:root {
  --bg: #0c0c14;
  --bg-elev: #111119;
  --surface: #16161f;
  --surface-hover: #1c1c28;
  --fill: rgba(255, 255, 255, 0.06);
  --fill-strong: rgba(255, 255, 255, 0.12);
  --separator: rgba(255, 255, 255, 0.08);
  --label-1: #f4f4fa;
  --label-2: #a8a8bc;
  --label-3: #6e6e84;
  --amber: #e8a44a;
  --amber-rgb: 232, 164, 74;
  --amber-soft: #f0c078;
  --danger: #f87171;
  --text-xs: 0.7rem;
  --text-sm: 0.78rem;
  --text-base: 0.88rem;
  --text-lg: 1.05rem;
  --text-xl: 1.25rem;
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --radius-sm: 0.5rem;
  --radius: 0.85rem;
  --radius-lg: 1.2rem;
  --radius-full: 999px;
  --dur: 0.2s;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--label-1);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(60% 35% at 50% -5%, rgba(var(--amber-rgb), 0.07), transparent 60%);
}
::-webkit-scrollbar { width: 0; height: 0; }
button { font: inherit; border: none; background: none; color: inherit; cursor: pointer; }
input { font: inherit; border: none; background: none; color: inherit; outline: none; }
img { display: block; max-width: 100%; }

/* ── Header ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  padding-top: calc(var(--safe-top) + var(--sp-3));
  background: rgba(12, 12, 20, 0.82);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--separator);
}
.header-left { display: flex; align-items: center; gap: var(--sp-2); }
.header-icon { width: 22px; height: 22px; color: var(--amber); }
.brand { font-size: var(--text-lg); font-weight: 700; letter-spacing: -0.02em; }
.brand-accent { color: var(--amber); }
.install-btn {
  display: flex; align-items: center; gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-3); border-radius: var(--radius-full);
  background: rgba(var(--amber-rgb), 0.15); color: var(--amber);
  font-size: var(--text-sm); font-weight: 600;
}
.install-btn:active { background: rgba(var(--amber-rgb), 0.28); }
.install-btn svg { width: 16px; height: 16px; }

/* ── Search ── */

.search-bar {
  position: sticky; top: 0; z-index: 99;
  display: flex; align-items: center; gap: var(--sp-2);
  margin: var(--sp-3) var(--sp-4) 0;
  padding: var(--sp-2) var(--sp-3);
  background: var(--surface); border-radius: var(--radius);
  border: 1px solid var(--separator);
}
.search-bar:focus-within { border-color: rgba(var(--amber-rgb), 0.4); }
.search-icon { width: 18px; height: 18px; color: var(--label-3); flex-shrink: 0; }
#searchInput { flex: 1; font-size: var(--text-base); min-width: 0; }
#searchInput::placeholder { color: var(--label-3); }

/* ── Filter bars ── */

.country-bar, .group-bar {
  display: flex; gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.group-bar { padding-top: 0; }

.country-chip, .group-chip {
  flex-shrink: 0;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  background: var(--fill); color: var(--label-2);
  font-size: var(--text-xs); font-weight: 500;
  white-space: nowrap;
  display: flex; align-items: center; gap: 4px;
}
.country-chip.active, .group-chip.active {
  background: rgba(var(--amber-rgb), 0.18); color: var(--amber); font-weight: 600;
}
.country-chip:active, .group-chip:active { transform: scale(0.95); }
.chip-count {
  font-size: 0.65rem;
  opacity: 0.5;
  font-weight: 400;
}

/* ── Content ── */

.content { padding: var(--sp-2) var(--sp-4) calc(var(--safe-bottom) + 2rem); }

/* ── Loader ── */

.loader {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--sp-4); padding: 5rem 0; color: var(--label-3); font-size: var(--text-sm);
}
.loader-ring {
  width: 36px; height: 36px;
  border: 3px solid var(--fill-strong); border-top-color: var(--amber);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Section (country/group) ── */

