/* ============================================================
   site.css
   ============================================================ */

body {
  overflow-x: hidden;
  font-size: 15px;
}

.promo-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

.promo-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: color-mix(in srgb, var(--bg-color) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.promo-nav .promo-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.promo-brand {
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.promo-brand img {
  width: 48px;
  height: 48px;
  border-radius: 5px;
  flex-shrink: 0;
}

.promo-nav-links {
  display: flex;
  gap: 20px;
  font-size: 12.5px;
  color: var(--text-muted);
}

.promo-nav-links a:hover {
  color: var(--text-main);
}

.promo-nav .btn-primary {
  padding: 7px 14px;
  font-size: 0.8rem;
}

@media (max-width: 720px) {
  .promo-nav-links { display: none; }
}

.promo-hero {
  padding: 44px 0 40px;
}

.promo-hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 32px;
  align-items: center;
}

@media (max-width: 900px) {
  .promo-hero-grid { grid-template-columns: 1fr; }
}

.promo-eyebrow {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 7px;
}

.promo-eyebrow .live-dot { margin: 0; width: 6px; height: 6px; }

.promo-hero h1 {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.12;
  font-weight: 800;
  margin: 10px 0 12px;
  letter-spacing: -0.4px;
}

.promo-hero h1 .accent {
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.promo-lede {
  color: var(--text-muted);
  font-size: 13.5px;
  max-width: 46ch;
  margin-bottom: 18px;
  line-height: 1.55;
}

.promo-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.btn-primary,
.btn-outline {
  font-size: 0.82rem;
  padding: 9px 16px;
  border-radius: var(--radius-md);
}

.btn-outline {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-weight: 700;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  background-color: rgba(255, 255, 255, 0.04);
}

.promo-platform-strip {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.promo-platform-strip span {
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.hero-shot {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  line-height: 0;
}

.hero-shot img {
  width: 100%;
  display: block;
}


.promo-section {
  padding: 44px 0;
  border-top: 1px solid var(--border-color);
}

.promo-section-head {
  max-width: 58ch;
  margin-bottom: 24px;
}

.promo-section-head h2 {
  font-size: clamp(19px, 2.4vw, 24px);
  margin-top: 6px;
  font-weight: 800;
  letter-spacing: -0.2px;
}

.promo-section-head p {
  color: var(--text-muted);
  margin-top: 8px;
  font-size: 13px;
}


.screens-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 640px) {
  .screens-grid { grid-template-columns: 1fr; }
}

.screen-tile {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--card-bg);
}

.screen-tile img {
  width: 100%;
  display: block;
}

.screen-tile .screen-caption {
  padding: 8px 10px;
  font-size: 11.5px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

.screen-tile .screen-caption strong {
  color: var(--text-main);
}


.chapters {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

@media (max-width: 760px) {
  .chapters { grid-template-columns: 1fr; }
}

.chapter {
  background-color: var(--bg-color);
  padding: 16px;
  transition: background-color var(--transition);
}

.chapter:hover {
  background-color: var(--card-bg);
}

.chapter .chapter-tag {
  display: inline-block;
  margin-bottom: 8px;
}

.chapter h3 {
  font-size: 14.5px;
  font-weight: 700;
  margin-bottom: 5px;
}

.chapter p {
  font-size: 12.5px;
  color: var(--text-muted);
}

.chapter ul {
  margin-top: 8px;
  padding-left: 0;
  list-style: none;
}

.chapter li {
  font-size: 12px;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  margin-bottom: 4px;
}

.chapter li::before {
  content: '\203A';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}


.overlay-picker-frame {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-color);
  max-width: 520px;
}

.overlay-picker-frame .overlay-style-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 8px;
}

.overlay-picker-frame .overlay-style-tile {
  padding: 7px 7px 6px;
}

.overlay-picker-frame .tile-preview {
  height: 32px;
  margin-bottom: 5px;
}

.overlay-picker-frame .tile-name {
  font-size: 0.7rem;
}

.overlay-picker-frame .tile-desc {
  font-size: 0.6rem;
}

@media (max-width: 640px) {
  .overlay-picker-frame .overlay-style-grid { grid-template-columns: repeat(2, 1fr); }
}


.promo-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background-color: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

@media (max-width: 820px) {
  .promo-split { grid-template-columns: 1fr; }
}

.promo-split > div {
  background-color: var(--bg-color);
  padding: 18px;
}

.promo-split h3 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}

.stack-row {
  display: flex;
  justify-content: space-between;
  padding: 7px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
}

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

.stack-row .layer {
  color: var(--text-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stack-row .tech { color: var(--text-main); }

.checklist {
  list-style: none;
}

.checklist li {
  display: flex;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-muted);
}

.checklist li:last-child { border-bottom: none; }

.check-mark {
  flex-shrink: 0;
  width: 13px;
  height: 13px;
  margin-top: 1px;
  border: 1px solid var(--accent-green);
  border-radius: 3px;
  position: relative;
}

.check-mark::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 2px;
  width: 3.5px;
  height: 6px;
  border-right: 1.5px solid var(--accent-green);
  border-bottom: 1.5px solid var(--accent-green);
  transform: rotate(45deg);
}


.contribute-panel {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  align-items: center;
}

@media (max-width: 820px) {
  .contribute-panel { grid-template-columns: 1fr; }
}

.contribute-panel h3 {
  font-size: 15.5px;
  margin-bottom: 6px;
  font-weight: 800;
}

.contribute-panel p {
  color: var(--text-muted);
  font-size: 12.5px;
  margin-bottom: 12px;
}

.flow {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11.5px;
  color: var(--text-muted);
}

.flow-step {
  display: flex;
  gap: 8px;
  align-items: center;
}

.flow-step .idx { color: var(--accent-green); }


.promo-footer {
  padding: 24px 0 32px;
  border-top: 1px solid var(--border-color);
}

.promo-footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.promo-footer-links {
  display: flex;
  gap: 16px;
}

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

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

  .lightbox-modal {
    display: flex;
    visibility: hidden;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    align-items: center;
    justify-content: center;
  }
  .lightbox-modal.show {
    visibility: visible;
    opacity: 1;
  }
  .lightbox-content {
    max-width: 90%;
    max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }
  .lightbox-modal.show .lightbox-content {
    transform: scale(1);
  }
  .lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
  }
  .lightbox-close:hover {
    color: white;
  }
  .screen-tile img {
    cursor: zoom-in;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .screen-tile img:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  }