/* ========================================
   Spark Website — Cal.com Light Theme
   ======================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --border: #e5e7eb;
  --border-hover: #d1d5db;
  --cyan: #38bdf8;
  --cyan-dark: #0ea5e9;
  --cyan-light: #e0f2fe;
  --gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.06);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Dark theme via attribute */
[data-theme="dark"] {
  --bg: #18181b;
  --bg-secondary: #27272a;
  --bg-tertiary: #3f3f46;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --border: #3f3f46;
  --border-hover: #52525b;
  --cyan: #38bdf8;
  --cyan-dark: #7dd3fc;
  --cyan-light: rgba(56, 189, 248, 0.15);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 4px 6px rgba(0,0,0,0.3);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.5), 0 8px 16px rgba(0,0,0,0.35);
}

/* Fallback: system preference when no manual choice saved */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #18181b;
    --bg-secondary: #27272a;
    --bg-tertiary: #3f3f46;
    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --border: #3f3f46;
    --border-hover: #52525b;
    --cyan: #38bdf8;
    --cyan-dark: #7dd3fc;
    --cyan-light: rgba(56, 189, 248, 0.15);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 4px 6px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.5), 0 8px 16px rgba(0,0,0,0.35);
  }
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,0.8);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.nav--scrolled {
  background: rgba(255,255,255,0.95);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.nav-links a:not(.btn):hover { color: var(--text); }

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

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

.btn-ghost {
  border-color: transparent;
  background: transparent;
}

.btn-ghost:hover {
  background: var(--bg-secondary);
}

.btn-secondary {
  background: var(--bg);
  border-color: var(--border);
}

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

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

.btn-primary:hover {
  background: #374151;
  border-color: #374151;
}

.btn-lg { padding: 12px 24px; font-size: 15px; }

/* ========================================
   Hero
   ======================================== */
.hero {
  padding: 140px 24px 80px;
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-text {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.hero-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan-dark);
  background: var(--cyan-light);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(40px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  color: var(--text);
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 16px;
}

/* Hero Phone */
.hero-phone {
  position: relative;
  display: flex;
  justify-content: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

/* ========================================
   Phone Mockup
   ======================================== */
.phone-mockup {
  position: relative;
  width: 300px;
  background: #1a1a1a;
  border-radius: 44px;
  padding: 12px;
  box-shadow:
    0 0 0 2px #2a2a2a,
    0 20px 60px rgba(0,0,0,0.2),
    0 8px 20px rgba(0,0,0,0.15);
  z-index: 2;
}

.phone-mockup--hero {
  width: 320px;
}

.phone-mockup::before {
  content: '';
  position: absolute;
  right: -3px;
  top: 100px;
  width: 3px;
  height: 40px;
  background: #2a2a2a;
  border-radius: 0 2px 2px 0;
}

.phone-mockup::after {
  content: '';
  position: absolute;
  left: -3px;
  top: 80px;
  width: 3px;
  height: 30px;
  background: #2a2a2a;
  border-radius: 2px 0 0 2px;
  box-shadow: 0 36px 0 #2a2a2a;
}

.phone-mockup--hero {
  width: 340px;
}

.phone-screen {
  border-radius: 32px;
  overflow: hidden;
  background: #fff;
}

.phone-screen img {
  width: 100%;
  height: auto;
  display: block;
}

/* Phone Shadow */
.phone-shadow {
  position: absolute;
  bottom: -24px;
  left: 10%;
  right: 10%;
  height: 50px;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0.18) 0%, transparent 70%);
  filter: blur(12px);
  z-index: 1;
}

/* ========================================
   Floating Cards
   ======================================== */
.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s, transform 0.6s;
  z-index: 10;
  white-space: nowrap;
}

.floating-card.floating {
  opacity: 1;
  transform: translateY(0);
}

.floating-card--diff {
  top: 20%;
  right: -20px;
  animation: float 3s ease-in-out infinite;
}

.floating-card--terminal {
  bottom: 25%;
  left: -30px;
  animation: float 3s ease-in-out infinite 1s;
}

