/* ═══════════════════════════════════════════════════════════════════════════
   style.css — VideoDown  |  Professional SaaS UI  |  Dark / Light
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
button, input, select { font-family: inherit; }
a { text-decoration: none; color: inherit; }

/* ── Dark Theme Tokens ──────────────────────────────────────────────────── */
:root, [data-theme="dark"] {
  --bg:           #0a0a0f;
  --bg-2:         #0f0f18;
  --bg-3:         #13131f;
  --surface:      rgba(255,255,255,0.04);
  --surface-2:    rgba(255,255,255,0.07);
  --surface-3:    rgba(255,255,255,0.10);
  --border:       rgba(255,255,255,0.08);
  --border-2:     rgba(255,255,255,0.14);

  --primary:      #6366f1;
  --primary-h:    #4f46e5;
  --primary-glow: rgba(99,102,241,0.35);
  --purple:       #a855f7;
  --cyan:         #06b6d4;
  --green:        #10b981;
  --red:          #ef4444;
  --amber:        #f59e0b;

  --text:         #f1f5f9;
  --text-2:       #94a3b8;
  --text-3:       #64748b;

  --glass-bg:     rgba(15,15,28,0.75);
  --glass-border: rgba(255,255,255,0.09);
  --shadow:       0 8px 40px rgba(0,0,0,0.55);
  --shadow-sm:    0 2px 12px rgba(0,0,0,0.40);

  --font: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --ease: 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Light Theme Tokens ─────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:           #f8fafc;
  --bg-2:         #f1f5f9;
  --bg-3:         #e2e8f0;
  --surface:      rgba(0,0,0,0.03);
  --surface-2:    rgba(0,0,0,0.05);
  --surface-3:    rgba(0,0,0,0.08);
  --border:       rgba(0,0,0,0.08);
  --border-2:     rgba(0,0,0,0.14);

  --text:         #0f172a;
  --text-2:       #475569;
  --text-3:       #94a3b8;

  --glass-bg:     rgba(255,255,255,0.82);
  --glass-border: rgba(0,0,0,0.08);
  --shadow:       0 8px 40px rgba(0,0,0,0.12);
  --shadow-sm:    0 2px 12px rgba(0,0,0,0.08);
}

/* ── Base ───────────────────────────────────────────────────────────────── */
body {
  font-family: var(--font);
  background:  var(--bg);
  color:       var(--text);
  min-height:  100vh;
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hidden { display: none !important; }

/* ── Gradient text ──────────────────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 50%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ══════════════════════════════════════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  /* Always opaque — prevents page content from leaking through on scroll */
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: background var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.navbar.scrolled {
  background: var(--bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.brand-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.45);
  transition: transform 0.25s ease;
}
.nav-logo:hover .brand-logo-img {
  transform: scale(1.08);
}
.logo-mark {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  box-shadow: 0 0 16px var(--primary-glow);
}
.logo-text {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}
.nav-link {
  padding: 0.45rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--radius-xs);
  transition: color var(--ease), background var(--ease);
}
.nav-link:hover { color: var(--text); background: var(--surface-2); }

/* Nav actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

/* API badge */
.api-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
  white-space: nowrap;
}
.api-badge--ok  { background: rgba(16,185,129,0.15); color: var(--green); border: 1px solid rgba(16,185,129,0.25); }
.api-badge--err { background: rgba(239,68,68,0.12);  color: var(--red);   border: 1px solid rgba(239,68,68,0.2); }

/* Theme toggle */
.theme-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--ease), border-color var(--ease);
  position: relative;
  overflow: hidden;
}
.theme-btn:hover { background: var(--surface-2); border-color: var(--border-2); }
.theme-icon { position: absolute; transition: transform 0.3s ease, opacity 0.3s ease; font-size: 1rem; }
.theme-icon--light { opacity: 0; transform: translateY(10px); }
[data-theme="light"] .theme-icon--dark  { opacity: 0; transform: translateY(-10px); }
[data-theme="light"] .theme-icon--light { opacity: 1; transform: translateY(0); }

