/* ============================================================
   MarKing Landing Page — Shared Stylesheet
   Extracted from index.html / index-en.html
   ============================================================ */

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

:root {
  --primary: #000000;
  --primary-hover: #333333;
  --bg: #ffffff;
  --bg-offset: #fafafa;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --text-main: #111111;
  --text-muted: #666666;
  --border: rgba(0, 0, 0, 0.08);
  --border-light: rgba(0, 0, 0, 0.04);
  --shadow-subtle: 0 2px 8px -2px rgba(0, 0, 0, 0.05), 0 1px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-float: 0 12px 32px -4px rgba(0, 0, 0, 0.08), 0 4px 16px -2px rgba(0, 0, 0, 0.04);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #ffffff;
    --primary-hover: #cccccc;
    --bg: #0a0a0a;
    --bg-offset: #111111;
    --bg-glass: rgba(10, 10, 10, 0.7);
    --text-main: #ffffff;
    --text-muted: #888888;
    --border: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
  }
}

/* === Base === */
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--text-main); color: var(--bg); }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.04em; line-height: 1.1; }
p { color: var(--text-muted); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

/* === Scroll Progress Bar === */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #a855f7);
  transform-origin: left center;
  transform: scaleX(0);
  z-index: 200;
  transition: transform 0.1s linear;
  pointer-events: none;
}

/* === Header & Navigation === */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s, border-color 0.3s;
}

header.scrolled {
  box-shadow: var(--shadow-subtle);
  border-bottom-color: var(--border);
}

nav { width: 100%; display: flex; justify-content: space-between; align-items: center; }

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.1rem;
}

.logo-icon { width: 28px; height: 28px; border-radius: 6px; }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--text-main);
  color: var(--bg) !important;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  border: 1px solid transparent;
  transition: opacity 0.2s;
}

.nav-cta:hover { opacity: 0.9; }

.lang-switch {
  border: 1px solid var(--border);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem !important;
  transition: all 0.2s;
}

.lang-switch:hover {
  background: var(--bg-offset);
  border-color: rgba(120, 120, 120, 0.3);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.mobile-menu-btn:hover { background: var(--bg-offset); }

/* === Hero Section === */
.hero {
  padding: 9rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 500px;
  background: radial-gradient(ellipse at top, rgba(79, 70, 229, 0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-offset);
  border: 1px solid var(--border);
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero h1 { font-size: 5rem; margin-bottom: 1.5rem; }

.hero h1 span {
  background: linear-gradient(to right, var(--text-main), #888);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle { font-size: 1.25rem; max-width: 600px; margin: 0 auto 3rem; }

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.cta-buttons { display: flex; gap: 1rem; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: var(--text-main);
  color: var(--bg);
  border: 1px solid transparent;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-float);
}

.btn-secondary {
  background: var(--bg);
  color: var(--text-main);
  border: 1px solid var(--border);
}

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

.hero-image-wrapper {
  margin-top: 5rem;
  position: relative;
  perspective: 1000px;
}

.hero-image-inner {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.15), 0 18px 36px -18px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 10;
}

.hero-image-inner img {
  width: 100%;
  display: block;
  border-radius: calc(var(--radius-lg) - 1px);
}

/* === Section Headers === */
.section-header { text-align: center; margin-bottom: 4rem; }
.section-title { font-size: 3rem; margin-bottom: 1.25rem; }

.section-subtitle {
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 auto;
  color: var(--text-muted);
}

.section-badge {
  display: inline-block;
  background: var(--bg-offset);
  border: 1px solid var(--border);
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* === Features Bento Grid === */
.features { padding: 6rem 0; }

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.bento-item {
  background: var(--bg-offset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.bento-item:hover {
  border-color: rgba(120, 120, 120, 0.3);
  box-shadow: var(--shadow-subtle);
}

.bento-icon {
  width: 48px; height: 48px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.bento-icon svg { width: 24px; height: 24px; color: var(--text-main); }
.bento-item h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }
.bento-item p { font-size: 0.95rem; }

.bento-wide   { grid-column: span 8; }
.bento-square { grid-column: span 4; }
.bento-half   { grid-column: span 6; }
.bento-third  { grid-column: span 4; }

/* Feature NEW tag */
.feature-tag {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.5rem;
  line-height: 1.4;
}

.feature-tag-new {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
}

.feature-tag-hot {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
}

/* === Use Cases === */
.use-cases { padding: 6rem 0; }

.use-case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 6rem;
}

.use-case-row.reverse { direction: rtl; }
.use-case-row.reverse > * { direction: ltr; }

.use-case-img {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-subtle);
  overflow: hidden;
}

