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

:root {
  /* Primary */
  --evo-ink: #07001a;
  --off-white: #f8f7f6;
  --card-white: #ffffff;
  /* Accent */
  --evo-red: #ff381a;
  /* Semantic */
  --profit-green: #44b200;
  --profit-green-dark: #56e000;
  --loss-pink: #ee0053;
  --info-blue: #0972f1;
  --medium-confidence: #f39600;
  /* Text Hierarchy */
  --text-primary: #07001a;
  --text-primary-5: rgba(0, 6, 20, 0.05);
  --subtext: #68616b;
  --subsubtext: #b3afb6;
  --subsubsubtext: #e2e2e2;
  --darker-subtext: #635d67;
  /* Surfaces */
  --close-btn: #efeeee;
  --card-border-subtle: rgba(0, 0, 0, 0.04);
  --card-border-medium: rgba(0, 0, 0, 0.05);
  /* Shadows */
  --ui-card-shadow: rgba(0, 0, 0, 0.05) 0px 3px 3.5px 0px;
  --playing-card-shadow: rgba(0, 0, 0, 0.25) 0px 1.5px 1px 0px, rgba(0, 0, 0, 0.23) 0px -0.5px 1px 0px;
  /* Radii */
  --radius-sm: 12px;
  --radius-md: 24px;
  --radius-lg: 32px;
  /* Spacing */
  --sp-0: 0px;
  --sp-2: 2px;
  --sp-4: 4px;
  --sp-6: 6px;
  --sp-8: 8px;
  --sp-12: 12px;
  --sp-16: 16px;
  --sp-24: 24px;
  --sp-32: 32px;
  --sp-48: 48px;
  /* Font */
  --font: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  /* Dynamic theme values */
  --page-bg: var(--off-white);
  --card-bg: var(--card-white);
  --text-bg: var(--evo-ink);
  --card-elevation: var(--ui-card-shadow);
  --card-border: none;
  --nav-bg: rgba(248, 247, 246, 0.85);
  --nav-border: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --page-bg: #18171c;
  --card-bg: #23222a;
  --text-bg: #fafafa;
  --card-elevation: none;
  --card-border: 1px solid rgba(250, 250, 250, 0.05);
  --nav-bg: rgba(24, 23, 28, 0.85);
  --nav-border: rgba(250, 250, 250, 0.08);
  --subsubsubtext: #3a3a3a;
  --text-primary-5: rgba(250, 250, 250, 0.1);
  --card-border-subtle: rgba(250, 250, 250, 0.05);
  --card-border-medium: rgba(255, 255, 255, 0.15);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  color: var(--text-bg);
  background: var(--page-bg);
  line-height: 1.5;
  font-weight: 700;
  transition: background 0.3s, color 0.3s;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--nav-border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left {
  display: flex;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  text-decoration: none;
  color: var(--text-bg);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-logo-icon {
  flex-shrink: 0;
}

.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--subsubsubtext);
  margin: 0 var(--sp-16);
  transform: rotate(15deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.nav-link {
  text-decoration: none;
  color: var(--subtext);
  font-size: 14px;
  font-weight: 700;
  padding: var(--sp-6) var(--sp-12);
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav-link:hover {
  color: var(--text-bg);
  background: var(--text-primary-5);
}

.nav-link.active {
  color: var(--text-bg);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--text-primary-5);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-bg);
  transition: transform 0.15s;
}

.theme-toggle:hover {
  transform: scale(1.02);
}

.theme-toggle:active {
  transform: scale(0.98);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  font-family: var(--font);
  font-weight: 900;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.btn-primary {
  background: var(--evo-ink);
  color: var(--card-white);
  font-size: 20px;
  padding: var(--sp-12) var(--sp-24);
  border-radius: var(--radius-md);
  height: 56px;
}

[data-theme="dark"] .btn-primary {
  background: var(--card-white);
  color: var(--evo-ink);
}

.btn-primary:hover {
  transform: scale(1.02);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-bg);
  font-size: 20px;
  padding: var(--sp-12) var(--sp-24);
  border-radius: var(--radius-md);
  height: 56px;
  box-shadow: var(--card-elevation);
  border: var(--card-border);
}

.btn-secondary:hover {
  transform: scale(1.02);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-accent {
  background: var(--evo-red);
  color: var(--card-white);
  font-size: 20px;
  padding: var(--sp-12) var(--sp-24);
  border-radius: var(--radius-md);
  height: 56px;
}