/* CTA button in nav */
.btn-nav-cta {
  padding: 0.45rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  color: #fff;
  cursor: pointer;
  transition: opacity var(--ease), box-shadow var(--ease);
  box-shadow: 0 0 18px var(--primary-glow);
}
.btn-nav-cta:hover { opacity: 0.88; box-shadow: 0 0 28px var(--primary-glow); }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px; height: 38px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  cursor: pointer;
  padding: 8px;
}
.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav-drawer {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  flex-direction: column;
  padding: 0.75rem 1.5rem 1.25rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transform: translateY(-8px);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-drawer.open { transform: translateY(0); opacity: 1; }
.nav-drawer-link {
  padding: 0.75rem 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  transition: color var(--ease);
}
.nav-drawer-link:last-child { border-bottom: none; }
.nav-drawer-link:hover { color: var(--text); }

/* ══════════════════════════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 160px 1.5rem 100px;
  text-align: center;
}

/* Ambient glow orbs */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  -webkit-filter: blur(80px);
  transform: translateZ(0); /* Fix iOS Safari black box bug */
  will-change: transform;
  opacity: 0.35;
}
.hero-glow--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  top: -200px; left: 50%;
  transform: translateX(-50%);
}
.hero-glow--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--purple) 0%, transparent 70%);
  bottom: -100px; right: 10%;
  opacity: 0.2;
}
[data-theme="light"] .hero-glow { opacity: 0.15; }

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 99px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 8px var(--green); }
  50%       { box-shadow: 0 0 16px var(--green), 0 0 24px rgba(16,185,129,0.4); }
}

/* Title */
.hero-title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  color: var(--text);
}

/* Subtitle */
.hero-sub {
  max-width: 560px;
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.75;
}

/* URL search bar */
.hero-search {
  width: 100%;
  max-width: 680px;
  display: flex;
  gap: 0.75rem;
  align-items: stretch;
}
.hero-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0 0.5rem 0 1rem;
  gap: 0.5rem;
  transition: border-color var(--ease), box-shadow var(--ease);
}
.hero-input-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99,102,241,0.18);
}
.search-icon { color: var(--text-3); flex-shrink: 0; }
.hero-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 1rem 0;
  font-size: 1rem; /* Prevent iOS zoom on focus */
  color: var(--text);
  -webkit-appearance: none;
}
.hero-input::placeholder { color: var(--text-3); }

.btn-paste {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-2);
  background: var(--surface-3);
  color: var(--text-2);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--ease), color var(--ease);
  flex-shrink: 0;
}
.btn-paste:hover { background: var(--border-2); color: var(--text); }

.btn-hero-dl {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1.5rem;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 4px 24px var(--primary-glow);
  transition: opacity var(--ease), box-shadow var(--ease), transform var(--ease);
  min-height: 52px;
}
.btn-hero-dl:hover  { opacity: 0.9; box-shadow: 0 6px 32px var(--primary-glow); }
.btn-hero-dl:active { transform: scale(0.97); }
.btn-hero-dl:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-arrow { transition: transform 0.2s ease; }
.btn-hero-dl:hover .btn-arrow { transform: translateX(3px); }

/* Hero error */
.hero-error {
  font-size: 0.875rem;
  color: var(--red);
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: var(--radius-xs);
  padding: 0.6rem 1rem;
  width: 100%;
  max-width: 680px;
  text-align: left;
}

/* Stat pills row */
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}
.stat-pill {
  padding: 0.35rem 1rem;
  border-radius: 99px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-2);
}
.stat-pill strong { color: var(--text); font-weight: 700; }

/* ══════════════════════════════════════════════════════════════════════════
   GLASS CARD  (shared base for all downloader cards)
   ══════════════════════════════════════════════════════════════════════════ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  transition: box-shadow var(--ease);
}

/* ── Download info card ─────────────────────────────────────────────────── */
.dl-card { max-width: 780px; margin: 0 auto; animation: slideUp 0.35s ease; }

.dl-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.dl-platform-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 99px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-2);
}

/* Video preview row */
.video-preview-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.thumb-box {
  position: relative;
  flex-shrink: 0;
  width: 220px;
  aspect-ratio: 16/9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.thumb-img { width: 100%; height: 100%; object-fit: cover; }
.thumb-duration {
  position: absolute;
  bottom: 6px; right: 6px;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(0,0,0,0.78);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.thumb-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--ease);
}
.thumb-box:hover .thumb-play-overlay { opacity: 1; }

