6px;
}

.customization-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

.customization-select {
  width: 100%;
  height: 34px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-hover);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.2;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.customization-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-field-focus-ring);
  background: var(--color-surface);
}

.customization-reset {
  width: 100%;
  height: 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.customization-reset:hover {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-border-focus);
}

.customization-menu .icon-customize {
  display: block;
}

/* ============================================================
   Search Hero
   ============================================================ */
.search-hero {
  padding: var(--space-3) var(--layout-edge) var(--space-2);
  padding-left: calc(var(--sidebar-width) + (var(--layout-edge) * 2));
}

.search-hero--compact {
  padding: var(--space-2) var(--layout-edge) var(--space-2);
  padding-left: var(--layout-edge);
}

body.filter-collapsed .search-hero {
  padding-left: calc(var(--sidebar-collapsed-width) + (var(--layout-edge) * 2));
}

.search-hero-shell {
  max-width: min(var(--max-width), calc(100vw - var(--sidebar-width) - (var(--layout-edge) * 3)));
  margin: 0 auto;
  padding: var(--space-1) 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  text-align: left;
  transition: max-width var(--transition-base);
}

body.filter-collapsed .search-hero-shell {
  max-width: min(var(--max-width), calc(100vw - var(--sidebar-collapsed-width) - (var(--layout-edge) * 3)));
}

.search-hero--compact .search-hero-shell,
body.filter-collapsed .search-hero--compact .search-hero-shell {
  max-width: min(var(--max-width), calc(100vw - (var(--layout-edge) * 2)));
}

.search-hero h1 {
  font-size: 40px;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.search-hero-title-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.search-hero-title-row h1 {
  margin-bottom: 0;
}

.search-hero-title-aside {
  margin: 0;
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  line-height: 1.35;
}

.search-hero .subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  font-weight: var(--font-weight-normal);
}

.search-hero .subtitle strong {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.search-box {
  position: relative;
  max-width: none;
  margin: 0;
}

.search-input {
  width: 100%;
  height: 52px;
  padding: 0 44px 0 42px;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  -webkit-appearance: none;
}

.search-input::placeholder {
  color: var(--color-text-subtle);
}

.search-input:focus {
  background: var(--color-surface);
  border-color: var(--color-border-focus);
  box-shadow: none;
}

.search-input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
}

.search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: var(--color-surface-hover);
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.search-clear:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.search-clear.visible {
  display: flex;
}

.global-search-form.has-advanced-search {
  overflow: visible;
}

.search-box.global-search-form {
  display: grid;
  width: 100%;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-surface);
  gap: 0;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.search-box.global-search-form:focus-within {
  border-color: var(--color-border-focus);
}

.search-box.global-search-form .global-search-main-row {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 52px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
}

.search-box.global-search-form .global-search-main-row:focus-within {
  border-color: var(--color-border-focus);
}

.search-box.global-search-form .global-search-input {
  height: 50px;
  padding: 0 40px 0 40px;
  border: 0;
  border-right: 0;
  border-radius: 0;
  background: transparent;
}

.search-box.global-search-form:focus-within .global-search-input {
  border-right: 0;
}

.search-box.global-search-form .search-icon {
  left: 12px;
  top: 50%;
}

.search-box.global-search-form .search-clear {
  right: 10px;
  top: 50%;
}

.global-search-tools-row {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.global-search-tools-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1 1 auto;
  min-width: 0;
}

.global-search-context-pill {
  height: 30px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-surface);
  white-space: nowrap;
}

.global-search-scope-switch {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
}

.global-search-scope-btn {
  height: 30px;
  border: 0;
  border-right: 1px solid var(--color-border);
  border-radius: 0;
  padding: 0 10px;
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.global-search-scope-btn:last-child {
  border-right: 0;
}

.global-search-scope-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.global-search-scope-btn.active {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.global-search-advanced-toggle {
  height: 30px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.global-search-advanced-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.global-search-advanced-toggle.active {
  color: var(--color-text);
}

.global-search-advanced-switch {
  width: 30px;
  height: 16px;
  border-radius: 999px;
  background: var(--color-border);
  border: 1px solid transparent;
  padding: 1px;
  display: inline-flex;
  align-items: center;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.global-search-advanced-switch-knob {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  transform: translateX(0);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.global-search-advanced-toggle.active .global-search-advanced-switch {
  background: var(--color-border-focus);
  border-color: var(--color-border-focus);
}

.global-search-advanced-toggle.active .global-search-advanced-switch-knob {
  transform: translateX(12px);
  background: var(--color-text-inverse);
}

.global-search-advanced-state {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.global-search-advanced-toggle.active .global-search-advanced-state {
  color: var(--color-text);
}

.global-search-advanced-count {
  display: none !important;
}

.search-box.global-search-form .global-search-advanced-toggle {
  position: static;
  height: 30px;
  min-width: 168px;
  padding: 0 10px;
  z-index: auto;
  flex-shrink: 0;
}

.search-box.global-search-form .global-search-advanced-count {
  min-width: 16px;
  height: 16px;
  font-size: 9px;
}

.search-box.global-search-form.advanced-open .global-search-advanced-toggle {
  border-color: var(--color-border-focus);
  color: var(--color-text);
}

.global-search-form:not(.search-box) .global-search-advanced-toggle {
  width: auto;
  min-width: 88px;
  height: 38px;
  border-top: 0;
  border-right: 0;
  border-bottom: 0;
  border-left: 1px solid var(--color-border);
  padding: 0 8px;
  flex-shrink: 0;
}

.global-search-form:not(.search-box):focus-within .global-search-advanced-toggle {
  border-left-color: var(--color-border-focus);
}

.global-search-advanced-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 80;
  width: min(760px, calc(100vw - 24px));
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.search-box.global-search-form .global-search-advanced-panel {
  position: static;
  width: 100%;
  margin-top: 8px;
  box-shadow: none;
}

.global-search-advanced-panel.hidden {
  display: none;
}

.global-search-advanced-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.global-search-advanced-title {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.global-search-advanced-context {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.global-search-advanced-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.global-search-advanced-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.global-search-advanced-field--year-range {
  grid-column: span 2;
}

.global-search-advanced-field > span {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

.global-search-advanced-date-range {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
}

.global-search-advanced-date-sep {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: lowercase;
}

.global-search-advanced-input {
  width: 100%;
  min-height: 32px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 0 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: var(--color-surface);
}

