/* ============================================================
   buoyient docs-site — Shared Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&family=Space+Grotesk:wght@500;600;700&display=swap');

/* ── Brand Tokens ── */
:root {
  --beacon-yellow: #ffe066;
  --buoy-orange: #ff6b35;
  --ocean-blue: #4a9eff;
  --current-teal: #00dcc6;
  --deep-navy: #0f1117;
  --surface-dark: #1a1d27;
  --border-color: #2a2d37;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a8;
  --text-dim: #666;
  --danger: #ff4757;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Reset & Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--deep-navy);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ocean-blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--current-teal); }

/* ── Site Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 17, 23, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 40px;
  height: 60px;
  display: flex; align-items: center; gap: 32px;
}
.site-header .logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem;
  color: var(--text-primary); text-decoration: none; margin-right: auto;
}
.site-header .logo svg { flex-shrink: 0; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a {
  font-size: 0.85rem; font-weight: 500; color: var(--text-secondary);
  padding: 4px 0; border-bottom: 2px solid transparent; transition: all 0.2s;
}
.site-header nav a:hover { color: var(--text-primary); }
.site-header nav a.active {
  color: var(--text-primary);
  border-bottom-color: var(--buoy-orange);
}

/* Mobile nav toggle */
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; }

/* ── Site Footer ── */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 40px 32px;
  text-align: center;
}
.site-footer .tagline {
  font-style: italic; color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 16px;
}
.site-footer .footer-links {
  display: flex; justify-content: center; gap: 24px; margin-bottom: 20px;
}
.site-footer .footer-links a { font-size: 0.85rem; color: var(--text-dim); }
.site-footer .footer-links a:hover { color: var(--ocean-blue); }
.site-footer .copy { font-size: 0.75rem; color: var(--text-dim); }

/* Wave separator above footer */
.wave-separator {
  width: 100%; height: 40px; overflow: hidden; margin-bottom: -1px;
}
.wave-separator svg { width: 100%; height: 100%; display: block; }

/* ── Sections ── */
.section {
  max-width: 1100px; margin: 0 auto;
  padding: 80px 40px;
}
.section + .section { border-top: 1px solid var(--border-color); }
.section-sm { padding: 48px 40px; }

/* ── Hero ── */
.hero {
  max-width: 1100px; margin: 0 auto;
  padding: 100px 40px 80px;
  text-align: center;
}
.hero h1 {
  font-family: var(--font-heading); font-size: 3.2rem; font-weight: 700;
  letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 16px;
}
.hero h1 .highlight { color: var(--beacon-yellow); }
.hero .subtitle {
  font-size: 1.15rem; color: var(--text-secondary); font-style: italic;
  max-width: 520px; margin: 0 auto;
}
.hero .hero-icon {
  margin: 32px auto 0; display: block;
  animation: beacon-pulse 3s ease-in-out infinite;
}

/* ── Typography ── */
h2 {
  font-family: var(--font-heading); font-size: 2rem; font-weight: 700;
  letter-spacing: -0.5px; margin-bottom: 12px;
}
h2 .num { color: var(--beacon-yellow); margin-right: 8px; font-size: 1.1rem; }
h3 {
  font-family: var(--font-heading); font-size: 1.2rem; font-weight: 600;
  margin-bottom: 16px; color: var(--text-secondary);
}
.section-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 40px; max-width: 640px; }

/* ── Cards ── */
.card {
  background: var(--surface-dark); border: 1px solid var(--border-color);
  border-radius: 14px; padding: 28px;
  transition: border-color 0.25s, transform 0.25s;
}
.card:hover { border-color: var(--ocean-blue); transform: translateY(-2px); }
.card h4 { font-family: var(--font-heading); font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
.card .card-icon { margin-bottom: 16px; }

/* Card grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ── Split Panel ── */
.split-panel {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  align-items: start;
}