.use-case-img img { width: 100%; display: block; border-radius: var(--radius-md); }
.use-case-content h3 { font-size: 2rem; margin-bottom: 1rem; }
.use-case-desc { font-size: 1.1rem; margin-bottom: 2rem; }

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.check-list svg { width: 20px; height: 20px; color: var(--text-main); flex-shrink: 0; }

/* === Screenshots Carousel === */
.screenshots { padding: 6rem 0; }

.screenshot-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-float);
  margin-top: 3rem;
  background: var(--bg-offset);
}

.carousel-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  touch-action: pan-y;
}

.screenshot-item {
  min-width: 100%; max-width: 100%; width: 100%; flex: 0 0 100%;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-sizing: border-box;
}

.screenshot-item img {
  max-width: 100%;
  max-height: 600px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  border: 1px solid var(--border-light);
  margin: 0 auto;
  display: block;
}

.screenshot-caption { margin-top: 2.5rem; text-align: center; }
.screenshot-caption h4 {
  font-size: 1.25rem; font-weight: 600;
  margin-bottom: 0.5rem; color: var(--text-main);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1.5rem;
  border-top: 1px solid var(--border-light);
  background: var(--bg);
}

.carousel-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--bg-offset);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
}

.carousel-btn:hover { background: var(--text-main); color: var(--bg); }
.carousel-dots { display: flex; gap: 0.5rem; }

.carousel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all 0.2s;
}

.carousel-dot.active { background: var(--text-main); transform: scale(1.2); }

/* === Theme Showcase === */
.theme-showcase {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-offset) 100%);
  padding-bottom: 8rem;
  position: relative;
}

.theme-gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-top: 4rem;
}

.theme-item {
  position: relative;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg);
  border: 1px solid var(--border-light);
  cursor: default;
  aspect-ratio: 16 / 10;
}

.theme-item.tall { aspect-ratio: auto; height: 100%; }

.theme-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.2);
  border-color: var(--primary);
  z-index: 10;
}

.theme-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-item:hover .theme-img { transform: scale(1.05); }

.theme-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 40%, rgba(0,0,0,0) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.theme-item:hover .theme-overlay { opacity: 1; }

.theme-title {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  transform: translateY(15px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-desc {
  color: rgba(255,255,255,0.8);
  font-size: 0.9375rem;
  margin: 0;
  transform: translateY(15px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 0.05s;
}

.theme-item:hover .theme-title,
.theme-item:hover .theme-desc { transform: translateY(0); }

.t-large { grid-column: span 8; }
.t-small { grid-column: span 4; }
.t-half  { grid-column: span 6; }

/* === Download Section === */
.download { padding: 6rem 0; }

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.platform-card {
  background: var(--bg-offset);
  padding: 3rem 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.2s;
  position: relative;
}

.platform-card:hover:not(.platform-coming-soon) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-subtle);
  border-color: rgba(120, 120, 120, 0.3);
}

.platform-coming-soon { opacity: 0.6; }

.coming-soon-badge {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: var(--border);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.platform-icon { width: 48px; height: 48px; margin: 0 auto 1.5rem; color: var(--text-main); }
.platform-card h3 { color: var(--text-main); }
.platform-version { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 2rem; }

/* === Sponsor Section === */
.sponsor { padding: 6rem 0; border-top: 1px solid var(--border-light); }

.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.sponsor-card {
  background: var(--bg-offset);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.2s;
  display: block;
}

.sponsor-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-subtle);
  border-color: rgba(120, 120, 120, 0.3);
}

.sponsor-icon {
  width: 48px; height: 48px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  color: white;
}

.sponsor-card h3 { color: var(--text-main); }

.sponsor-note {
  text-align: center;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* === Footer === */
footer {
  padding: 5rem 0 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-offset);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-section h4 { font-size: 0.95rem; margin-bottom: 1.5rem; color: var(--text-main); }

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links a { color: var(--text-muted); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-main); }

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  z-index: 99;
  box-shadow: var(--shadow-float);
}

.back-to-top.visible { opacity: 1; pointer-events: auto; }

.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--text-main);
  color: var(--bg);
}

/* === Download Modal === */
.download-modal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.download-modal-overlay.active { opacity: 1; pointer-events: auto; }

.download-modal-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 90%; max-width: 480px;
  box-shadow: var(--shadow-float);
  padding: 2.5rem 2rem;
  transform: scale(0.96) translateY(10px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.download-modal-overlay.active .download-modal-content {
  transform: scale(1) translateY(0);
}

.download-modal-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-modal-close:hover { background: var(--bg-offset); color: var(--text-main); }

.modal-header { text-align: center; margin-bottom: 2rem; }
.modal-header h3 { font-size: 1.5rem; margin-bottom: 0.5rem; color: var(--text-main); }
.modal-header p { font-size: 0.9rem; color: var(--text-muted); }