.global-search-advanced-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

.global-search-advanced-actions {
  margin-top: 12px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.global-search-advanced-btn {
  min-height: 30px;
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 0 10px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  background: var(--color-surface);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.global-search-advanced-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.global-search-advanced-btn--primary {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.search-box.global-search-form .search-dropdown {
  top: calc(100% + 8px);
}

/* Search Autocomplete Dropdown */
.search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  z-index: var(--z-overlay);
  overflow: hidden;
  max-height: 360px;
  overflow-y: auto;
}

.search-dropdown.hidden {
  display: none;
}

.search-dropdown-section {
  padding: var(--space-1) 0;
}

.search-dropdown-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-2) var(--space-4) var(--space-1);
}

.search-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-align: left;
  width: 100%;
  border: none;
  background: none;
  font-family: var(--font-sans);
}

.search-dropdown-item:hover,
.search-dropdown-item[aria-selected="true"] {
  background: var(--color-surface-hover);
}

.search-dropdown-item-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.search-dropdown-item-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-dropdown-item-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.search-dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-1) 0;
}

.search-dropdown-item mark {
  background: none;
  color: var(--color-accent);
  font-weight: var(--font-weight-semi);
  padding: 0;
}

.search-dropdown-section--action {
  padding-top: var(--space-2);
}

.search-dropdown-item--action {
  font-weight: var(--font-weight-semi);
}

.search-dropdown-item--action .search-dropdown-item-count {
  color: var(--color-accent);
}

/* ============================================================
   Active Filters Strip
   ============================================================ */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
  padding: var(--space-3) 0 0;
  max-width: none;
  margin: 0;
}

.active-filters.hidden {
  display: none;
}

/* Individual active-filter pill */
.active-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px 4px 12px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-state-active-text);
  background: var(--color-state-active-bg);
  border: 1px solid var(--color-state-active-border);
  border-radius: var(--radius-full);
  white-space: nowrap;
  line-height: 1;
}

.active-filter-pill__type {
  font-size: var(--font-size-xs);
  opacity: 0.7;
  font-weight: var(--font-weight-normal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.active-filter-pill__remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0;
  opacity: 0.7;
  transition: opacity var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
}

.active-filter-pill__remove:hover {
  opacity: 1;
  background: var(--color-chip-remove-hover);
}

.active-filter-pill__work {
  display: inline-flex;
  align-items: center;
  margin-left: 2px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  line-height: 1.2;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.active-filter-pill__work:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}

/* ============================================================
   Filter Bar
   ============================================================ */
.hub-layout {
  max-width: none;
  margin: 0;
  padding: var(--space-3) var(--layout-edge) var(--space-12);
  padding-left: calc(var(--sidebar-width) + (var(--layout-edge) * 2));
  display: block;
  transition: padding-left var(--transition-base);
}

body.filter-collapsed .hub-layout {
  padding-left: calc(var(--sidebar-collapsed-width) + (var(--layout-edge) * 2));
}

.hub-layout--work,
body.filter-collapsed .hub-layout--work {
  padding-left: var(--layout-edge);
}

.feed-column {
  min-width: 0;
  max-width: min(var(--max-width), calc(100vw - var(--sidebar-width) - (var(--layout-edge) * 3)));
  margin: 0 auto;
  transition: max-width var(--transition-base);
}

body.filter-collapsed .feed-column {
  max-width: min(var(--max-width), calc(100vw - var(--sidebar-collapsed-width) - (var(--layout-edge) * 3)));
}

.hub-layout--work .feed-column,
body.filter-collapsed .hub-layout--work .feed-column {
  max-width: min(var(--max-width), calc(100vw - (var(--layout-edge) * 2)));
}

.filter-section {
  position: fixed;
  top: calc(var(--header-height) + var(--layout-edge));
  left: var(--layout-edge);
  bottom: var(--layout-edge);
  width: var(--sidebar-width);
  max-height: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: none;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  z-index: calc(var(--z-sticky) - 1);
  transition: width var(--transition-base), padding var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

body.filter-collapsed .filter-section {
  width: var(--sidebar-collapsed-width);
  padding: var(--space-2);
}

.filter-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
  position: sticky;
  top: 0;
  background: var(--color-surface);
  z-index: 1;
  flex-shrink: 0;
}

.filter-sidebar-head h2 {
  margin: 0;
  font-size: 11px;
  font-weight: var(--font-weight-semi);
  letter-spacing: normal;
  text-transform: none;
  color: var(--color-text-muted);
}

.filter-collapse-btn {
  margin-left: auto;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.filter-collapse-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-focus);
  background: var(--color-surface-hover);
}

.filter-collapse-btn svg {
  transition: transform var(--transition-fast);
}

.filter-sidebar-body {
  flex: none;
  min-height: auto;
  overflow: visible;
  padding-right: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.filter-accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
}

.filter-accordion-toggle {
  width: 100%;
  min-height: 34px;
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  text-transform: none;
  letter-spacing: normal;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.filter-accordion-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.filter-accordion-toggle svg {
  transition: transform var(--transition-fast);
}

.filter-accordion-panel {
  padding: var(--space-3);
  overflow: visible;
}

.filter-accordion.is-collapsed .filter-accordion-toggle {
  border-bottom-color: transparent;
}

.filter-accordion.is-collapsed .filter-accordion-toggle svg {
  transform: rotate(-90deg);
}

body.filter-collapsed .filter-sidebar-head {
  margin-bottom: 0;
  justify-content: center;
}

body.filter-collapsed .filter-sidebar-head h2,
body.filter-collapsed #clear-filters,
body.filter-collapsed .filter-sidebar-body {
  display: none;
}

body.filter-collapsed .filter-collapse-btn {
  margin-left: 0;
}

body.filter-collapsed .filter-collapse-btn svg {
  transform: rotate(180deg);
}

.filter-scroll {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: none;
  margin: 0;
  padding: 0;
  overflow: visible;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.filter-group--event {
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  gap: var(--space-2);
}

.filter-cluster {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.filter-group-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  text-transform: none;
  letter-spacing: 0;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.filter-group-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  opacity: 0.9;
}

.filter-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
  flex-shrink: 0;
  margin: 0 var(--space-1);
}

/* Filter Chip */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px 10px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  line-height: 1;
}

.filter-chip:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
  border-color: var(--color-border);
}

.filter-chip.active {
  color: var(--color-state-active-text);
  background: var(--color-state-active-bg);
  border-color: var(--color-state-active-border);
}

.filter-chip.active:hover {
  background: var(--color-surface-hover);
}

.filter-chip-count {
  font-size: var(--font-size-xs);
  color: inherit;
  opacity: 0.7;
}