/* Video text info */
.video-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.video-title-text {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-uploader-text { font-size: 0.8125rem; color: var(--text-2); }
.video-size-text     { font-size: 0.8125rem; color: var(--text-3); }

/* Resolution radio pills */
.resolution-group { display: flex; flex-direction: column; gap: 0.45rem; margin-top: 0.25rem; }
.res-label { font-size: 0.75rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.07em; }
.res-pills { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.res-pill {
  position: relative;
  cursor: pointer;
}
.res-pill input { position: absolute; opacity: 0; width: 0; height: 0; }
.res-pill span {
  display: block;
  padding: 0.32rem 0.85rem;
  border-radius: 99px;
  border: 1.5px solid var(--border-2);
  background: var(--surface);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-2);
  transition: all var(--ease);
  user-select: none;
}
.res-pill input:checked + span {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 12px rgba(99,102,241,0.4);
}
.res-pill:hover span { border-color: var(--primary); color: var(--text); }

/* Save dir row */
.save-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}
.save-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-2);
  white-space: nowrap;
  flex-shrink: 0;
}
.save-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 0.8125rem;
  color: var(--text);
  font-family: 'Courier New', monospace;
  min-width: 0;
}
.save-input::placeholder { color: var(--text-3); }

/* Action buttons */
.dl-actions { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }

.btn-download {
  flex: 1;
  min-width: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px var(--primary-glow);
  transition: opacity var(--ease), transform var(--ease), box-shadow var(--ease);
}
.btn-download:hover  { opacity: 0.9; box-shadow: 0 6px 28px var(--primary-glow); }
.btn-download:active { transform: scale(0.97); }
.btn-download:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-outline-sm {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-2);
  background: transparent;
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
  white-space: nowrap;
}
.btn-outline-sm:hover { background: var(--surface-2); color: var(--text); border-color: var(--border-2); }

.btn-icon-ghost {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-3);
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
  flex-shrink: 0;
}
.btn-icon-ghost:hover { background: var(--surface-2); color: var(--text); }

/* ══════════════════════════════════════════════════════════════════════════
   PROGRESS CARD
   ══════════════════════════════════════════════════════════════════════════ */
.progress-card { max-width: 780px; margin: 0 auto; animation: slideUp 0.3s ease; }

.progress-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.progress-status-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  animation: pulse-dot 1.4s ease-in-out infinite;
}
.progress-status-dot.done  { background: var(--green); animation: none; }
.progress-status-dot.error { background: var(--red);   animation: none; }
.progress-status-text {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
}

/* Progress bar */
.progress-track-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.progress-track {
  flex: 1;
  height: 8px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--purple));
  border-radius: 99px;
  transition: width 0.4s ease;
  position: relative;
  overflow: hidden;
  min-width: 0;
}
.progress-fill::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  animation: shimmer 1.6s infinite;
}
.progress-fill.indeterminate {
  width: 40% !important;
  animation: indeterminate 1.5s ease-in-out infinite;
}
.progress-fill.indeterminate::after { display: none; }
.progress-pct {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  min-width: 44px;
  text-align: right;
}

/* Stats row */
.progress-meta-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}
.prog-meta-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.prog-meta-item--wide { grid-column: span 1; }
.prog-meta-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
}
.prog-meta-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}
.progress-filename {
  font-size: 0.8rem;
  color: var(--text-3);
  word-break: break-all;
  line-height: 1.5;
}

/* ══════════════════════════════════════════════════════════════════════════
   RESULT CARDS (success / error)
   ══════════════════════════════════════════════════════════════════════════ */
.result-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  animation: slideUp 0.35s ease;
}

/* Icon circles */
.result-icon-wrap { display: flex; justify-content: center; margin-bottom: 1.25rem; }
.result-check-circle, .result-x-circle {
  width: 72px; height: 72px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.result-check-circle {
  background: rgba(16,185,129,0.12);
  border: 2px solid rgba(16,185,129,0.3);
  color: var(--green);
  animation: pop-in 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.result-x-circle {
  background: rgba(239,68,68,0.10);
  border: 2px solid rgba(239,68,68,0.25);
  color: var(--red);
  animation: pop-in 0.4s cubic-bezier(0.34,1.56,0.64,1);
}