.btn-accent:hover {
  transform: scale(1.02);
}

.btn-accent:active {
  transform: scale(0.98);
}

.btn-sm {
  height: 36px;
  padding: var(--sp-6) var(--sp-16);
  font-size: 14px;
  border-radius: var(--radius-sm);
}

.btn-full {
  width: 100%;
  max-width: 360px;
}

.btn-ghost {
  background: none;
  border: none;
  color: var(--text-bg);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: normal;
  padding: var(--sp-12) var(--sp-24);
  cursor: pointer;
  transition: transform 0.15s;
}

.btn-ghost:hover {
  transform: scale(1.02);
}

.btn-ghost:active {
  transform: scale(0.98);
}

.btn-small-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: var(--card-bg);
  color: var(--text-bg);
  border: none;
  padding: var(--sp-6) var(--sp-12);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-elevation);
  cursor: pointer;
  transition: opacity 0.15s;
}

[data-theme="dark"] .btn-small-inline {
  border: var(--card-border);
}

.btn-small-inline:hover {
  transform: scale(1.02);
}

.btn-small-inline:active {
  transform: scale(0.98);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: var(--close-btn);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-bg);
  transition: opacity 0.15s;
}

[data-theme="dark"] .btn-icon {
  background: var(--card-bg);
  border: var(--card-border);
}

.btn-icon:hover {
  transform: scale(1.02);
}

.btn-icon:active {
  transform: scale(0.98);
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px var(--sp-24) 64px;
  border-bottom: 1px solid var(--nav-border);
}

.hero-title {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--sp-16);
}

.hero-subtitle {
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
  line-height: 1.5;
  margin-bottom: var(--sp-32);
}

.hero-actions {
  display: flex;
  gap: var(--sp-12);
  justify-content: center;
}

/* Main */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
}

/* Sections */
.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--nav-border);
}

.section:last-child {
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--sp-8);
}

.section-number {
  font-size: 12px;
  font-weight: 700;
  color: var(--subsubtext);
  font-family: var(--font-mono);
}

.section-divider {
  font-size: 12px;
  color: var(--subsubsubtext);
}

.section-label {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--subsubtext);
}

.section-title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
  margin-bottom: 40px;
}

/* Color Palette */
.color-group {
  margin-bottom: var(--sp-32);
}

.color-group:last-child {
  margin-bottom: 0;
}

.color-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
  margin-bottom: var(--sp-12);
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-12);
}

.color-grid-1 {
  grid-template-columns: 1fr;
  max-width: 380px;
}

.color-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.color-grid-5 {
  grid-template-columns: repeat(5, 1fr);
}

.color-card {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--card-elevation);
  border: var(--card-border);
  transition: box-shadow 0.3s, border 0.3s;
}

.color-swatch {
  height: 72px;
  width: 100%;
}

.color-info {
  padding: var(--sp-8) var(--sp-12);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.color-name {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.color-hex {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--subtext);
}

.color-role {
  font-size: 10px;
  font-weight: 800;
  color: var(--subsubtext);
}

/* Typography */
.type-specimens {
  display: flex;
  flex-direction: column;
}

.type-specimen {
  padding: var(--sp-16) 0;
  border-bottom: 1px solid var(--nav-border);
}

.type-specimen:last-child {
  border-bottom: none;
}

.type-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-top: var(--sp-6);
  font-size: 12px;
  color: var(--subsubtext);
  font-family: var(--font-mono);
  font-weight: 700;
}

.type-meta .dot {
  color: var(--subsubsubtext);
}

.type-hero {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.type-h2 {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.type-h3 {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.type-bigger-body-bold {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.type-thinner-bigger-body {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: normal;
  line-height: 1.5;
}

.type-body-bold {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: normal;
  line-height: 1.5;
  color: var(--subtext);
}

.type-subtext-bold {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.type-subtext {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: normal;
  line-height: 1.5;
  color: var(--subtext);
}

.type-subsubtext {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: normal;
  line-height: 1.5;
  background: var(--evo-ink);
  color: var(--card-white);
  padding: var(--sp-2) var(--sp-8);
  border-radius: var(--sp-4);
  display: inline-block;
}

[data-theme="dark"] .type-subsubtext {
  background: #fafafa;
  color: var(--evo-ink);
}

/* Button Showcase */
.button-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-24);
  align-items: flex-start;
}

.button-item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  align-items: center;
}

.button-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--subsubtext);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-12);
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: var(--sp-24);
  box-shadow: var(--card-elevation);
  border: var(--card-border);
  transition: box-shadow 0.3s, border 0.3s, transform 0.15s;
}