.filter-chip--type {
  gap: 0;
  padding: 0;
  border: 0;
  background: transparent;
  border-radius: var(--radius-md);
  overflow: hidden;
  align-items: stretch;
  min-height: 30px;
}

.filter-chip--type:hover {
  background: transparent;
  border-color: transparent;
}

.filter-chip--type .filter-chip-type-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  min-height: 30px;
  padding: 0 10px;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  line-height: 1;
}

.filter-chip--type .filter-chip-type-count {
  min-width: 30px;
  min-height: 30px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  opacity: 1;
}

.filter-chip--type.active {
  color: inherit;
  background: transparent;
  border-color: transparent;
  box-shadow: 0 0 0 2px var(--color-border-focus);
}

.filter-chip--type.active:hover {
  background: transparent;
}

.filter-chip--type.active .filter-chip-type-count {
  border-color: var(--color-border-focus);
}

.btn-clear-filters {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: 5px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  white-space: nowrap;
  flex-shrink: 1;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.btn-clear-filters:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

/* ============================================================
   Results Bar
   ============================================================ */
.results-bar {
  max-width: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  position: static;
  top: auto;
  z-index: auto;
  background: transparent;
  backdrop-filter: none;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.results-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  flex-wrap: wrap;
}

.results-controls {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  min-width: 0;
}

.work-scope-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.work-scope-toggle[hidden] {
  display: none !important;
}

.work-scope-btn {
  min-height: 26px;
  border: 0;
  border-radius: calc(var(--radius-md) - 2px);
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.work-scope-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.work-scope-btn.active {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.work-scope-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  color: var(--color-text-muted);
  background: var(--color-bg);
}

.work-scope-btn.active .work-scope-count {
  color: var(--color-text);
}

.results-sort-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.results-sort-select {
  height: 30px;
  border-radius: var(--radius-md);
  padding: 0 28px 0 var(--space-2);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  min-width: 0;
}

.work-advanced-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  min-width: 30px;
  max-width: 30px;
  height: 30px;
  gap: 0;
  padding: 0;
  cursor: pointer;
}

.work-advanced-state {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.work-advanced-toggle.active {
  border-color: var(--color-border-focus);
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.work-advanced-switch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 1px;
  display: inline-flex;
  justify-content: flex-start;
  align-items: flex-start;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.work-advanced-switch-knob {
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--color-text-muted);
  box-shadow: none;
  transform: translate(0, 0);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.work-advanced-toggle.active .work-advanced-switch {
  background: var(--color-accent-bg);
  border-color: var(--color-border-focus);
}

.work-advanced-toggle.active .work-advanced-switch-knob {
  transform: translate(6px, 6px);
  background: var(--color-border-focus);
}

.work-advanced-toggle.active .work-advanced-state {
  color: var(--color-text);
}

.work-advanced-count {
  display: none !important;
}

.work-advanced-panel {
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  display: grid;
  gap: var(--space-3);
}

.work-advanced-panel.hidden {
  display: none !important;
}

.work-advanced-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.work-advanced-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.work-advanced-field > span {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.work-advanced-input {
  width: 100%;
  height: 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0 10px;
  font-size: var(--font-size-sm);
}

.work-advanced-date-range {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.work-advanced-actions {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.work-advanced-btn {
  height: 32px;
  border-radius: var(--radius-md);
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.work-advanced-btn:hover {
  border-color: var(--color-border-focus);
  background: var(--color-surface-hover);
}

.work-advanced-btn--primary {
  border-color: var(--color-primary-btn-border);
  background: var(--color-primary-btn-bg);
  color: var(--color-primary-btn-text);
}

.work-advanced-btn--primary:hover {
  border-color: var(--color-primary-btn-hover-border);
  background: var(--color-primary-btn-hover-bg);
  color: var(--color-primary-btn-hover-text);
}

.work-custom-range {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.work-custom-range.hidden {
  display: none !important;
}

.work-year-input {
  width: 84px;
  min-width: 84px;
  padding-left: 8px;
  padding-right: 8px;
}

.work-custom-range-sep {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.results-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.results-count strong {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.results-context {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.mobile-filter-toggle,
.mobile-filter-close,
.mobile-filter-footer,
.mobile-filter-scrim {
  display: none;
}

.mobile-filter-toggle {
  height: 30px;
  border-radius: var(--radius-md);
  padding: 0 var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.mobile-filter-toggle:hover {
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border-color: var(--color-border-focus);
}

.view-toggle {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.view-btn {
  width: 30px;
  height: 30px;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: transparent;
  border: 0;
  border-left: 1px solid var(--color-border);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.view-btn:first-child {
  border-left: 0;
}

.view-btn:hover, .view-btn.active {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

/* ============================================================
   Talk Cards Grid
   ============================================================ */
.talks-container {
  max-width: none;
  margin: 0;
  padding: 0 0 var(--space-16);
}

.work-entity-back {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  text-decoration: none;
}

.work-entity-back:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.work-section {
  margin-bottom: var(--space-8);
}

.work-section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.work-section-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
}

.work-section-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.work-empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  color: var(--color-text-muted);
  background: color-mix(in srgb, var(--color-surface) 80%, transparent);
}

.work-more-btn {
  margin-top: var(--space-3);
  padding: 7px var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

.work-more-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.talks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-3);
}

.talks-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Talk Card */
/* Card: flex column so link-wrap | tags | footer stack cleanly */
.talk-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), background var(--transition-base);
  cursor: pointer;
}

.talk-card:hover {
  box-shadow: none;
  border-color: var(--color-border-strong);
  background: var(--color-surface);
}

.talk-card .card-link-wrap {
  color: inherit;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* Card Thumbnail */
.card-thumbnail {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-surface);
  overflow: hidden;
  flex-shrink: 0;
}

.card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.talk-card:hover .card-thumbnail img {
  transform: none;
}

.card-thumbnail-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-subtle);
}

.card-thumbnail-placeholder svg {
  color: var(--color-text-muted);
  opacity: 0.45;
}

.play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  transition: background var(--transition-base);
}

.talk-card:hover .play-overlay {
  background: var(--color-media-overlay-hover);
}

.play-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-media-control-bg);
  color: var(--color-media-control-fg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--transition-base), transform var(--transition-base);
  box-shadow: var(--shadow-md);
}

.talk-card:hover .play-btn {
  opacity: 1;
  transform: scale(1);
}

.play-btn svg {
  color: currentColor;
  margin-left: 3px; /* optical centering */
}

