/* ============================================
   Color Index Pigment Database — Styles
   Art-directed: warm, earthy, watercolor paper
   ============================================ */

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

:root {
  /* Palette – Light */
  --bg: #FAF8F5;
  --bg-secondary: #F5F2ED;
  --surface: #FFFFFF;
  --surface-hover: #FFFDF9;
  --border: #E5DFD6;
  --border-strong: #D1C9BC;
  --text: #2C2418;
  --text-secondary: #6B5D4F;
  --text-muted: #9A8E80;
  --accent: #1B3A8C;
  --accent-hover: #15307A;
  --accent-light: #E8EDF7;
  --secondary: #A0522D;
  --secondary-light: #F5EBE4;

  /* Semantic */
  --tox-a: #3D7A3D;
  --tox-b: #B8860B;
  --tox-c: #C0522D;
  --tox-d: #A02020;
  --lf-excellent: #2D6A2D;
  --lf-good: #4A7C30;
  --lf-fair: #B8860B;
  --lf-poor: #C0522D;
  --lf-vpoor: #8B0000;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(44, 36, 24, 0.06), 0 1px 2px rgba(44, 36, 24, 0.04);
  --shadow-md: 0 4px 12px rgba(44, 36, 24, 0.08), 0 2px 4px rgba(44, 36, 24, 0.04);
  --shadow-lg: 0 8px 24px rgba(44, 36, 24, 0.1), 0 4px 8px rgba(44, 36, 24, 0.06);
  --shadow-modal: 0 20px 60px rgba(44, 36, 24, 0.2), 0 8px 20px rgba(44, 36, 24, 0.1);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --duration: 200ms;

  /* Typography */
  --font-body: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Zodiak', Georgia, 'Times New Roman', serif;

  /* Chip colors */
  --chip-yellow: #F5D623;
  --chip-orange: #E88320;
  --chip-red: #D42B2B;
  --chip-violet: #7B3FA0;
  --chip-blue: #1B3A8C;
  --chip-green: #2D7A3D;
  --chip-brown: #7B4A2B;
  --chip-black: #2C2418;
  --chip-white: #E5DFD6;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --bg: #1A1917;
  --bg-secondary: #222120;
  --surface: #2A2826;
  --surface-hover: #332F2C;
  --border: #3D3A35;
  --border-strong: #504C46;
  --text: #E8E4DD;
  --text-secondary: #B5ADA2;
  --text-muted: #7A7468;
  --accent: #6B8FD4;
  --accent-hover: #8BABF0;
  --accent-light: #1E2A42;
  --secondary: #D4845A;
  --secondary-light: #362A22;

  --tox-a: #5DAA5D;
  --tox-b: #D4A017;
  --tox-c: #E07040;
  --tox-d: #D44040;
  --lf-excellent: #5DAA5D;
  --lf-good: #7AAF50;
  --lf-fair: #D4A017;
  --lf-poor: #E07040;
  --lf-vpoor: #D44040;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.14);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2);
  --shadow-modal: 0 20px 60px rgba(0, 0, 0, 0.5), 0 8px 20px rgba(0, 0, 0, 0.3);

  --chip-yellow: #C4A81C;
  --chip-orange: #C06D18;
  --chip-red: #B02525;
  --chip-violet: #6A35A0;
  --chip-blue: #4A6AB0;
  --chip-green: #2D7A3D;
  --chip-brown: #6B3F25;
  --chip-black: #8A857D;
  --chip-white: #504C46;
}

/* --- Base --- */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}
a:hover { color: var(--accent-hover); }

/* --- Header --- */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--accent);
}

.header-title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 3.5vw, 1.35rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}

.header-subtitle {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.header-subtitle a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 2px;
}
.header-subtitle a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.header-right {
  flex-shrink: 0;
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease);
}
.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text);
  border-color: var(--border-strong);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* --- Stats Bar --- */
.stats-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.stats-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.stat-item strong {
  color: var(--text);
  font-weight: 600;
}

.stat-divider {
  color: var(--text-muted);
  user-select: none;
}

/* --- Filters --- */
.filters-section {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.filters-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 16px;
}

/* Search */
.search-wrap {
  position: relative;
  margin-bottom: 16px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 12px 44px 12px 42px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.925rem;
  transition: all var(--duration) var(--ease);
  outline: none;
}
.search-input::placeholder {
  color: var(--text-muted);
}
.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(27, 58, 140, 0.1);
}
[data-theme="dark"] .search-input:focus {
  box-shadow: 0 0 0 3px rgba(107, 143, 212, 0.15);
}

.search-clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease);
}
.search-clear:hover {
  background: var(--bg-secondary);
  color: var(--text);
}
.search-clear svg {
  width: 16px;
  height: 16px;
}

/* Filter Groups */
.filter-groups {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filter-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.filter-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 100px;
  padding-top: 7px;
  flex-shrink: 0;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  background: var(--bg);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  user-select: none;
}
.chip:hover {
  border-color: var(--border-strong);
  background: var(--bg-secondary);
  color: var(--text);
}
.chip.active {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
}

/* Color chip indicators */
.chip[data-family]::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.chip-yellow::before { background: var(--chip-yellow); }
.chip-orange::before { background: var(--chip-orange); }
.chip-red::before { background: var(--chip-red); }
.chip-violet::before { background: var(--chip-violet); }
.chip-blue::before { background: var(--chip-blue); }
.chip-green::before { background: var(--chip-green); }
.chip-brown::before { background: var(--chip-brown); }
.chip-black::before { background: var(--chip-black); }
.chip-white::before { background: var(--chip-white); border: 1px solid var(--border); }

/* Clear All */
.clear-all-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid var(--secondary);
  border-radius: 100px;
  background: transparent;
  color: var(--secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  align-self: flex-start;
}
.clear-all-btn:hover {
  background: var(--secondary-light);
}