.card:hover {
  transform: scale(1.02);
}

.card:active {
  transform: scale(0.98);
}

.card-colored {
  border: 3px solid rgba(0, 0, 0, 0.05) !important;
  box-shadow: none !important;
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-bottom: var(--sp-12);
}

.card-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--sp-4);
}

.card-badge {
  font-size: 10px;
  font-weight: 800;
  color: var(--subsubtext);
}

.card-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-6);
}

.card-desc {
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
  line-height: 1.5;
  margin-bottom: var(--sp-12);
}

.card-nested {
  background: var(--card-bg);
  border: 1px solid var(--card-border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--sp-12);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  box-shadow: var(--card-elevation);
}

.card-nested-row {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.card-nested-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
  flex-shrink: 0;
}

.card-nested-dots {
  flex: 1;
  border-bottom: 2px dotted var(--subsubsubtext);
  min-width: 20px;
  margin: 0 var(--sp-4);
  align-self: flex-end;
  margin-bottom: 4px;
}

.card-nested-value {
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.type-profit {
  color: var(--profit-green);
}

[data-theme="dark"] .type-profit {
  color: var(--profit-green-dark);
}

.type-loss {
  color: var(--loss-pink);
}

/* Filter Pills */
.pill-showcase {
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}

.pill-row {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: wrap;
}

.pill {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  padding: var(--sp-8) var(--sp-16);
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border-subtle);
  background: var(--card-bg);
  color: var(--text-bg);
  cursor: pointer;
  transition: all 0.15s;
  height: 40px;
  display: flex;
  align-items: center;
}

.pill:hover {
  transform: scale(1.02);
}

.pill:active {
  transform: scale(0.98);
}

.pill-active {
  background: var(--evo-ink);
  color: var(--card-white);
  border-color: var(--evo-ink);
}

[data-theme="dark"] .pill-active {
  background: #fafafa;
  color: var(--evo-ink);
  border-color: #fafafa;
}

.pill-meta {
  font-size: 12px;
  font-weight: 700;
  color: var(--subsubtext);
}

/* Forms */
.form-showcase {
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.form-label {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--subtext);
}

.form-input {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  padding: var(--sp-8) var(--sp-12);
  border: 1px solid var(--card-border-subtle);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  height: 44px;
  background: var(--card-bg);
  color: var(--text-bg);
  box-shadow: var(--card-elevation);
}

[data-theme="dark"] .form-input {
  box-shadow: none;
}

.form-input::placeholder {
  color: var(--subsubtext);
  font-weight: 700;
}

.form-input:focus {
  border-color: var(--info-blue);
  box-shadow: 0 0 0 3px rgba(9, 114, 241, 0.12);
}

.form-input-error {
  border: 3px solid var(--loss-pink) !important;
  color: var(--loss-pink);
  box-shadow: none !important;
}

.form-input-error:focus {
  box-shadow: 0 0 0 3px rgba(238, 0, 83, 0.12);
}

.form-error {
  font-size: 12px;
  font-weight: 700;
  color: var(--loss-pink);
}

.form-search {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  border: 1px solid var(--card-border-subtle);
  border-radius: var(--radius-sm);
  padding: 0 var(--sp-12);
  height: 44px;
  background: var(--card-bg);
  box-shadow: var(--card-elevation);
}

[data-theme="dark"] .form-search {
  box-shadow: none;
}

.form-search-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-4);
  background: var(--evo-ink);
  color: var(--card-white);
  font-size: 12px;
  font-weight: 900;
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--sp-6);
  white-space: nowrap;
  letter-spacing: -0.02em;
}

[data-theme="dark"] .form-search-tag {
  background: #fafafa;
  color: var(--evo-ink);
}

.form-search-input {
  border: none;
  box-shadow: none !important;
  padding: 0;
  height: auto;
  flex: 1;
}

.form-search-input:focus {
  box-shadow: none !important;
}

/* Detail Rows */
.detail-rows-showcase {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.detail-row {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: var(--sp-12) 0;
  border-bottom: 1px solid var(--nav-border);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
  flex-shrink: 0;
}

.detail-dots {
  flex: 1;
  border-bottom: 2px dotted var(--subsubsubtext);
  min-width: 24px;
  align-self: flex-end;
  margin-bottom: 4px;
}

.detail-value {
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.detail-value-pill {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: var(--card-bg);
  padding: var(--sp-4) var(--sp-12);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-elevation);
  border: var(--card-border);
  flex-shrink: 0;
  color: var(--info-blue);
}