.result-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text);
}
.result-card--success .result-title { color: var(--green); }
.result-card--error   .result-title { color: var(--red); }
.result-sub { font-size: 0.9rem; color: var(--text-2); margin-bottom: 1.5rem; }

/* File info table */
.result-file-info {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  text-align: left;
}
.file-info-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
}
.file-info-row:last-child { border-bottom: none; }
.fi-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  min-width: 68px;
  flex-shrink: 0;
}
.fi-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}
.fi-path {
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: help;
}

/* Result action buttons */
.result-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px var(--primary-glow);
  transition: opacity var(--ease), transform var(--ease);
}
.btn-primary:hover  { opacity: 0.88; }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-2);
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.btn-secondary:hover { background: var(--surface-3); color: var(--text); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-2);
  background: transparent;
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}
.btn-outline:hover { background: var(--surface-2); color: var(--text); }

/* Spinner */
.spinner {
  width: 16px; height: 16px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════════════
   SECTION LAYOUTS
   ══════════════════════════════════════════════════════════════════════════ */
.section-wrap {
  padding: 100px 0;
}
.section-wrap--alt {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.85rem;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}
.section-sub {
  font-size: 1.0625rem;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto;
}

/* ── Platforms grid ─────────────────────────────────────────────────────── */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}

.platform-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  text-align: center;
  cursor: default;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
  border-color: var(--border-2);
}

.platform-icon-wrap {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--p-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--p-color) 25%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--p-color);
  padding: 12px;
  transition: transform var(--ease), box-shadow var(--ease);
}
.platform-card:hover .platform-icon-wrap {
  transform: scale(1.08);
  box-shadow: 0 0 20px color-mix(in srgb, var(--p-color) 30%, transparent);
}
.platform-name { font-size: 0.875rem; font-weight: 600; color: var(--text); }
.platform-quality { font-size: 0.72rem; color: var(--text-3); }

/* ── Features grid ──────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  border-color: var(--border-2);
}

.feature-icon-wrap {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--f-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--f-color) 22%, transparent);
  color: var(--f-color);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.1rem;
}
.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.feature-desc { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; }

/* ══════════════════════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 3.5rem 1.5rem 2rem;
}
.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  flex-wrap: wrap;
}
.footer-brand { flex: 1; min-width: 200px; }
.footer-logo  { margin-bottom: 0.85rem; }
.footer-tagline { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; max-width: 240px; }

.footer-links-group { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
  margin-bottom: 0.2rem;
}
.footer-link {
  font-size: 0.875rem;
  color: var(--text-2);
  transition: color var(--ease);
}
.footer-link:hover { color: var(--primary); }

.footer-bottom {
  max-width: 1140px;
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-copy, .footer-powered { font-size: 0.8125rem; color: var(--text-3); }
.footer-powered strong { color: var(--text-2); }

/* ══════════════════════════════════════════════════════════════════════════
   REVEAL ANIMATION  (scroll-triggered via JS)
   ══════════════════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Stagger children */
.features-grid  .feature-card:nth-child(2)  { transition-delay: 0.07s; }
.features-grid  .feature-card:nth-child(3)  { transition-delay: 0.14s; }
.features-grid  .feature-card:nth-child(4)  { transition-delay: 0.07s; }
.features-grid  .feature-card:nth-child(5)  { transition-delay: 0.14s; }
.features-grid  .feature-card:nth-child(6)  { transition-delay: 0.21s; }
.platforms-grid .platform-card:nth-child(2) { transition-delay: 0.05s; }
.platforms-grid .platform-card:nth-child(3) { transition-delay: 0.10s; }
.platforms-grid .platform-card:nth-child(4) { transition-delay: 0.15s; }
.platforms-grid .platform-card:nth-child(5) { transition-delay: 0.20s; }
.platforms-grid .platform-card:nth-child(6) { transition-delay: 0.25s; }

