/* ================================================================
   @laddhaanshul/color-tokens — Promotional Website Stylesheet
   Modern, responsive, mobile-first design with light/dark theming
   ================================================================ */

/* ─── CSS Custom Properties (Theming) ─────────────────────── */
:root {
  /* Colors — Light Theme */
  --color-bg:              #FFFFFF;
  --color-bg-secondary:    #F9FAFB;
  --color-bg-tertiary:     #F3F4F6;
  --color-bg-inverse:      #111827;
  --color-text-primary:    #111827;
  --color-text-secondary:  #4B5563;
  --color-text-tertiary:   #9CA3AF;
  --color-text-inverse:    #FFFFFF;
  --color-border:          #E5E7EB;
  --color-border-strong:   #D1D5DB;
  --color-brand-primary:   #2563EB;
  --color-brand-hover:     #1D4ED8;
  --color-brand-subtle:    #EFF6FF;
  --color-accent:          #7E22CE;
  --color-accent-subtle:   #FAF5FF;

  /* Layout */
  --header-height:         64px;
  --container-max:         1200px;
  --container-padding:     24px;
  --section-spacing:       96px;
  --border-radius:         12px;
  --border-radius-sm:      8px;
  --border-radius-xs:      6px;

  /* Typography */
  --font-sans:             'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono:             'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-size-xs:          0.75rem;
  --font-size-sm:          0.875rem;
  --font-size-base:        1rem;
  --font-size-lg:          1.125rem;
  --font-size-xl:          1.25rem;
  --font-size-2xl:         1.5rem;
  --font-size-3xl:         2rem;
  --font-size-4xl:         2.5rem;
  --font-size-5xl:         3.5rem;

  /* Shadows */
  --shadow-sm:             0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:             0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg:             0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --shadow-xl:             0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Transitions */
  --transition-fast:       150ms ease;
  --transition-base:       250ms ease;
  --transition-slow:       400ms ease;
}

/* ─── Dark Theme ───────────────────────────────────────────── */
[data-theme="dark"] {
  --color-bg:              #030712;
  --color-bg-secondary:    #111827;
  --color-bg-tertiary:     #1F2937;
  --color-bg-inverse:      #F9FAFB;
  --color-text-primary:    #F9FAFB;
  --color-text-secondary:  #D1D5DB;
  --color-text-tertiary:   #6B7280;
  --color-text-inverse:    #111827;
  --color-border:          #374151;
  --color-border-strong:   #4B5563;
  --color-brand-primary:   #60A5FA;
  --color-brand-hover:     #93C5FD;
  --color-brand-subtle:    #172554;
  --color-accent:          #C084FC;
  --color-accent-subtle:   #3B0764;

  --shadow-sm:             0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:             0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg:             0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.3);
  --shadow-xl:             0 20px 25px -5px rgba(0,0,0,0.5), 0 8px 10px -6px rgba(0,0,0,0.4);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

code {
  font-family: var(--font-mono);
  background-color: var(--color-bg-tertiary);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

[data-theme="dark"] code {
  background-color: var(--color-bg-tertiary);
}

/* ─── Container ────────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ─── Header ───────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

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

.logo-icon {
  display: flex;
  align-items: center;
}

.logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Navigation */
.main-nav {
  display: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--border-radius-xs);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--border-radius-sm);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.icon-moon { display: none; }
.icon-sun  { display: block; }

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

.github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

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

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  gap: 5px;
  padding: 8px;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.hamburger:hover {
  background-color: var(--color-bg-tertiary);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Open */
.main-nav.open {
  display: block;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 12px var(--container-padding);
  box-shadow: var(--shadow-lg);
}

.main-nav.open .nav-links {
  flex-direction: column;
  gap: 4px;
}

/* ─── Hero Section ─────────────────────────────────────────── */
.hero {
  padding-top: calc(var(--header-height) + 64px);
  padding-bottom: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-brand-subtle) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: var(--color-brand-subtle);
  color: var(--color-brand-primary);
  border-radius: 100px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid transparent;
}

[data-theme="dark"] .hero-badge {
  border-color: var(--color-border);
}

.hero-badge .badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #22C55E;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  max-width: 700px;
  margin-inline: auto;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #EC4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.install-block {
  display: flex;
  align-items: center;
  gap: 0;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  max-width: 480px;
  width: 100%;
  transition: border-color var(--transition-fast);
}

.install-block:hover {
  border-color: var(--color-brand-primary);
}

.install-block code {
  flex: 1;
  background: transparent;
  padding: 14px 16px;
  font-size: var(--font-size-sm);
  white-space: nowrap;
  overflow-x: auto;
  border-radius: 0;
  color: var(--color-text-primary);
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 16px;
  background: transparent;
  border: none;
  border-left: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.copy-btn:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
}

.copy-btn.copied {
  color: #22C55E;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ─── Section Shared ───────────────────────────────────────── */
section {
  padding-block: var(--section-spacing);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.6;
}

.section-subtitle code {
  font-size: 0.85em;
}

/* ─── Features Section ─────────────────────────────────────── */
.features {
  background-color: var(--color-bg-secondary);
  transition: background-color var(--transition-base);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.feature-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-strong);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 16px;
  font-size: 24px;
}

.feature-icon.blue    { background-color: #EFF6FF; }
.feature-icon.green   { background-color: #F0FDF4; }
.feature-icon.purple  { background-color: #FAF5FF; }
.feature-icon.orange  { background-color: #FFF7ED; }
.feature-icon.red     { background-color: #FEF2F2; }
.feature-icon.indigo  { background-color: #EEF2FF; }