.floating-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--cyan-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-dark);
  flex-shrink: 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ========================================
   Gradient Text
   ======================================== */
.gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Section Header
   ======================================== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan-dark);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ========================================
   Logos
   ======================================== */
.logos {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.logos-label {
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.logos-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.logo-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: -0.02em;
}

.logo-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
}

/* ========================================
   How It Works
   ======================================== */
.how-it-works {
  padding: 120px 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  opacity: 0;
  transform: translateY(12px);
}

.step.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.step-num {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, var(--text) 0%, var(--text-tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.step p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.code-block {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #eab308; }
.code-dot.green { background: #22c55e; }

.code-title {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-left: 8px;
}

.code-block code {
  display: block;
  padding: 14px;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}

.step-preview {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preview-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: border-color 0.15s, background 0.15s;
}

.preview-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-tertiary);
}

.preview-card svg { color: var(--cyan); flex-shrink: 0; }

/* ========================================
   Theme Showcase
   ======================================== */
.theme-showcase {
  padding: 120px 0;
}

.theme-toggle-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  opacity: 0;
  transform: translateY(20px);
}

.theme-toggle-wrapper.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-toggle {
  display: flex;
  position: relative;
  background: var(--bg-tertiary);
  border-radius: 10px;
  padding: 4px;
}

.theme-btn {
  position: relative;
  z-index: 2;
  padding: 10px 24px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color 0.2s;
}

.theme-btn.active {
  color: var(--text);
}

.theme-slider {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  background: var(--bg);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-toggle[data-active="dark"] .theme-slider {
  transform: translateX(100%);
}

.theme-phones {
  display: flex;
  justify-content: center;
}

.phone-mockup--theme {
  width: 300px;
}

.theme-img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity 0.4s ease;
}

.theme-img.hidden {
  display: none;
}

/* ========================================
   Showcase — Feature Rows
   ======================================== */
.showcase {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 96px;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row--reverse {
  direction: rtl;
}

.feature-row--reverse > * {
  direction: ltr;
}

.feature-text {
  opacity: 0;
  transform: translateY(20px);
}

.feature-row.revealed .feature-text {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 4px 12px;
  background: var(--cyan-light);
  border-radius: 6px;
}

.feature-text h3 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.feature-text > p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-list svg {
  color: #22c55e;
  flex-shrink: 0;
}

/* Feature Visual */
.feature-visual {
  position: relative;
  display: flex;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
}

.feature-row.revealed .feature-visual {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

/* Visual Accents */
.visual-accent {
  position: absolute;
  z-index: 10;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s 0.3s, transform 0.5s 0.3s;
}

.feature-row.revealed .visual-accent {
  opacity: 1;
  transform: translateY(0);
}

.visual-accent--chat {
  top: 10%;
  right: -10px;
}

.visual-accent--projects {
  bottom: 15%;
  left: -15px;
}

.visual-accent--terminal {
  bottom: 20%;
  right: -15px;
}

.visual-accent--files {
  top: 15%;
  left: -15px;
}

.accent-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: #fff;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
}

.accent-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
}

.accent-badge {
  font-size: 10px;
  font-weight: 600;
  color: #16a34a;
  background: #dcfce7;
  padding: 2px 8px;
  border-radius: 4px;
}

.accent-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.accent-keys {
  display: flex;
  gap: 4px;
  padding: 6px 10px;
  background: #1f2937;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

.accent-key {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  background: #374151;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  color: #9ca3af;
}

.accent-key svg {
  color: #9ca3af;
}

/* ========================================
   Features Grid
   ======================================== */
.features { padding: 120px 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feature {
  background: var(--bg);
  padding: 32px;
  opacity: 0;
  transform: translateY(12px);
}

.feature.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature:hover { background: var(--bg-secondary); }

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--cyan-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--cyan-dark);
}

.feature h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========================================
   FAQ
   ======================================== */
.faq { padding: 120px 0; }

.faq-list {
  max-width: 640px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(8px);
}