/* ══════════════════════════════════════════════════════════════════════════
   KEYFRAMES
   ══════════════════════════════════════════════════════════════════════════ */
@keyframes spin        { to { transform: rotate(360deg); } }
@keyframes shimmer     { 0% { transform: translateX(-100%); } 100% { transform: translateX(200%); } }
@keyframes slideUp     { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pop-in      { from { opacity: 0; transform: scale(0.7); } to { opacity: 1; transform: scale(1); } }
@keyframes fadeIn      { from { opacity: 0; } to { opacity: 1; } }
@keyframes indeterminate {
  0%   { margin-left: -40%; width: 40%; }
  50%  { margin-left: 30%;  width: 55%; }
  100% { margin-left: 100%; width: 40%; }
}

/* ══════════════════════════════════════════════════════════════════════════
   FOCUS & ACCESSIBILITY
   ══════════════════════════════════════════════════════════════════════════ */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}
* { -webkit-tap-highlight-color: transparent; }
button, a, [role="button"] { touch-action: manipulation; }

/* ══════════════════════════════════════════════════════════════════════════
   SCROLLBAR
   ══════════════════════════════════════════════════════════════════════════ */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (< 1024px)
   ══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1023px) {
  .platforms-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid  { grid-template-columns: repeat(2, 1fr); }
  .nav-links, .btn-nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav-drawer    { display: flex; }
  .progress-meta-row { grid-template-columns: repeat(2, 1fr); }
}

/* ══════════════════════════════════════════════════════════════════════════
/* ══════════════════════════════════════════════════════════════════════════
   QUICK PLATFORMS (Mobile Stories / Carousel)
   ══════════════════════════════════════════════════════════════════════════ */
.quick-platforms {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0.25rem 0.75rem;
  margin: 1.25rem 0 0.25rem;
  max-width: 100%;
}
.quick-platforms::-webkit-scrollbar { display: none; }
.qp-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
  user-select: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: transform 0.18s var(--ease), background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.qp-chip:active {
  transform: scale(0.93);
}
.qp-chip:hover {
  background: var(--surface-2);
  border-color: var(--border-2);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  transform: translateY(-1px);
}
.qp-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--qp-col);
}
.qp-icon svg { width: 16px; height: 16px; }

/* ══════════════════════════════════════════════════════════════════════════
   MOBILE BOTTOM NAVIGATION BAR (Native App Tab Bar)
   ══════════════════════════════════════════════════════════════════════════ */
.mobile-bottom-nav {
  display: none;
}

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (< 1024px)
   ══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1023px) {
  .platforms-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid  { grid-template-columns: repeat(2, 1fr); }
  .nav-links, .btn-nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav-drawer    { display: flex; }
  .progress-meta-row { grid-template-columns: repeat(2, 1fr); }
}

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile Phone App Shell (< 768px)
   ══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  body {
    padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  }

  /* ── Native Mobile App Header ────────────────────────────────────────── */
  .navbar {
    background: rgba(10, 10, 15, 0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  [data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.90);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }
  .nav-inner {
    height: 56px;
    padding: 0 1rem;
    gap: 0.5rem;
  }
  .nav-hamburger, .nav-drawer {
    display: none !important; /* Replaced by bottom nav */
  }
  .logo-text { font-size: 1.05rem; font-weight: 800; letter-spacing: -0.3px; }
  .api-badge {
    padding: 0.22rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 999px;
  }
  .theme-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
  }

  /* ── Hero Section (App Card Layout) ──────────────────────────────────── */
  .hero-glow { display: none; }
  .hero {
    padding: 80px 1rem 36px;
    padding-top: calc(76px + env(safe-area-inset-top, 0px));
  }
  .hero-badge {
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
  }
  .hero-title {
    font-size: 1.95rem;
    line-height: 1.22;
    letter-spacing: -0.6px;
    margin-bottom: 0.6rem;
  }
  .hero-sub {
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
  }

  /* ── Search Input (App-style floating bar) ────────────────────────────── */
  .hero-search {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }
  .hero-input-wrap {
    padding: 0.35rem 0.6rem 0.35rem 1rem;
    border-radius: 16px;
    background: var(--surface-2);
    border: 1.5px solid var(--border-2);
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    min-height: 54px;
  }
  .hero-input-wrap:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
  }
  .hero-input {
    font-size: 0.9375rem;
    padding: 0.75rem 0;
  }
  .btn-paste {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    border-radius: 10px;
    height: 34px;
  }
  .btn-paste:active {
    transform: scale(0.92);
  }
  .btn-hero-dl {
    width: 100%;
    justify-content: center;
    min-height: 52px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 16px;
    box-shadow: 0 8px 24px var(--primary-glow);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .btn-hero-dl:active {
    transform: scale(0.96);
  }