/* ── Code Blocks ── */
.code-block {
  position: relative;
  background: var(--surface-dark); border: 1px solid var(--border-color);
  border-radius: 12px; overflow: hidden;
}
.code-block .code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem; color: var(--text-dim);
  font-family: var(--font-mono);
}
.code-block pre {
  padding: 20px; margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem; line-height: 1.8;
  color: var(--text-primary);
}
.code-block pre code { font-family: inherit; }
.code-block .copy-btn {
  background: rgba(255,255,255,0.08); border: 1px solid var(--border-color);
  color: var(--text-secondary); border-radius: 6px;
  padding: 4px 12px; font-size: 0.75rem; cursor: pointer;
  font-family: var(--font-body); transition: all 0.2s;
}
.code-block .copy-btn:hover { background: rgba(255,255,255,0.14); color: var(--text-primary); }
.code-block .copy-btn.copied { color: var(--current-teal); border-color: var(--current-teal); }

/* Syntax highlighting (lightweight, manual classes) */
.kw { color: #c792ea; }  /* keyword */
.fn { color: #82aaff; }  /* function */
.str { color: #c3e88d; } /* string */
.typ { color: #ffcb6b; } /* type */
.ann { color: #f07178; } /* annotation */
.cmt { color: #546e7a; font-style: italic; } /* comment */
.num { color: #f78c6c; } /* number in code (scoped inside pre) */
pre .num { font-size: inherit; margin: 0; }

/* Code block accent glow */
.code-block.glow-teal { border-color: rgba(0, 220, 198, 0.3); box-shadow: 0 0 20px rgba(0, 220, 198, 0.08); }
.code-block.dimmed { opacity: 0.6; }
.code-block.dimmed:hover { opacity: 0.85; }

/* ── Tabs ── */
.tabs {
  display: flex; gap: 4px; margin-bottom: -1px; position: relative; z-index: 1;
}
.tab-btn {
  font-family: var(--font-body); font-size: 0.82rem; font-weight: 500;
  padding: 8px 18px; cursor: pointer;
  background: transparent; border: 1px solid transparent;
  border-bottom: none; border-radius: 8px 8px 0 0;
  color: var(--text-dim); transition: all 0.2s;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active {
  background: var(--surface-dark); border-color: var(--border-color);
  color: var(--text-primary);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Badges ── */
.badge {
  display: inline-block; padding: 2px 10px;
  border-radius: 20px; font-size: 0.72rem; font-weight: 600;
  font-family: var(--font-mono); letter-spacing: 0.3px;
}
.badge-yellow { background: rgba(255, 224, 102, 0.15); color: var(--beacon-yellow); }
.badge-orange { background: rgba(255, 107, 53, 0.15); color: var(--buoy-orange); }
.badge-teal { background: rgba(0, 220, 198, 0.15); color: var(--current-teal); }
.badge-blue { background: rgba(74, 158, 255, 0.15); color: var(--ocean-blue); }
.badge-red { background: rgba(255, 71, 87, 0.15); color: var(--danger); }
.badge-lines {
  font-size: 0.8rem; font-weight: 600; font-family: var(--font-mono);
  color: var(--text-dim);
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  padding: 12px 28px; border-radius: 10px; border: none;
  cursor: pointer; transition: all 0.25s; text-decoration: none;
}
.btn-primary {
  background: var(--buoy-orange); color: #fff;
}
.btn-primary:hover { background: #e85a25; color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3); }
.btn-secondary {
  background: transparent; color: var(--ocean-blue);
  border: 1.5px solid var(--ocean-blue);
}
.btn-secondary:hover { background: rgba(74, 158, 255, 0.08); color: var(--ocean-blue); }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; border-radius: 8px; }

/* ── Toggle Switch ── */
.toggle-wrap {
  display: flex; align-items: center; gap: 12px; font-size: 0.85rem; font-weight: 500;
}
.toggle {
  position: relative; width: 52px; height: 28px;
  background: var(--current-teal); border-radius: 14px;
  cursor: pointer; transition: background 0.3s;
}
.toggle.off { background: var(--text-dim); }
.toggle::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 22px; height: 22px; background: #fff;
  border-radius: 50%; transition: transform 0.3s;
}
.toggle.off::after { transform: translateX(24px); }
.toggle-label { color: var(--text-secondary); }
.toggle-label .status { font-weight: 600; }
.toggle-label .status.online { color: var(--current-teal); }
.toggle-label .status.offline { color: var(--beacon-yellow); }