/* Card Body */
.card-body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.card-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semi);
  line-height: var(--line-height-snug);
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  letter-spacing: -0.01em;
}

.card-speakers {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: var(--font-weight-medium);
}

.card-abstract {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-base);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.paper-card .paper-thumbnail-placeholder {
  flex-direction: column;
  gap: var(--space-2);
  background: var(--color-surface-subtle);
}

.paper-card .paper-thumbnail-placeholder svg {
  color: var(--color-text-muted);
  opacity: 0.85;
}

.paper-card .paper-thumbnail-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.paper-card .card-speakers {
  padding: 0 var(--space-4);
}

.card-footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-divider);
}

.paper-citation-count {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.card-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: 4px var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1;
}

.card-link-btn--disabled {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}

.people-filter-row {
  margin-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.people-affiliation-select {
  min-width: min(360px, 100%);
  max-width: 420px;
}

.people-topic-select {
  min-width: min(300px, 100%);
  max-width: 360px;
}

.person-card .card-title {
  margin-bottom: 2px;
}

.person-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.person-topic-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-subtle);
  color: var(--color-text-muted);
  font-size: 11px;
}

.person-topic-name {
  color: var(--color-text);
}

.person-topic-count {
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.person-affiliation {
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.person-affiliation--empty {
  opacity: 0.7;
}

.person-affiliation-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 6px;
}

.person-affiliation-row {
  display: inline-flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  min-width: 0;
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-subtle);
  color: var(--color-text-muted);
  font-size: 11px;
}

.person-affiliation-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.person-affiliation-count {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

.person-variants {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 0 var(--space-4) var(--space-2);
}

.person-variants-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

.person-variant-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.person-variant-pill:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
  color: var(--color-accent);
  text-decoration: none;
}

.person-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.person-card-footer::-webkit-scrollbar {
  display: none;
}

.person-card-footer .card-link-btn {
  white-space: nowrap;
  flex: 0 0 auto;
  padding: 3px 8px;
  font-size: 11px;
}

.person-work-links {
  display: inline-flex;
  flex: 1 1 auto;
  min-width: max-content;
  flex-wrap: nowrap;
  gap: 6px;
}

.person-card-tools {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  justify-content: flex-end;
  margin-left: 6px;
}

.person-card-tools .report-issue-link {
  margin-left: 0;
  color: var(--color-text-muted);
  border-color: var(--color-border);
  background: transparent;
}

.person-card-tools .report-issue-link:hover {
  color: var(--color-text);
  border-color: var(--color-border-focus);
  background: var(--color-surface-hover);
}

/* Compact mode for people page keeps key actions while tightening content. */
.talks-list.people-grid .person-card .card-link-wrap {
  flex-direction: column;
}

.talks-list.people-grid .person-card .person-variants {
  display: none;
}

.talks-list.people-grid .person-card .card-footer {
  display: flex;
}

.talks-list.people-grid .person-card .card-title {
  -webkit-line-clamp: 1;
}

.card-link-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
  background: var(--color-surface-hover);
}

.card-link-btn--video {
  color: var(--color-primary-btn-text);
  border-color: var(--color-primary-btn-border);
  background: var(--color-primary-btn-bg);
  font-weight: var(--font-weight-semi);
}

.card-link-btn--video:hover {
  background: var(--color-primary-btn-hover-bg);
  border-color: var(--color-primary-btn-hover-border);
  color: var(--color-primary-btn-hover-text);
}

/* Card tags and footer are siblings of .card-link-wrap */
.card-tags-wrap {
  padding: 0 var(--space-4) var(--space-2);
}

/* Card Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  letter-spacing: 0.01em;
  line-height: 1.5;
  white-space: nowrap;
}

.card-tag:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.card-tag--more {
  color: var(--color-text-muted);
  cursor: default;
  pointer-events: none;
  background: transparent;
  border-color: transparent;
  font-style: normal;
}

.card-tag--paper {
  cursor: default;
  pointer-events: none;
}

/* Tag filter row — always visible, wraps across multiple lines */
.filter-tags-row {
  width: 100%;
  max-width: none;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.filter-tags-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.filter-group--wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

/* Secondary filter row (categories, years, toggles) */
.filter-scroll--secondary {
  border-top: 0;
  padding: 0;
  margin-top: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
  overflow: visible;
}

.filter-scroll--secondary .filter-cluster {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-1);
  width: 100%;
}

.filter-scroll--secondary .filter-group {
  flex-wrap: wrap;
  gap: var(--space-2);
  width: 100%;
}

.filter-event-select {
  width: 100%;
  min-height: 38px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.2;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.filter-event-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-field-focus-ring);
}

.filter-accordion-panel .filter-group {
  flex-shrink: 1;
}

.filter-scroll--secondary .filter-divider {
  width: 100%;
  height: 1px;
  margin: 0;
}

.filter-scroll--secondary .btn-clear-filters {
  align-self: flex-start;
}

.filter-chip--tag {
  font-size: var(--font-size-xs) !important;
  padding: 4px 10px !important;
  color: var(--color-text) !important;
  background: var(--color-surface) !important;
}

.filter-chip--tag:hover {
  background: var(--color-surface-hover) !important;
}

.filter-chip--tag.active {
  color: var(--color-state-active-text) !important;
  border-color: var(--color-state-active-border) !important;
  background: var(--color-state-active-bg) !important;
}

/* List view card variant */
.talks-list .talk-card .card-link-wrap {
  flex-direction: row;
}

.talks-list .card-thumbnail {
  width: 180px;
  aspect-ratio: auto;
  min-height: 100px;
  flex-shrink: 0;
}

.talks-list .card-body {
  gap: var(--space-1);
}

.talks-list .card-abstract {
  -webkit-line-clamp: 2;
}

/* In list view, hide tags/footer below the main link row */
.talks-list .card-tags-wrap,
.talks-list .card-footer {
  display: none;
}