.country-section { margin-bottom: var(--sp-2); }

.section-header {
  display: flex; align-items: center; gap: var(--sp-2);
  width: 100%; padding: var(--sp-2) var(--sp-2);
  border-radius: var(--radius-sm);
  transition: background var(--dur);
}
.section-header:active { background: var(--fill); }
.section-icon { font-size: 1.2em; flex-shrink: 0; }
.section-name { font-size: var(--text-base); font-weight: 700; flex: 1; text-align: left; }
.section-count {
  font-size: var(--text-xs); color: var(--label-3); font-weight: 400;
  background: var(--fill); padding: 2px 8px; border-radius: var(--radius-full);
}
.section-chevron {
  width: 18px; height: 18px; color: var(--label-3);
  transition: transform var(--dur); flex-shrink: 0;
}
.section-header.collapsed .section-chevron { transform: rotate(-90deg); }

.section-list {
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.2s ease;
}
.section-list.collapsed { max-height: 0 !important; opacity: 0; pointer-events: none; }

/* ── Channel row ── */

.channel-row {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-2);
  border-radius: var(--radius-sm);
  width: 100%; text-align: left;
  transition: background var(--dur);
}
.channel-row:active { background: var(--fill); }

.row-logo {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--fill);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.row-logo img {
  width: 100%; height: 100%; object-fit: contain; padding: 4px;
}
.row-fallback {
  font-size: var(--text-sm); font-weight: 700; color: var(--label-3);
}

.row-info {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 1px;
}
.row-name {
  font-size: var(--text-sm); font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.row-meta {
  font-size: var(--text-xs); color: var(--label-3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.row-play {
  width: 20px; height: 20px; flex-shrink: 0;
  color: var(--label-3);
  transition: color var(--dur);
}
.channel-row:active .row-play { color: var(--amber); }

/* ── Empty/Error ── */

.empty-state {
  text-align: center; padding: 4rem var(--sp-4); color: var(--label-3);
}
.empty-state svg { width: 48px; height: 48px; margin: 0 auto var(--sp-3); opacity: 0.4; }
.empty-state p { font-size: var(--text-sm); }

.error-state { text-align: center; padding: 4rem var(--sp-4); color: var(--danger); }
.error-state p { font-size: var(--text-sm); margin-bottom: var(--sp-3); }
.retry-btn {
  padding: var(--sp-2) var(--sp-4); border-radius: var(--radius);
  background: rgba(248, 113, 113, 0.15); color: var(--danger);
  font-weight: 600; font-size: var(--text-sm);
}

/* ── Player ── */

.player-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: #000; display: none; flex-direction: column;
}
.player-overlay.open { display: flex; animation: fadeUp 0.25s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.player-header {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  padding-top: calc(var(--safe-top) + var(--sp-3));
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  z-index: 10;
}
.player-close, .player-fullscreen {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.1); flex-shrink: 0;
}
.player-close:active, .player-fullscreen:active { background: rgba(255, 255, 255, 0.2); }
.player-close svg, .player-fullscreen svg { width: 20px; height: 20px; }
.player-info { flex: 1; min-width: 0; }
.player-info h2 {
  font-size: var(--text-base); font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.player-info p { font-size: var(--text-xs); color: var(--label-3); }

#playerVideo { flex: 1; width: 100%; background: #000; object-fit: contain; }

.player-toast {
  position: fixed; bottom: 5rem; left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: var(--sp-2) var(--sp-4); border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.85); color: var(--label-1);
  font-size: var(--text-sm); font-weight: 500;
  opacity: 0; pointer-events: none;
  transition: all 0.3s ease; z-index: 210; white-space: nowrap;
}
.player-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Reduced motion ── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Desktop ── */

@media (min-width: 768px) {
  .content { max-width: 640px; margin: 0 auto; }
}