/* ── Phone Frame (for demos) ── */
.phone-frame {
  width: 320px; max-width: 100%;
  background: var(--deep-navy);
  border: 2px solid var(--border-color);
  border-radius: 28px;
  padding: 16px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  margin: 0 auto;
}
.phone-frame .phone-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 4px 12px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 12px;
}
.phone-frame .phone-header .app-name {
  font-family: var(--font-heading); font-weight: 600; font-size: 0.95rem;
}
.phone-frame .phone-content { min-height: 300px; }

/* ── Todo demo items ── */
.todo-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px;
  background: var(--surface-dark); border-radius: 8px;
  margin-bottom: 8px;
  animation: slide-in 0.3s ease-out;
  font-size: 0.85rem;
}
.todo-item .todo-text { flex: 1; }
.todo-item .badge { flex-shrink: 0; margin-left: 8px; }

.queue-counter {
  text-align: center; padding: 8px;
  font-size: 0.78rem; color: var(--text-dim);
  font-family: var(--font-mono);
}
.queue-counter .count { color: var(--beacon-yellow); font-weight: 600; }

/* ── Step Indicator ── */
.step-bar {
  position: sticky; top: 104px; z-index: 90;
  background: rgba(15, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 40px;
  display: flex; align-items: center; justify-content: center; gap: 0;
}
.step-dot-group {
  display: flex; align-items: center;
}
.step-dot {
  width: 32px; height: 32px; border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 600; color: var(--text-dim);
  font-family: var(--font-mono);
  transition: all 0.4s;
}
.step-dot.active {
  border-color: var(--buoy-orange); color: var(--buoy-orange);
  box-shadow: 0 0 12px rgba(255, 107, 53, 0.25);
}
.step-dot.done {
  border-color: var(--current-teal); background: var(--current-teal); color: var(--deep-navy);
}
.step-line {
  width: 48px; height: 2px; background: var(--border-color);
  transition: background 0.4s;
}
.step-line.done { background: var(--current-teal); }

/* ── Checklist ── */
.checklist { list-style: none; }
.checklist li {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0; border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem; cursor: pointer;
  transition: opacity 0.2s;
}
.checklist li:last-child { border-bottom: none; }
.checklist .check-box {
  width: 22px; height: 22px; border-radius: 6px;
  border: 2px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.25s;
}
.checklist li.checked .check-box {
  border-color: var(--current-teal); background: var(--current-teal);
}
.checklist li.checked .check-box::after {
  content: '✓'; color: var(--deep-navy); font-size: 0.8rem; font-weight: 700;
}
.checklist li.checked { color: var(--text-dim); text-decoration: line-through; }

/* ── Celebration ── */
.celebration {
  text-align: center; padding: 32px;
  opacity: 0; transform: scale(0.9);
  transition: all 0.5s ease-out;
}
.celebration.show { opacity: 1; transform: scale(1); }
.celebration h3 { color: var(--current-teal); font-family: var(--font-heading); font-size: 1.5rem; }
.celebration p { color: var(--text-secondary); margin-top: 8px; }

/* ── Interactive Flow Diagram ── */
.flow-container { position: relative; padding: 20px 0; }
.flow-step {
  background: var(--surface-dark); border: 2px solid var(--border-color);
  border-radius: 12px; padding: 16px 20px;
  text-align: center; transition: all 0.4s;
  opacity: 0.4;
}
.flow-step.active {
  opacity: 1; border-color: var(--buoy-orange);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.15);
}
.flow-step.done {
  opacity: 0.8; border-color: var(--current-teal);
}
.flow-step .step-label {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--text-dim); margin-bottom: 6px;
}
.flow-step .step-text {
  font-size: 0.88rem; font-weight: 500;
}
.flow-step code {
  font-family: var(--font-mono); font-size: 0.82rem;
  background: rgba(255,255,255,0.06); padding: 2px 8px; border-radius: 4px;
}
.flow-diamond {
  background: var(--surface-dark); border: 2px solid var(--border-color);
  width: 120px; height: 120px;
  transform: rotate(45deg);
  display: flex; align-items: center; justify-content: center;
  margin: 20px auto;
  transition: all 0.4s; opacity: 0.4;
}
.flow-diamond.active { opacity: 1; border-color: var(--beacon-yellow); }
.flow-diamond .diamond-text {
  transform: rotate(-45deg);
  font-size: 0.85rem; font-weight: 600; text-align: center;
}