.talks-list .paper-card .card-footer {
  display: flex;
}

/* ============================================================
   Badges
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.badge-keynote       { background: var(--badge-keynote-bg);    color: var(--badge-keynote-text); }
.badge-technical-talk{ background: var(--badge-technical-bg);  color: var(--badge-technical-text); }
.badge-tutorial      { background: var(--badge-tutorial-bg);   color: var(--badge-tutorial-text); }
.badge-lightning-talk{ background: var(--badge-lightning-bg);  color: var(--badge-lightning-text); }
.badge-quick-talk    { background: var(--badge-quick-bg);      color: var(--badge-quick-text); }
.badge-panel         { background: var(--badge-panel-bg);      color: var(--badge-panel-text); }
.badge-bof           { background: var(--badge-bof-bg);        color: var(--badge-bof-text); }
.badge-student-talk  { background: var(--badge-student-bg);    color: var(--badge-student-text); }
.badge-llvm-foundation { background: var(--badge-foundation-bg); color: var(--badge-foundation-text); }
.badge-poster        { background: var(--badge-poster-bg);     color: var(--badge-poster-text); }
.badge-workshop      { background: var(--badge-workshop-bg);   color: var(--badge-workshop-text); }
.badge-paper         { background: var(--badge-paper-bg);      color: var(--badge-paper-text); }
.badge-blog          { background: var(--badge-blog-bg);       color: var(--badge-blog-text); }
.badge-other         { background: var(--badge-other-bg);      color: var(--badge-other-text); }

.meeting-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

/* ============================================================
   Empty State
   ============================================================ */
.empty-state {
  text-align: center;
  padding: var(--space-20) var(--space-6);
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state h2 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: var(--font-size-base);
  max-width: 420px;
  margin: 0 auto var(--space-4);
  line-height: var(--line-height-base);
}

.empty-state-suggestions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.suggestion-chip {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.suggestion-chip:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.empty-state-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin: 0 auto var(--space-3);
}

.empty-action-btn {
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.empty-action-btn:hover {
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border-color: var(--color-border-focus);
}

/* ============================================================
   Loading State
   ============================================================ */
.loading-state {
  text-align: center;
  padding: var(--space-20) var(--space-6);
  color: var(--color-text-muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-4);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   Highlight (search match)
   ============================================================ */
mark {
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: 2px;
  padding: 0 2px;
}

/* ============================================================
   Talk Detail Page
   ============================================================ */
.talk-detail {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-20);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: all var(--transition-fast);
}

.back-btn:hover {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-surface-hover);
}

.talk-header {
  margin-bottom: var(--space-6);
}

.talk-header-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.talk-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.meeting-info-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}

/* Speakers */
.speakers-section {
  margin-bottom: var(--space-6);
}

.section-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.speakers-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.speaker-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.speaker-chip:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-surface-hover);
}

.speaker-name {
  font-weight: var(--font-weight-medium);
}

.speaker-affiliation {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.speaker-social {
  display: flex;
  gap: var(--space-1);
  margin-left: var(--space-1);
}

.speaker-social-link {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.speaker-social-link:hover {
  color: var(--color-accent);
}

/* Video Embed */
.video-section {
  margin-bottom: var(--space-6);
}

.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Abstract */
.abstract-section {
  margin-bottom: var(--space-6);
}

.abstract-body {
  font-size: var(--font-size-base);
  line-height: var(--line-height-loose);
  color: var(--color-text);
}

.abstract-body p + p {
  margin-top: var(--space-4);
}

.abstract-body ul, .abstract-body ol {
  margin: var(--space-3) 0 var(--space-3) var(--space-5);
}

.abstract-body ul { list-style: disc; }
.abstract-body ol { list-style: decimal; }

.abstract-body li {
  margin-bottom: var(--space-1);
}

.abstract-body.blog-content {
  line-height: 1.75;
}

.abstract-body.blog-content h1,
.abstract-body.blog-content h2,
.abstract-body.blog-content h3,
.abstract-body.blog-content h4,
.abstract-body.blog-content h5,
.abstract-body.blog-content h6 {
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  line-height: 1.25;
}

.abstract-body.blog-content h1 { font-size: clamp(1.55rem, 2.6vw, 2rem); }
.abstract-body.blog-content h2 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.abstract-body.blog-content h3 { font-size: clamp(1.2rem, 1.9vw, 1.4rem); }

.abstract-body.blog-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.abstract-body.blog-content img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
}

.abstract-body.blog-content figure,
.abstract-body.blog-content .hugo-figure {
  margin: var(--space-5) 0;
}

.abstract-body.blog-content figure img,
.abstract-body.blog-content .hugo-figure img {
  margin: 0;
}

.abstract-body.blog-content figure figcaption,
.abstract-body.blog-content .hugo-figure figcaption {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  text-align: center;
}

.abstract-body.blog-content .hugo-shortcode-link {
  margin: var(--space-4) 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border);
  background: var(--color-surface-subtle);
}

.abstract-body.blog-content details {
  margin: var(--space-4) 0;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-subtle);
}

.abstract-body.blog-content details > summary {
  cursor: pointer;
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
}

.abstract-body.blog-content details[open] > summary {
  margin-bottom: var(--space-2);
}

.abstract-body.blog-content .blog-heading-like {
  display: block;
  margin: var(--space-5) 0 var(--space-2);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: var(--font-weight-semi);
  line-height: 1.3;
}

.abstract-body.blog-content .blog-centered {
  text-align: center;
}

.abstract-body.blog-content .blog-centered img {
  margin-left: auto;
  margin-right: auto;
}

.abstract-body.blog-content pre {
  margin: var(--space-4) 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  overflow-x: auto;
}

.abstract-body.blog-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.abstract-body.blog-content .blog-inline-mono,
.abstract-body.blog-content kbd,
.abstract-body.blog-content samp {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.abstract-body.blog-content .blog-preformatted {
  white-space: pre-wrap;
}

.abstract-body.blog-content .blog-code-block,
.abstract-body.blog-content code.blog-code-block-inline,
.abstract-body.blog-content span.blog-code-block-inline,
.abstract-body.blog-content div.blog-code-block-inline {
  display: block;
  white-space: pre;
  margin: var(--space-4) 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  overflow-x: auto;
}

.abstract-body.blog-content .blog-code-block > code,
.abstract-body.blog-content pre > code.blog-code {
  display: block;
  white-space: pre;
}

.abstract-body.blog-content .blog-code-surface {
  background: var(--color-surface-subtle);
}

.abstract-body.blog-content p code,
.abstract-body.blog-content li code {
  padding: 0 0.35em;
  border-radius: 0.35em;
  background: var(--color-surface-subtle);
}

.abstract-body.blog-content kbd {
  padding: 0.08em 0.4em;
  border-radius: 0.35em;
  border: 1px solid var(--color-border);
  background: var(--color-surface-subtle);
}

.abstract-body.blog-content blockquote {
  margin: var(--space-4) 0;
  padding: var(--space-2) var(--space-4);
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border-radius: var(--radius-sm);
}

.abstract-body.blog-content hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-5) 0;
}

.abstract-body.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  display: block;
  overflow-x: auto;
}