.faq-item.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s, transform 0.4s;
}

.faq-item summary {
  padding: 20px 0;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--text-tertiary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 0 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   CTA
   ======================================== */
.cta {
  padding: 120px 0;
  text-align: center;
  background: var(--bg-secondary);
}

.cta h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Dark Theme — Hardcoded Color Overrides
   ======================================== */
[data-theme="dark"] .nav,
[data-theme="dark"] .nav--scrolled {
  background: rgba(24, 24, 27, 0.8);
}

[data-theme="dark"] .nav--scrolled {
  background: rgba(24, 24, 27, 0.95);
}

[data-theme="dark"] .phone-screen {
  background: #27272a;
}

[data-theme="dark"] .floating-card {
  background: #27272a;
  color: var(--text);
}

[data-theme="dark"] .accent-card {
  background: #27272a;
}

[data-theme="dark"] .accent-badge {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.15);
}

[data-theme="dark"] .btn-primary {
  background: #fafafa;
  color: #18181b;
  border-color: #fafafa;
}

[data-theme="dark"] .btn-primary:hover {
  background: #e4e4e7;
  border-color: #e4e4e7;
}

[data-theme="dark"] .accent-keys {
  background: #18181b;
}

[data-theme="dark"] .accent-key {
  background: #27272a;
  color: #a1a1aa;
}

[data-theme="dark"] .accent-key svg {
  color: #a1a1aa;
}

/* System preference overrides */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav,
  :root:not([data-theme="light"]) .nav--scrolled {
    background: rgba(24, 24, 27, 0.8);
  }

  :root:not([data-theme="light"]) .nav--scrolled {
    background: rgba(24, 24, 27, 0.95);
  }

  :root:not([data-theme="light"]) .phone-screen {
    background: #27272a;
  }

  :root:not([data-theme="light"]) .floating-card {
    background: #27272a;
    color: var(--text);
  }

  :root:not([data-theme="light"]) .accent-card {
    background: #27272a;
  }

  :root:not([data-theme="light"]) .accent-badge {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.15);
  }

  :root:not([data-theme="light"]) .btn-primary {
    background: #fafafa;
    color: #18181b;
    border-color: #fafafa;
  }

  :root:not([data-theme="light"]) .btn-primary:hover {
    background: #e4e4e7;
    border-color: #e4e4e7;
  }

  :root:not([data-theme="light"]) .accent-keys {
    background: #18181b;
  }

  :root:not([data-theme="light"]) .accent-key {
    background: #27272a;
    color: #a1a1aa;
  }

  :root:not([data-theme="light"]) .accent-key svg {
    color: #a1a1aa;
  }
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .nav-links a:not(.btn) { display: none; }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-desc {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-note {
    text-align: center;
  }

  .hero-phone {
    order: -1;
  }

  .phone-mockup {
    width: 260px;
  }

  .phone-mockup--hero {
    width: 280px;
  }

  .floating-card {
    display: none;
  }

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

  .feature-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-row--reverse {
    direction: ltr;
  }

  .feature-text {
    text-align: center;
  }

  .feature-list {
    align-items: center;
  }

  .visual-accent {
    display: none;
  }

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

  .phone-mockup--theme {
    width: 260px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ========================================
   Theme-aware screenshots
   ======================================== */
.phone-screen .theme-img--dark {
  display: none;
}

body.dark .phone-screen .theme-img--dark {
  display: block;
}

body.dark .phone-screen .theme-img--light {
  display: none;
}

body.dark {
  --bg: #0a0a0b;
  --bg-secondary: #111113;
  --bg-tertiary: #18181b;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --border: #27272a;
  --border-hover: #3f3f46;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.5), 0 4px 6px rgba(0,0,0,0.3);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.6), 0 8px 16px rgba(0,0,0,0.4);
}

body.dark .nav {
  background: rgba(10,10,11,0.8);
}

body.dark .nav--scrolled {
  background: rgba(10,10,11,0.95);
}

body.dark .code-block {
  background: #18181b;
  border-color: #27272a;
}