[data-theme="dark"] .feature-icon.blue    { background-color: #172554; }
[data-theme="dark"] .feature-icon.green   { background-color: #052E16; }
[data-theme="dark"] .feature-icon.purple  { background-color: #3B0764; }
[data-theme="dark"] .feature-icon.orange  { background-color: #431407; }
[data-theme="dark"] .feature-icon.red     { background-color: #450A0A; }
[data-theme="dark"] .feature-icon.indigo  { background-color: #1E1B4B; }

.feature-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ─── Palette Section ──────────────────────────────────────── */
.palette-section {
  background-color: var(--color-bg);
}

.palette-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
}

.filter-btn.active {
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #FFFFFF;
}

.palette-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.color-family {
  transition: opacity var(--transition-base);
}

.color-family.hidden {
  display: none;
}

.family-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.shade-row {
  display: flex;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.shade-row-solid {
  gap: 12px;
  overflow: visible;
  box-shadow: none;
}

.color-swatch {
  flex: 1;
  min-height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 4px;
  cursor: pointer;
  transition: transform var(--transition-fast), filter var(--transition-fast), flex var(--transition-base);
  position: relative;
  user-select: none;
}

.color-swatch:hover {
  flex: 2.5;
  z-index: 2;
}

.color-swatch:active {
  filter: brightness(0.92);
}

.swatch-shade {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  opacity: 0.7;
  text-transform: uppercase;
}

.swatch-hex {
  font-family: var(--font-mono);
  font-size: 10px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  margin-top: 2px;
}

.color-swatch:hover .swatch-hex {
  opacity: 1;
}

.color-swatch-lg {
  flex: 1;
  min-height: 80px;
  border-radius: var(--border-radius-sm);
}

/* Copy tooltip */
.color-swatch .copy-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background-color: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  padding: 4px 10px;
  border-radius: var(--border-radius-xs);
  font-size: var(--font-size-xs);
  font-family: var(--font-mono);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.color-swatch .copy-tooltip.show {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ─── Code Examples Section ────────────────────────────────── */
.examples {
  background-color: var(--color-bg-secondary);
  transition: background-color var(--transition-base);
}

.example-tabs {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 32px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--border-radius-sm);
  padding: 4px;
  max-width: 320px;
  margin-inline: auto;
}

.example-tab {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: var(--border-radius-xs);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.example-tab.active {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

.example-panel {
  display: none;
}

.example-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.code-block {
  position: relative;
  background-color: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .code-block {
  border: 1px solid var(--color-border);
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: rgba(0,0,0,0.15);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

[data-theme="dark"] .code-block-header {
  background-color: rgba(255,255,255,0.05);
  border-bottom-color: rgba(255,255,255,0.08);
}

.code-block-lang {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
}

.code-copy-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--border-radius-xs);
  background: transparent;
  color: rgba(255,255,255,0.5);
  font-size: var(--font-size-xs);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.code-copy-btn:hover {
  border-color: rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.8);
}

.code-copy-btn.copied {
  color: #4ADE80;
  border-color: #4ADE80;
}

pre {
  padding: 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  tab-size: 2;
}

/* Syntax highlighting (simple) */
.hl-kw { color: #C084FC; }       /* keywords */
.hl-str { color: #86EFAC; }      /* strings */
.hl-cm { color: #6B7280; font-style: italic; }  /* comments */
.hl-fn { color: #60A5FA; }       /* functions */
.hl-const { color: #FACC15; }    /* constants */
.hl-type { color: #2DD4BF; }     /* types */
.hl-num { color: #FB923C; }      /* numbers */
.hl-prop { color: #F9A8D4; }     /* properties */
.hl-tag { color: #F87171; }      /* JSX tags */
.hl-attr { color: #FBBF24; }     /* JSX attributes */

[data-theme="dark"] .hl-kw { color: #C084FC; }
[data-theme="dark"] .hl-str { color: #86EFAC; }
[data-theme="dark"] .hl-cm { color: #6B7280; }
[data-theme="dark"] .hl-fn { color: #93C5FD; }
[data-theme="dark"] .hl-const { color: #FACC15; }
[data-theme="dark"] .hl-type { color: #2DD4BF; }
[data-theme="dark"] .hl-num { color: #FB923C; }
[data-theme="dark"] .hl-prop { color: #F9A8D4; }

/* ─── Install Section ──────────────────────────────────────── */
.install-section {
  background-color: var(--color-bg);
}

.install-guide {
  max-width: 700px;
  margin-inline: auto;
}

.install-step {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.install-step:last-child {
  border-bottom: none;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 12px;
  line-height: 1.7;
}

.step-content pre {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  overflow-x: auto;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
}

/* ─── Footer ───────────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: 64px;
  padding-bottom: 32px;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-tagline {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  max-width: 280px;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-brand-primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: 4px;
}

/* ─── Responsive: Tablet ───────────────────────────────────── */
@media (min-width: 640px) {
  :root {
    --font-size-4xl: 3rem;
    --font-size-5xl: 4rem;
  }

  .hero {
    padding-top: calc(var(--header-height) + 96px);
    padding-bottom: 96px;
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

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

  .color-swatch {
    min-height: 88px;
  }

  .swatch-hex {
    font-size: 11px;
  }

  .swatch-shade {
    font-size: 11px;
  }

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

/* ─── Responsive: Desktop ──────────────────────────────────── */
@media (min-width: 1024px) {
  .main-nav {
    display: flex;
  }

  .hamburger {
    display: none;
  }

  :root {
    --font-size-4xl: 3.5rem;
    --font-size-5xl: 4.5rem;
    --section-spacing: 120px;
  }

  .hero {
    padding-top: calc(var(--header-height) + 120px);
    padding-bottom: 120px;
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .color-swatch {
    min-height: 96px;
    padding: 14px 8px;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

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