.abstract-body.blog-content th,
.abstract-body.blog-content td {
  border: 1px solid var(--color-border);
  padding: 0.45rem 0.6rem;
  vertical-align: top;
}

/* Detail page tags */
.tags-section {
  margin-bottom: var(--space-6);
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.detail-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
}

.detail-tag:hover {
  background: var(--color-accent-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.detail-tag--meta {
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border-style: dashed;
}

.detail-tag--meta:hover {
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border-color: var(--color-border);
}

.detail-tag--button {
  appearance: none;
  font-family: inherit;
  cursor: pointer;
}

/* Links Bar */
.links-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.link-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-bg);
}

.link-btn svg {
  flex-shrink: 0;
}

.links-bar .report-issue-link {
  margin-left: auto;
}

/* Related Talks */
.related-section {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-8);
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
  padding-bottom: var(--space-16);
}

.related-section h2 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semi);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

/* ============================================================
   Meetings Grid Page
   ============================================================ */
.page-hero {
  padding: var(--space-10) var(--space-6) var(--space-6);
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.page-hero p {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
}

.meetings-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-16);
}

.meetings-year-group {
  margin-bottom: var(--space-8);
}

.year-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semi);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.meetings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.meeting-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: border-color var(--transition-base), background var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.meeting-card:hover {
  box-shadow: none;
  border-color: var(--color-border-strong);
  background: var(--color-surface);
}

.meeting-card--disabled {
  opacity: 0.52;
  filter: grayscale(0.2);
  cursor: not-allowed;
}

.meeting-card--disabled:hover {
  box-shadow: none;
  transform: none;
  border-color: var(--color-border);
}

.meeting-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.meeting-card-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semi);
  line-height: var(--line-height-snug);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.meeting-card-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.meeting-card-location {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.meeting-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.talk-count-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 3px var(--space-2);
  border-radius: var(--radius-sm);
}

.talk-count-badge--empty {
  color: var(--color-text-muted);
  background: var(--color-surface);
}

.view-talks-link {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}

.meeting-card:hover .view-talks-link {
  color: var(--color-accent);
}

.meeting-card-disabled-label {
  color: var(--color-text-muted);
}

.meeting-card.canceled {
  opacity: 0.5;
}

.canceled-badge {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: 2px var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* ============================================================
   Skip Link (accessibility)
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: calc(var(--z-modal) + 1);
  background: var(--color-bg);
  color: var(--color-accent);
  padding: var(--space-2) var(--space-4);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-2);
}

/* ============================================================
   Focus Styles — keyboard navigation
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Remove default focus ring for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* Enhanced focus for interactive elements */
.filter-chip:focus-visible,
.btn-clear-filters:focus-visible,
.work-scope-btn:focus-visible,
.view-btn:focus-visible,
.header-action-btn:focus-visible,
.mobile-filter-toggle:focus-visible,
.mobile-filter-close:focus-visible,
.mobile-filter-footer-btn:focus-visible,
.customization-toggle:focus-visible,
.customization-select:focus-visible,
.customization-reset:focus-visible,
.share-toggle:focus-visible,
.share-option:focus-visible,
.mobile-nav-toggle:focus-visible,
.mobile-nav-link:focus-visible,
.nav-dropdown-toggle:focus-visible,
.nav-dropdown-link:focus-visible,
.filter-event-select:focus-visible,
.card-tag:focus-visible,
.suggestion-chip:focus-visible,
.empty-action-btn:focus-visible,
.back-btn:focus-visible,
.link-btn:focus-visible,
.card-link-btn:focus-visible,
.detail-tag:focus-visible,
.speaker-social-link:focus-visible,
.person-variant-pill:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.card-link-wrap:focus-visible,
.meeting-card:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-lg);
}

.search-input:focus-visible {
  outline: none; /* handled by box-shadow on :focus */
}

/* ============================================================
   Utilities
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden {
  display: none !important;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1180px) {
  .search-hero {
    padding: var(--space-4) var(--space-4) var(--space-2);
    padding-left: var(--space-4);
  }

  body.filter-collapsed .search-hero {
    padding-left: var(--space-4);
  }

  .search-hero-shell {
    padding: var(--space-4);
    max-width: var(--max-width);
  }

  .hub-layout {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-2) var(--space-4) var(--space-12);
    padding-left: var(--space-4);
    display: block;
  }

  .filter-section {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: min(88vw, 380px);
    max-height: none;
    border-radius: 0;
    border-top: none;
    border-left: none;
    border-bottom: none;
    padding: var(--space-3);
    transform: translateX(-104%);
    transition: transform var(--transition-base);
    z-index: var(--z-modal);
    overflow-y: auto;
  }

  body.mobile-filters-open {
    overflow: hidden;
  }

  body.mobile-filters-open .filter-section {
    transform: translateX(0);
  }

  .mobile-filter-scrim {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: calc(var(--z-modal) - 1);
    background: var(--color-overlay);
    display: block;
  }

  .mobile-filter-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    min-height: 40px;
    line-height: 40px;
    padding-top: 0;
    padding-bottom: 0;
  }

  .mobile-filter-close {
    margin-left: auto;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  }

  .mobile-filter-close:hover {
    color: var(--color-text);
    border-color: var(--color-border-focus);
    background: var(--color-surface-hover);
  }

  .mobile-filter-footer {
    position: sticky;
    bottom: 0;
    padding-top: var(--space-3);
    margin-top: var(--space-2);
    display: flex;
    gap: var(--space-2);
    background: var(--color-surface);
  }

  .mobile-filter-footer-btn {
    flex: 1;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-primary-btn-border);
    background: var(--color-primary-btn-bg);
    color: var(--color-primary-btn-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  }

  .mobile-filter-footer-btn:hover {
    color: var(--color-primary-btn-hover-text);
    background: var(--color-primary-btn-hover-bg);
    border-color: var(--color-primary-btn-hover-border);
  }

  .mobile-filter-footer-btn--secondary {
    border-color: var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
  }

  .filter-collapse-btn {
    display: none;
  }

  body.filter-collapsed .hub-layout {
    padding-left: var(--space-4);
  }

  .feed-column,
  body.filter-collapsed .feed-column {
    max-width: none;
  }

  body.filter-collapsed .filter-section {
    width: auto;
    padding: var(--space-3);
  }

  body.filter-collapsed .filter-sidebar-head {
    margin-bottom: var(--space-3);
    justify-content: flex-start;
  }

  body.filter-collapsed .filter-sidebar-head h2 {
    display: block;
  }

  body.filter-collapsed #clear-filters:not(.hidden) {
    display: inline-flex;
  }

  body.filter-collapsed .filter-sidebar-body {
    display: flex;
  }

  .filter-sidebar-body {
    overflow: visible;
    padding-right: 0;
  }

  .talks-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

  .results-bar {
    position: static;
    top: auto;
    backdrop-filter: none;
  }
}