.modal-tabs {
  display: flex;
  background: var(--bg-offset);
  padding: 0.3rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-light);
}

.modal-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.6rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.modal-tab.active {
  background: var(--bg);
  color: var(--text-main);
  box-shadow: var(--shadow-subtle);
}

.modal-panels { margin-bottom: 1.5rem; min-height: 200px; }
.modal-panel { display: none; animation: fadeIn 0.3s ease; }
.modal-panel.active { display: block; }

.download-list { display: flex; flex-direction: column; gap: 0.75rem; }

.download-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  background: var(--bg-offset);
}

.download-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-subtle);
  background: var(--bg);
}

.dl-info { display: flex; flex-direction: column; gap: 0.2rem; }

.dl-name {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
}

.dl-desc { font-size: 0.8rem; color: var(--text-muted); }

.dl-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--border-light);
  color: var(--text-main);
  transition: all 0.2s;
  flex-shrink: 0;
}

.download-item:hover .dl-action { background: var(--text-main); color: var(--bg); }

.modal-footer {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.view-all-releases {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.2s;
  text-decoration: none;
  display: inline-block;
}

.view-all-releases:hover { color: var(--text-main); }

.dl-tag {
  font-size: 0.65rem;
  padding: 0.1rem 0.4rem;
  background: var(--border);
  color: var(--text-main);
  border-radius: 4px;
  margin-left: 0.5rem;
  font-weight: 600;
  text-transform: uppercase;
}

.dl-tag.recommended { background: var(--text-main); color: var(--bg); }

.dl-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--text-muted);
}

.dl-spinner {
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
  width: 24px; height: 24px;
}

.dl-error { text-align: center; padding: 2rem 0; color: #ef4444; font-size: 0.9rem; }

.dl-retry {
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  cursor: pointer;
  color: var(--text-main);
  flex-shrink: 0;
}

.dl-retry:hover { background: var(--bg-offset); }

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Scroll-triggered reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress { display: none; }
}

/* === Responsive: Tablet (≤1024px) === */
@media (max-width: 1024px) {
  .t-large, .t-half { grid-column: span 12; }
  .t-small { grid-column: span 6; aspect-ratio: 16 / 11; }
}

/* === Responsive: Mobile (≤900px) === */
@media (max-width: 900px) {
  .container { padding: 0 1.25rem; }

  .hero { padding: 6rem 0 3rem; }
  .hero h1 { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.1rem; margin-bottom: 2rem; }
  .hero-image-wrapper { margin-top: 3rem; }
  .hero-stats { gap: 2rem; margin-bottom: 2rem; }
  .hero-stat-value { font-size: 1.25rem; }

  .cta-buttons { flex-direction: column; gap: 1rem; }
  .cta-buttons .btn { width: 100%; justify-content: center; }

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    margin-bottom: 1.5rem;
    white-space: normal;
    line-height: 1.4;
  }

  .features, .use-cases, .screenshots, .download, .sponsor { padding: 3rem 0; }

  .section-header { margin-bottom: 2.5rem; }
  .section-title { font-size: 2rem; }

  .bento-item { padding: 1.5rem; }
  .bento-wide, .bento-square, .bento-half, .bento-third { grid-column: span 12; }
  .bento-grid { gap: 1rem; }

  .use-case-row { grid-template-columns: 1fr; gap: 2rem; margin-top: 3rem; }
  .use-case-content h3 { font-size: 1.5rem; }
  .use-case-row.reverse { direction: ltr; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1rem 1.25rem 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-float);
  }

  .nav-links.active { display: flex; }
  .mobile-menu-btn { display: block; }

  .screenshot-item { padding: 1.5rem 0.5rem; }
  .screenshot-item img { max-height: 400px; }

  footer { padding: 3rem 0 1.5rem; }
  .footer-grid { gap: 1.5rem; margin-bottom: 2rem; }

  .download-modal-content { padding: 1.5rem; width: 95%; }
  .modal-header h3 { font-size: 1.25rem; }

  .theme-showcase { padding-bottom: 4rem; }
  .theme-gallery { gap: 1rem; }
}

/* === Responsive: Small Mobile (≤640px) === */
@media (max-width: 640px) {
  .t-small { grid-column: span 12; }
  .theme-gallery { gap: 0.75rem; }
  .theme-overlay { padding: 1rem; }
  .theme-title { font-size: 1rem; }
  .theme-desc { font-size: 0.8rem; }

  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.75rem; }

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

  .carousel-controls { gap: 1rem; padding: 1rem; }
  .carousel-btn { width: 36px; height: 36px; }
  .carousel-dot { width: 6px; height: 6px; }

  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }

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