/* Flow arrows */
.flow-arrow {
  text-align: center; padding: 8px 0; color: var(--text-dim); font-size: 1.2rem;
  opacity: 0.3; transition: opacity 0.4s;
}
.flow-arrow.active { opacity: 1; }

/* ── Placeholder Resolution ── */
.placeholder { color: var(--beacon-yellow); font-weight: 600; }
.resolved { color: var(--current-teal); font-weight: 600; }

/* ── Architecture Diagram ── */
.arch-diagram {
  position: relative; padding: 40px 0;
}
.arch-layer {
  display: flex; align-items: center; justify-content: center;
  margin: 20px 0;
}
.arch-box {
  background: var(--surface-dark); border: 2px solid var(--border-color);
  border-radius: 14px; padding: 24px 32px;
  text-align: center; position: relative;
  min-width: 280px;
}
.arch-box .arch-label {
  font-family: var(--font-heading); font-weight: 600; font-size: 1rem;
  margin-bottom: 4px;
}
.arch-box .arch-sub {
  font-size: 0.8rem; color: var(--text-secondary);
}
.arch-box.app-layer { border-color: var(--buoy-orange); }
.arch-box.engine-layer { border-color: var(--beacon-yellow); }
.arch-box.server-layer { border-color: var(--ocean-blue); }

.arch-arrow {
  display: flex; flex-direction: column; align-items: center;
  padding: 12px 0; color: var(--text-dim);
}
.arch-arrow .arrow-label {
  font-size: 0.75rem; font-family: var(--font-mono); margin-bottom: 4px;
}
.arch-arrow svg { display: block; }

/* Animated dot traveling on arrows */
@keyframes flow-down {
  0% { transform: translateY(-10px); opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}
.flow-dot {
  width: 8px; height: 8px; border-radius: 50%;
  animation: flow-down 2s ease-in-out infinite;
}
.flow-dot.down { background: var(--buoy-orange); }
.flow-dot.up-teal { background: var(--current-teal); animation-delay: 0.5s; }
.flow-dot.down-blue { background: var(--ocean-blue); animation-delay: 1s; }

/* ── Annotations / Callouts ── */
.annotated-block { position: relative; }
.callout {
  position: absolute;
  background: var(--deep-navy); border: 1px solid var(--beacon-yellow);
  border-radius: 8px; padding: 8px 12px;
  font-size: 0.78rem; color: var(--beacon-yellow);
  max-width: 200px; line-height: 1.4;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.callout::before {
  content: ''; position: absolute;
  width: 12px; height: 12px;
  background: var(--deep-navy); border: 1px solid var(--beacon-yellow);
  border-right: none; border-top: none;
  transform: rotate(45deg);
}
.callout.left::before { right: -7px; top: 12px; }
.callout.right::before { left: -7px; top: 12px; }

/* ── Input Fields (for interactive model builder) ── */
.input-field {
  background: var(--surface-dark); border: 1px solid var(--border-color);
  border-radius: 8px; padding: 10px 14px;
  font-family: var(--font-mono); font-size: 0.88rem;
  color: var(--text-primary); width: 100%;
  transition: border-color 0.2s;
  outline: none;
}
.input-field:focus { border-color: var(--ocean-blue); }
.input-field::placeholder { color: var(--text-dim); }

.field-row {
  display: flex; gap: 12px; margin-bottom: 8px; align-items: center;
}
.field-row .input-field { flex: 1; }
.remove-field {
  background: none; border: none; color: var(--danger);
  font-size: 1.2rem; cursor: pointer; padding: 4px 8px;
  opacity: 0.5; transition: opacity 0.2s;
}
.remove-field:hover { opacity: 1; }

.add-field-btn {
  background: none; border: 1px dashed var(--border-color);
  color: var(--text-dim); border-radius: 8px;
  padding: 8px 16px; cursor: pointer; font-size: 0.82rem;
  width: 100%; transition: all 0.2s; font-family: var(--font-body);
}
.add-field-btn:hover { border-color: var(--ocean-blue); color: var(--ocean-blue); }

/* ── Animations ── */
@keyframes beacon-pulse {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(255, 224, 102, 0.3)); }
  50% { filter: drop-shadow(0 0 20px rgba(255, 224, 102, 0.6)); }
}