/* --- Results --- */
.results-section {
  padding: 24px 0 48px;
}

.results-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.pigment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

/* --- Card --- */
.pigment-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pigment-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.pigment-card:active {
  transform: translateY(0);
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.card-swatch {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid var(--border);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.card-title-group {
  flex: 1;
  min-width: 0;
}

.card-ci-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.card-common-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.3;
  margin-top: 1px;
}

.card-family-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 100px;
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 2px;
}

.card-chemical {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-lf {
  background: rgba(45, 106, 45, 0.1);
  color: var(--lf-excellent);
}
.badge-lf-II { background: rgba(74, 124, 48, 0.1); color: var(--lf-good); }
.badge-lf-III { background: rgba(184, 134, 11, 0.1); color: var(--lf-fair); }
.badge-lf-IV { background: rgba(192, 82, 45, 0.1); color: var(--lf-poor); }
.badge-lf-V { background: rgba(139, 0, 0, 0.1); color: var(--lf-vpoor); }

.badge-opacity {
  background: var(--accent-light);
  color: var(--accent);
}

.badge-tox {
  background: rgba(61, 122, 61, 0.1);
  color: var(--tox-a);
}
.badge-tox-B { background: rgba(184, 134, 11, 0.1); color: var(--tox-b); }
.badge-tox-C { background: rgba(192, 82, 45, 0.1); color: var(--tox-c); }
.badge-tox-D { background: rgba(160, 32, 32, 0.1); color: var(--tox-d); }

.card-alt-names {
  font-size: 0.725rem;
  color: var(--text-muted);
  line-height: 1.35;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Family badge colors */
.family-yellow { background: rgba(245, 214, 35, 0.15); color: #9A7B00; }
.family-orange { background: rgba(232, 131, 32, 0.12); color: #B55E10; }
.family-red { background: rgba(212, 43, 43, 0.1); color: #B02525; }
.family-violet { background: rgba(123, 63, 160, 0.1); color: #6A35A0; }
.family-blue { background: rgba(27, 58, 140, 0.1); color: var(--accent); }
.family-green { background: rgba(45, 122, 61, 0.1); color: #2D6A2D; }
.family-brown { background: rgba(123, 74, 43, 0.12); color: #7B4A2B; }
.family-black { background: rgba(44, 36, 24, 0.1); color: var(--text-secondary); }
.family-white { background: var(--bg-secondary); color: var(--text-secondary); border: 1px solid var(--border); }

[data-theme="dark"] .family-yellow { background: rgba(196, 168, 28, 0.15); color: #D4B820; }
[data-theme="dark"] .family-orange { background: rgba(192, 109, 24, 0.15); color: #D4845A; }
[data-theme="dark"] .family-red { background: rgba(176, 37, 37, 0.15); color: #D45050; }
[data-theme="dark"] .family-violet { background: rgba(106, 53, 160, 0.15); color: #A06AD0; }
[data-theme="dark"] .family-blue { background: rgba(74, 106, 176, 0.15); color: #6B8FD4; }
[data-theme="dark"] .family-green { background: rgba(45, 122, 61, 0.15); color: #5DAA5D; }
[data-theme="dark"] .family-brown { background: rgba(107, 63, 37, 0.15); color: #C08060; }
[data-theme="dark"] .family-black { background: rgba(138, 133, 125, 0.12); color: #B5ADA2; }
[data-theme="dark"] .family-white { background: rgba(80, 76, 70, 0.15); color: #B5ADA2; }

/* --- No Results --- */
.no-results {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.no-results-text {
  font-size: 1rem;
  color: var(--text-secondary);
}

.no-results-clear {
  padding: 8px 20px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}
.no-results-clear:hover {
  background: var(--accent-light);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 36, 24, 0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.25s var(--ease);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.modal-overlay.visible {
  opacity: 1;
}

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.65);
}

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-modal);
  position: relative;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s var(--ease);
}
.modal-overlay.visible .modal-content {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease);
  z-index: 1;
}
.modal-close:hover {
  background: var(--bg-secondary);
  color: var(--text);
  border-color: var(--border-strong);
}
.modal-close svg {
  width: 16px;
  height: 16px;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 24px 0;
}

.modal-swatch {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 3px solid var(--border);
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
}

.modal-ci-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
}

.modal-common-name {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.modal-body {
  padding: 20px 24px 24px;
}

.modal-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.modal-section {
  margin-bottom: 14px;
}

.modal-section h3 {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.modal-section p {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.55;
}

.modal-properties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.modal-prop {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.modal-prop-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.modal-prop-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.modal-footer {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.modal-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
}
.modal-link:hover {
  color: var(--accent-hover);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .header-inner {
    padding: 12px 16px;
  }

  .header-title {
    font-size: 1.1rem;
  }

  .header-subtitle {
    display: none;
  }

  .stats-inner {
    padding: 8px 16px;
  }

  .filters-inner {
    padding: 16px 16px 12px;
  }

  .filter-group {
    flex-direction: column;
    gap: 6px;
  }

  .filter-label {
    min-width: unset;
    padding-top: 0;
  }

  .results-inner {
    padding: 0 16px;
  }

  .pigment-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .modal-overlay {
    padding: 12px;
    align-items: flex-end;
  }

  .modal-content {
    max-height: 90vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  }

  .modal-header {
    padding: 20px 20px 0;
  }

  .modal-body {
    padding: 16px 20px 20px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .pigment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .pigment-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1300px) {
  .pigment-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.chip:focus-visible,
.theme-toggle:focus-visible,
.pigment-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Card animation for filter changes */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pigment-card {
  animation: cardFadeIn 0.3s var(--ease) both;
}