@media (max-width: 1180px) {
  .site-header .global-search-form {
    display: none;
  }
}

@media (max-width: 1024px) {

  .search-hero-shell {
    padding: var(--space-4);
  }

  .talks-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-2xl: 26px;
    --font-size-3xl: 30px;
    --header-height: 126px;
  }

  .site-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas:
      "logo share menu"
      "search search search";
    align-items: center;
    padding: var(--space-3) var(--space-3);
    column-gap: var(--space-2);
    row-gap: var(--space-3);
  }

  .site-logo {
    grid-area: logo;
    min-width: 0;
    flex: 1 1 auto;
    font-size: var(--font-size-lg);
  }

  .site-logo span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: var(--font-size-base);
  }

  .site-logo-img {
    width: 30px;
    height: 30px;
  }

  .site-nav {
    display: none;
  }

  .mobile-nav-menu {
    grid-area: menu;
    display: inline-flex;
    align-items: center;
    justify-self: end;
    margin-left: 0 !important;
  }

  .header-right {
    grid-area: share;
    flex: 0 0 auto;
    min-width: auto;
    margin-left: 0;
    gap: 6px;
    justify-self: end;
  }

  .header-right .customization-menu {
    display: none;
  }

  .site-header .global-search-form {
    grid-area: search;
    display: inline-flex;
    flex: 1 0 auto;
    width: 100%;
    min-width: 0;
    max-width: none;
    margin: 0 calc(var(--space-3) * -1);
    width: calc(100% + (var(--space-3) * 2));
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

  .search-box.global-search-form {
    display: grid;
    padding: 8px;
  }

  .global-search-input {
    height: 44px;
    font-size: 16px;
    padding: 0 14px;
  }

  .search-input {
    font-size: 16px;
  }

  .search-box.global-search-form .global-search-main-row {
    min-height: 50px;
  }

  .search-box.global-search-form .global-search-input {
    height: 48px;
    padding: 0 38px 0 14px;
  }

  .global-search-submit {
    width: 44px;
    height: 44px;
  }

  .share-toggle {
    min-width: auto;
    width: auto;
    height: 44px;
    min-height: 44px;
    padding: 0 12px;
    font-size: var(--font-size-sm);
    gap: 8px;
  }

  .share-toggle::before {
    width: 15px;
    height: 15px;
  }

  .mobile-nav-toggle {
    width: 44px;
    min-width: 44px;
    height: 44px;
    min-height: 44px;
    padding: 0;
    font-size: 0;
    justify-content: center;
  }

  .mobile-nav-toggle-icon {
    width: 20px;
    height: 20px;
  }

  .mobile-nav-toggle > span:not(.mobile-nav-toggle-icon) {
    display: none;
  }

  .search-icon {
    display: none;
  }

  .search-input {
    padding-left: 14px;
  }

  .search-box.global-search-form .search-clear {
    right: 8px;
  }

  .global-search-tools-row {
    align-items: stretch;
    gap: 6px;
  }

  .global-search-tools-left {
    width: 100%;
  }

  .global-search-scope-switch {
    width: 100%;
  }

  .global-search-scope-btn {
    flex: 1;
    min-width: 0;
  }

  .search-box.global-search-form .global-search-advanced-toggle {
    width: 100%;
    min-width: 0;
    justify-content: center;
  }

  .global-search-form:not(.search-box) .global-search-advanced-toggle {
    width: auto;
    min-width: 84px;
    padding: 0 6px;
    font-size: 10px;
    gap: 4px;
  }

  .mobile-nav-setting {
    padding: 0;
  }

  .global-search-advanced-panel {
    left: 0;
    right: auto;
    width: min(680px, calc(100vw - 16px));
  }

  .search-box.global-search-form .global-search-advanced-panel {
    width: 100%;
  }

  .global-search-advanced-grid {
    grid-template-columns: 1fr;
  }

  .global-search-advanced-field--year-range {
    grid-column: auto;
  }

  .search-hero {
    padding: var(--space-3) var(--space-2) var(--space-2);
  }

  .search-hero-shell {
    padding: var(--space-3);
  }

  .hub-layout {
    padding: var(--space-2) var(--space-2) var(--space-12);
    padding-left: var(--space-2);
  }

  body.filter-collapsed .hub-layout {
    padding-left: var(--space-2);
  }

  .search-hero h1 {
    font-size: var(--font-size-xl);
  }

  .filter-tags-row {
    width: 100%;
    padding: 0;
  }

  .filter-tags-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .filter-scroll--secondary {
    padding: var(--space-2) 0 0;
  }

  .results-bar {
    padding: var(--space-2);
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
  }

  .results-meta {
    order: 2;
    width: 100%;
    gap: 4px 8px;
    align-items: center;
  }

  .results-controls {
    order: 1;
    width: 100%;
    justify-content: flex-start;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }

  .work-scope-toggle {
    order: 1;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  #work-time-select {
    order: 2;
  }

  #work-custom-range {
    order: 3;
    width: 100%;
  }

  #work-advanced-toggle {
    order: 4;
    width: 36px;
    min-width: 36px;
    max-width: 36px;
    height: 36px;
    padding: 0;
  }

  #work-sort-select {
    order: 5;
  }

  .view-toggle {
    order: 6;
  }

  .results-sort-label {
    display: none;
  }

  .results-sort-select {
    height: 36px;
    width: auto;
    min-width: 0;
    max-width: min(56vw, 220px);
    padding-left: 10px;
    padding-right: 30px;
    font-size: var(--font-size-sm);
  }

  .people-affiliation-select {
    width: 100%;
    max-width: 100%;
  }

  .people-topic-select {
    width: 100%;
    max-width: 100%;
  }

  .work-year-input {
    height: 36px;
    min-width: 82px;
    width: min(32vw, 116px);
    max-width: 116px;
  }

  .view-btn {
    width: 36px;
    height: 36px;
    min-height: 36px;
  }

  .work-advanced-panel {
    padding: var(--space-2);
  }

  .work-advanced-grid {
    grid-template-columns: 1fr;
  }

  .work-advanced-actions {
    width: 100%;
  }

  .work-advanced-btn {
    height: 36px;
  }

  .mobile-filter-toggle {
    height: 36px;
    min-height: 36px;
    line-height: 36px;
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }

  .results-context {
    display: block;
    width: 100%;
    margin-left: 0;
    line-height: 1.35;
  }

  .active-filters {
    gap: 6px;
    padding-top: var(--space-2);
  }

  .filter-chip,
  .view-btn,
  .mobile-filter-toggle,
  .mobile-nav-toggle,
  .header-action-btn,
  .customization-toggle,
  .customization-select,
  .customization-reset,
  .mobile-filter-footer-btn,
  .empty-action-btn {
    min-height: 40px;
  }

  .talks-container {
    padding: 0 0 var(--space-12);
  }

  .talks-grid {
    grid-template-columns: 1fr;
  }

  .talks-list .card-thumbnail {
    width: 120px;
  }

  .talk-detail {
    padding: var(--space-6) var(--space-4) var(--space-12);
  }

  .talk-title {
    font-size: var(--font-size-xl);
  }

  .meetings-container {
    padding: 0 var(--space-4) var(--space-12);
  }

  .meetings-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: var(--space-8) var(--space-4) var(--space-6);
  }

  .related-section {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .mobile-nav-toggle {
    padding: 0;
  }

  .mobile-nav-panel {
    width: min(300px, calc(100vw - 12px));
    min-width: min(240px, calc(100vw - 12px));
  }

  .mobile-nav-link {
    min-height: 40px;
    padding: 0 var(--space-2);
  }

  .share-panel {
    width: min(78vw, 220px);
  }

  .site-logo span {
    max-width: 52vw;
    font-size: var(--font-size-base);
  }

  .header-action-btn {
    padding: 0 var(--space-2);
    font-size: 10px;
  }

  .share-toggle {
    min-width: auto;
    width: auto;
    padding: 0 10px;
    font-size: var(--font-size-xs);
    gap: 6px;
  }

  .search-hero h1 {
    font-size: var(--font-size-lg);
  }

  .search-hero-title-row {
    align-items: flex-start;
    gap: 4px;
  }

  .search-hero-title-aside {
    width: 100%;
    font-size: var(--font-size-sm);
  }

  .search-input {
    height: 46px;
    font-size: 16px;
  }

  .talks-list .card-thumbnail {
    display: none;
  }

  .talk-title {
    font-size: var(--font-size-lg);
  }
}

@media (hover: none) and (pointer: coarse) {
  .global-search-input,
  .search-input {
    font-size: 16px !important;
  }
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.talks-grid .talk-card,
.talks-list .talk-card {
  animation: none;
}

/* Stagger first 12 cards */
.talk-card:nth-child(1),
.talk-card:nth-child(2),
.talk-card:nth-child(3),
.talk-card:nth-child(4),
.talk-card:nth-child(5),
.talk-card:nth-child(6),
.talk-card:nth-child(7),
.talk-card:nth-child(8),
.talk-card:nth-child(9),
.talk-card:nth-child(10),
.talk-card:nth-child(11),
.talk-card:nth-child(12) { animation-delay: 0ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   Clickable Speaker Names
   ============================================================ */

/* .card-speakers lives outside .card-link-wrap so speaker buttons are interactive.
   Give it the same horizontal padding as .card-body so it lines up. */
.talk-card > .card-speakers {
  padding: 0 var(--space-3) var(--space-2);
  white-space: normal;    /* allow wrapping for multiple speakers */
  overflow: visible;
  text-overflow: unset;
}

/* Paper cards keep a compact author line; full authors are shown on paper detail page. */
.paper-card > .card-speakers.paper-authors {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}


/* On talk cards — inline button inside .card-speakers */
.speaker-btn {
  display: inline;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  color: var(--color-text-muted);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  line-height: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.speaker-btn:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.speaker-btn-sep {
  color: var(--color-text-muted);
  pointer-events: none;
}

/* On talk detail page — speaker name inside .speaker-chip becomes a link */
.speaker-name-link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.speaker-name-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* On related-talk cards — plain links styled like muted text */
.card-speaker-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.card-speaker-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ============================================================
   Site Logo Image
   ============================================================ */
.site-logo-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
  /* Crisp rendering at small size */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* Slightly larger on wider screens */
@media (min-width: 640px) {
  .site-logo-img {
    width: 32px;
    height: 32px;
  }
}

/* ============================================================
   About Modal
   ============================================================ */

/* Nav button — same look as .nav-link but as <button> */
.nav-btn-about {
  /* inherits .nav-link styles; reset button defaults */
  display: inline-flex;
  align-items: center;
}

/* Full-screen overlay */
.about-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--color-overlay);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--header-height) var(--space-4) var(--space-4);
  overflow-y: auto;
  animation: modal-fade-in var(--transition-base) ease;
}

.about-modal-overlay[hidden] {
  display: none;
}

@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Content panel */
.about-modal-panel {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: var(--max-width-narrow);
  padding: var(--space-10) var(--space-8) var(--space-12);
  animation: modal-slide-in var(--transition-base) ease;
}

@keyframes modal-slide-in {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Close button */
.about-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: transparent;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.about-modal-close:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.about-modal-close:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Inner content — two sections stacked */
.about-modal-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.info-section {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.info-section-icon {
  flex-shrink: 0;
  width: 48px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 2px;
}

.info-section-icon img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.info-section-icon--howto {
  color: var(--color-accent);
}

.info-section-body {
  flex: 1;
  min-width: 0;
}

.info-section-body h2 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semi);
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.info-section-body p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-loose);
  margin-bottom: var(--space-3);
}

.info-section-body p:last-child {
  margin-bottom: 0;
}

.info-section-body p strong {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.info-section-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.info-section-body a:hover {
  color: var(--color-accent-hover);
}

/* How-to list */
.howto-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.howto-list li {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-base);
  padding-left: var(--space-5);
  position: relative;
}

.howto-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
}

.howto-list li strong {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.howto-list li code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--color-accent);
}

.howto-list li kbd {
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--color-text-muted);
}

/* Divider between the two sections */
.info-section + .info-section {
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
}

/* Stack icon above body on very small screens */
@media (max-width: 480px) {
  .info-section {
    flex-direction: column;
    gap: var(--space-3);
  }

  .info-section-icon {
    width: auto;
  }

  .info-section-icon img {
    width: 36px;
    height: 36px;
  }

  .about-modal-panel {
    padding: var(--space-8) var(--space-5) var(--space-10);
    border-radius: var(--radius-lg);
  }
}