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

@keyframes slide-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes wave-float {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-20px); }
}

/* Scroll-triggered fade-in */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Staggered children */
.stagger > *:nth-child(1) { transition-delay: 0s; }
.stagger > *:nth-child(2) { transition-delay: 0.1s; }
.stagger > *:nth-child(3) { transition-delay: 0.2s; }
.stagger > *:nth-child(4) { transition-delay: 0.3s; }
.stagger > *:nth-child(5) { transition-delay: 0.4s; }
.stagger > *:nth-child(6) { transition-delay: 0.5s; }

/* Queue drain animation */
@keyframes fly-right {
  0% { transform: translateX(0); opacity: 1; }
  100% { transform: translateX(200px); opacity: 0; }
}
.drain { animation: fly-right 0.4s ease-in forwards; }

/* Badge sync transition */
@keyframes badge-sync {
  0% { background: rgba(255, 224, 102, 0.15); color: var(--beacon-yellow); }
  100% { background: rgba(0, 220, 198, 0.15); color: var(--current-teal); }
}
.badge-syncing { animation: badge-sync 0.6s ease-out forwards; }

/* ── Utility ── */
.text-center { text-align: center; }
.text-yellow { color: var(--beacon-yellow); }
.text-orange { color: var(--buoy-orange); }
.text-teal { color: var(--current-teal); }
.text-blue { color: var(--ocean-blue); }
.text-dim { color: var(--text-dim); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.gap-16 { gap: 16px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-24 { gap: 24px; }

/* ── Platform Selector ── */
.platform-selector {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 40px;
  background: rgba(15, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky; top: 60px; z-index: 95;
}
.platform-label {
  font-size: 0.8rem; font-weight: 500; color: var(--text-dim);
  margin-right: 4px;
}
.platform-btn {
  font-family: var(--font-body); font-size: 0.82rem; font-weight: 500;
  padding: 6px 16px; cursor: pointer;
  background: transparent; border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-dim); transition: all 0.2s;
}
.platform-btn:hover { color: var(--text-secondary); border-color: var(--text-dim); }
.platform-btn.active {
  background: var(--buoy-orange); border-color: var(--buoy-orange);
  color: var(--deep-navy); font-weight: 600;
}

/* Platform-conditional visibility */
[data-platform] { display: none; }
body.platform-android [data-platform~="android"] { display: block; }
body.platform-ios [data-platform~="ios"] { display: block; }
body.platform-jvm [data-platform~="jvm"] { display: block; }
/* inline variants for elements inside paragraphs / lists */
span[data-platform], code[data-platform] { display: none; }
body.platform-android span[data-platform~="android"],
body.platform-android code[data-platform~="android"] { display: inline; }
body.platform-ios span[data-platform~="ios"],
body.platform-ios code[data-platform~="ios"] { display: inline; }
body.platform-jvm span[data-platform~="jvm"],
body.platform-jvm code[data-platform~="jvm"] { display: inline; }
/* list-item variants */
li[data-platform] { display: none; }
body.platform-android li[data-platform~="android"] { display: list-item; }
body.platform-ios li[data-platform~="ios"] { display: list-item; }
body.platform-jvm li[data-platform~="jvm"] { display: list-item; }
/* tab-btn hiding for Hilt on non-Android */
body.platform-ios .hilt-only,
body.platform-jvm .hilt-only { display: none; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split-panel { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .site-header { padding: 0 20px; }
  .site-header nav { display: none; }
  .site-header nav.open {
    display: flex; flex-direction: column;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--deep-navy); border-bottom: 1px solid var(--border-color);
    padding: 16px 20px; gap: 12px;
  }
  .nav-toggle { display: block; }
  .hero { padding: 60px 20px 48px; }
  .hero h1 { font-size: 2.2rem; }
  .section { padding: 48px 20px; }
  .section-sm { padding: 32px 20px; }
  .card-grid, .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
  .step-bar { padding: 12px 16px; gap: 0; }
  .step-line { width: 24px; }
  .platform-selector { padding: 10px 16px; gap: 6px; }
  .platform-btn { font-size: 0.75rem; padding: 5px 12px; }
  .site-footer { padding: 32px 20px 24px; }
}