  /* ── App Downloader Cards ────────────────────────────────────────────── */
  .section-wrap { padding: 36px 0; }
  .glass-card {
    padding: 1.15rem;
    border-radius: 22px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0,0,0,0.35);
  }
  
  /* Video preview row in mobile feed layout */
  .video-preview-row {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.25rem;
  }
  .thumb-box {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 16px;
  }
  .video-title-text {
    font-size: 1.05rem;
    line-height: 1.35;
    font-weight: 700;
  }
  .video-uploader-text {
    font-size: 0.8125rem;
    font-weight: 500;
  }
  
  /* Segmented Quality Control Pills */
  .resolution-group {
    margin-top: 0.5rem;
  }
  .res-pills {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.35rem;
  }
  .res-pill span {
    text-align: center;
    padding: 0.55rem 0;
    font-size: 0.8125rem;
    font-weight: 700;
    border-radius: 12px;
  }
  .res-pill:active span {
    transform: scale(0.95);
  }

  /* Action Buttons */
  .dl-actions {
    flex-direction: column;
    gap: 0.75rem;
  }
  .btn-download {
    width: 100%;
    min-height: 54px;
    font-size: 1.05rem;
    font-weight: 800;
    border-radius: 16px;
    box-shadow: 0 8px 28px var(--primary-glow);
  }
  .btn-download:active {
    transform: scale(0.96);
  }
  .btn-outline-sm {
    width: 100%;
    min-height: 44px;
    justify-content: center;
    border-radius: 12px;
  }
  .btn-outline-sm:active {
    transform: scale(0.96);
  }

  /* Progress Card */
  .progress-meta-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .prog-meta-item {
    padding: 0.65rem 0.85rem;
    border-radius: 12px;
  }
  .progress-track {
    height: 10px;
    border-radius: 999px;
  }

  /* Result Card */
  .result-actions {
    flex-direction: column;
    gap: 0.65rem;
  }
  .result-actions .btn-primary,
  .result-actions .btn-secondary,
  .result-actions .btn-outline {
    width: 100%;
    justify-content: center;
    min-height: 50px;
    border-radius: 14px;
    font-size: 0.9375rem;
  }
  .result-actions button:active {
    transform: scale(0.96);
  }

  /* Platforms & Features grids */
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .platform-card {
    padding: 1.15rem 0.75rem;
    border-radius: 16px;
  }
  .platform-card:active {
    transform: scale(0.95);
  }
  .features-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }
  .feature-card {
    padding: 1.25rem;
    border-radius: 18px;
  }

  /* Footer */
  .footer {
    padding: 2.5rem 1.25rem 1.5rem;
  }
  .footer-inner {
    flex-direction: column;
    gap: 1.75rem;
  }
  .footer-links-group {
    gap: 1.5rem;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  /* ── Native Mobile Bottom Navigation Bar (Tab Bar) ───────────────────── */
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    height: calc(62px + env(safe-area-inset-bottom, 0px));
    padding: 0 0.5rem env(safe-area-inset-bottom, 0px);
    background: rgba(13, 15, 23, 0.88);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-top: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.45);
    align-items: center;
    justify-content: space-around;
  }
  [data-theme="light"] .mobile-bottom-nav {
    background: rgba(255, 255, 255, 0.92);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.08);
  }
  .nav-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-3);
    padding: 6px 0;
    cursor: pointer;
    position: relative;
    border-radius: 12px;
    transition: color 0.18s var(--ease), transform 0.15s ease;
  }
  .nav-tab:active {
    transform: scale(0.90);
  }
  .nav-tab.active {
    color: var(--primary);
  }
  .nav-tab-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    position: relative;
  }
  .nav-tab.active .nav-tab-icon::after {
    content: '';
    position: absolute;
    bottom: -3px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary);
  }
  .nav-tab-label {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.01em;
  }
}