/* Spacing Scale */
.spacing-scale {
  display: flex;
  align-items: flex-end;
  gap: var(--sp-16);
  padding-bottom: var(--sp-24);
}

.spacing-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-8);
}

.spacing-bar {
  width: 32px;
  background: var(--evo-ink);
  border-radius: var(--sp-4);
  min-height: 1px;
}

[data-theme="dark"] .spacing-bar {
  background: #fafafa;
}

.spacing-label {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--subtext);
}

/* Spacing Rhythm */
.spacing-rhythm {
  margin-top: var(--sp-32);
}

.spacing-rhythm-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-16);
}

.spacing-rhythm-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}

.spacing-rhythm-item {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
}

.spacing-rhythm-bar {
  height: 32px;
  background: var(--evo-red);
  border-radius: var(--sp-4);
  flex-shrink: 0;
}

.spacing-rhythm-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.spacing-rhythm-value {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.spacing-rhythm-role {
  font-size: 12px;
  font-weight: 700;
  color: var(--subtext);
}

/* Border Radius */
.radius-scale {
  display: flex;
  gap: var(--sp-24);
  flex-wrap: wrap;
}

.radius-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-8);
}

.radius-swatch {
  width: 80px;
  height: 80px;
  background: var(--evo-ink);
}

[data-theme="dark"] .radius-swatch {
  background: #fafafa;
}

.radius-label {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.radius-value {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--subtext);
}

.radius-use {
  font-size: 10px;
  font-weight: 800;
  color: var(--subsubtext);
  text-align: center;
  max-width: 120px;
}

.radius-warning {
  margin-top: var(--sp-24);
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  font-size: 14px;
  font-weight: 700;
  color: var(--loss-pink);
  background: rgba(238, 0, 83, 0.06);
  padding: var(--sp-12) var(--sp-16);
  border-radius: var(--radius-sm);
}

.radius-warning-icon {
  font-size: 16px;
  font-weight: 900;
}

/* Elevation */
.elevation-mode-label {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--subtext);
  margin-bottom: var(--sp-12);
}

.elevation-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-12);
  margin-bottom: var(--sp-32);
}

.elevation-card {
  border-radius: var(--radius-md);
  padding: var(--sp-24);
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--sp-4);
}

.elevation-name {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.elevation-detail {
  font-size: 10px;
  font-weight: 800;
  color: var(--subsubtext);
}

.elevation-flat {
  background: var(--off-white);
}

[data-theme="dark"] .elevation-flat {
  background: #18171c;
}

.elevation-ui {
  background: var(--card-white);
  box-shadow: var(--ui-card-shadow);
}

.elevation-nested {
  background: var(--card-white);
  border: 1px solid var(--card-border-subtle);
}

.elevation-physical {
  background: var(--card-white);
  box-shadow: var(--playing-card-shadow);
}

/* Dark elevation cards */
.elevation-grid-dark {
  background: #18171c;
  border-radius: var(--radius-md);
  padding: var(--sp-12);
}

.elevation-dark-flat {
  background: #18171c;
}

.elevation-dark-ui {
  background: #23222a;
  border: 1px solid rgba(250, 250, 250, 0.05);
}

.elevation-dark-nested {
  background: #23222a;
  border: 1px solid rgba(250, 250, 250, 0.05);
}

.elevation-colored {
  background: var(--evo-red);
  border: 3px solid rgba(0, 0, 0, 0.05);
}

/* Iconography */
.icon-scale {
  display: flex;
  gap: var(--sp-24);
  flex-wrap: wrap;
  align-items: flex-end;
}

.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
}

.icon-demo {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-elevation);
  border: var(--card-border);
}

.icon-size {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.icon-stroke {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--subtext);
}

.icon-use {
  font-size: 10px;
  font-weight: 800;
  color: var(--subsubtext);
  text-align: center;
  max-width: 100px;
}

.icon-rule {
  margin-top: var(--sp-24);
  font-size: 12px;
  font-weight: 700;
  color: var(--subtext);
  padding: var(--sp-12) var(--sp-16);
  background: var(--text-primary-5);
  border-radius: var(--radius-sm);
}

.icon-rule-label {
  display: block;
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--sp-32) var(--sp-24);
  border-top: 1px solid var(--nav-border);
  font-size: 14px;
  font-weight: 700;
  color: var(--subtext);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-title {
    font-size: 32px;
  }

  .color-grid,
  .color-grid-4,
  .color-grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .elevation-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .button-showcase {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-full {
    max-width: 100%;
  }
}