/* ═══════════════════════════════════════════
   Sonic Radio Streaming App — Dark Theme
   ═══════════════════════════════════════════ */

:root {
  /* Charcoal surfaces — pure neutral grays (R=G=B) */
  --surface-0: #18181A;
  --surface-1: #1E1E21;
  --surface-2: #262629;
  --surface-3: #303034;
  --surface-4: #3C3C40;

  /* Accent — sky blue */
  --accent: #86C1D5;
  --accent-hover: #A3D4E4;
  --accent-glow: rgba(134, 193, 213, 0.15);
  --accent-glow-strong: rgba(134, 193, 213, 0.3);

  /* Text */
  --text-primary: #E8E8EC;
  --text-secondary: #A0A0A6;
  --text-muted: #6B6B72;

  /* Feedback */
  --success: #4ADE80;
  --error: #F87171;
  --warning: #FBBF24;

  /* Misc */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --sidebar-width: 240px;
  --player-height: 80px;
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}

html { font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--surface-0);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* ── Plexus Canvas ── */
#plexus {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
  opacity: 0.4;
}

/* ── App Layout ── */
.app {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 1fr var(--player-height);
  height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  background: var(--surface-1);
  border-right: 1px solid var(--surface-3);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  grid-row: 1 / -1;
}

.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.35rem; font-weight: 700;
  color: var(--accent); margin-bottom: 32px; padding-left: 4px;
}

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

.nav-links { list-style: none; display: flex; flex-direction: column; gap: 4px; }

.nav-links li a {
  display: block; padding: 10px 14px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none; font-size: 0.9rem;
  transition: all 0.2s ease;
}

.nav-links li a:hover { background: var(--surface-3); color: var(--text-primary); }
.nav-links li.active a { background: var(--accent-glow); color: var(--accent); font-weight: 500; }

/* Now Playing Mini */
.now-playing-mini {
  margin-top: auto; padding: 14px; border-radius: var(--radius-md);
  background: var(--surface-2); border: 1px solid var(--surface-3);
}

.mini-info { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.mini-name { font-size: 0.8rem; font-weight: 600; color: var(--text-primary); max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini-country { font-size: 0.7rem; color: var(--accent); font-family: var(--font-mono); }

.mini-controls { display: flex; justify-content: center; }

/* Volume */
.volume-control {
  display: flex; align-items: center; gap: 10px; margin-top: 16px; padding: 0 4px;
}

.vol-icon { color: var(--text-muted); flex-shrink: 0; }

.volume-slider {
  -webkit-appearance: none; appearance: none; width: 100%; height: 4px;
  background: var(--surface-3); border-radius: 2px; outline: none; cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 14px; height: 14px;
  border-radius: 50%; background: var(--accent); cursor: pointer;
  box-shadow: 0 0 6px var(--accent-glow-strong);
}

.volume-slider::-moz-range-thumb {
  width: 14px; height: 14px; border: none;
  border-radius: 50%; background: var(--accent); cursor: pointer;
}

/* ── Content Area ── */
.content {
  overflow-y: auto; padding: 32px 36px;
  scrollbar-width: thin; scrollbar-color: var(--surface-3) transparent;
}

.view-header h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 4px; }
.view-header .view-title-row { display: flex; align-items: center; gap: 14px; }
.view-header .country-flag-header { width: 36px; height: 26px; object-fit: cover; border-radius: 4px; box-shadow: 0 1px 4px rgba(0,0,0,0.4); flex-shrink: 0; }
.subtitle { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 24px; }

/* ── Search Bar ── */
.search-bar {
  display: flex; align-items: center; gap: 10px; padding: 10px 16px;
  background: var(--surface-2); border: 1px solid var(--surface-3);
  border-radius: var(--radius-md); margin-bottom: 16px; color: var(--text-muted);
}

.search-bar input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text-primary); font-size: 0.9rem; font-family: var(--font-body);
}

.search-bar input::placeholder { color: var(--text-muted); }

/* ── Sort Controls ── */
.sort-controls {
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px; font-size: 0.85rem; color: var(--text-secondary);
}

.sort-controls select {
  background: var(--surface-2); border: 1px solid var(--surface-3); color: var(--text-primary);
  padding: 6px 12px; border-radius: var(--radius-sm); font-size: 0.85rem; cursor: pointer; outline: none;
}

.sort-controls select:focus { border-color: var(--accent); }

/* ── Station Grid ── */
.station-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px; margin-bottom: 24px;
}

.station-card {
  background: var(--surface-2); border: 1px solid var(--surface-3);
  border-radius: var(--radius-md); padding: 16px; cursor: pointer;
  transition: all 0.2s ease; position: relative; overflow: hidden;
}

.station-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.station-card.playing { border-color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); }

.station-favicon { width: 40px; height: 40px; border-radius: var(--radius-sm); object-fit: cover; margin-bottom: 12px; background: var(--surface-3); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }

.station-name { font-weight: 600; font-size: 0.95rem; color: var(--text-primary); margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.station-tags { font-size: 0.75rem; color: var(--accent); margin-bottom: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.station-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; color: var(--text-muted); }

.station-fav-btn {
  background: none; border: none; cursor: pointer; padding: 4px; color: var(--text-muted); transition: all 0.2s ease;
  display: flex; align-items: center; justify-content: center; font-size: 1.8rem; line-height: 1; width: 36px; height: 36px;
}

.station-fav-btn:hover { color: var(--accent); transform: scale(1.25); }
.station-fav-btn.faved { color: #F87171; font-size: 2rem; }

/* ── Country Grid ── */
.country-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 10px; margin-bottom: 24px;
}

.country-card {
  background: var(--surface-2); border: 1px solid var(--surface-3);
  border-radius: var(--radius-md); padding: 14px 16px; cursor: pointer;
  transition: all 0.2s ease; display: flex; align-items: center; gap: 10px;
}

.country-card:hover { border-color: var(--accent); transform: translateY(-1px); }

.country-flag {
  width: 28px; height: 20px; object-fit: cover; border-radius: 3px; flex-shrink: 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.country-name { font-weight: 500; font-size: 0.85rem; color: var(--text-primary); }
.country-count { font-size: 0.7rem; color: var(--text-muted); margin-left: auto; }

.country-card.selected { border-color: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }

/* ── Player Bar ── */
.player-bar {
  grid-column: 2 / -1;
  background: var(--surface-1); border-top: 1px solid var(--surface-3);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; gap: 24px; height: var(--player-height);
}

/* Left mini panel */
.mini-panel {
  display: flex; align-items: center; gap: 12px; min-width: 200px; max-width: 300px;
}
.mini-panel-name {
  font-weight: 600; font-size: 0.85rem; color: var(--text-primary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex-shrink: 1;
}
.mini-volume-control {
  display: flex; align-items: center; gap: 6px; flex-shrink: 0;
}
.vol-icon-small { color: var(--text-muted); }

/* Volume sliders */
.volume-slider, .mini-volume-slider {
  -webkit-appearance: none; appearance: none; height: 4px;
  background: var(--surface-3); border-radius: 2px; outline: none; cursor: pointer;
}
.volume-slider { width: 100%; }
.mini-volume-slider { width: 80px; }

.volume-slider::-webkit-slider-thumb,
.mini-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 14px; height: 14px;
  border-radius: 50%; background: var(--accent); cursor: pointer;
  box-shadow: 0 0 6px var(--accent-glow-strong);
}

.volume-slider::-moz-range-thumb,
.mini-volume-slider::-moz-range-thumb {
  width: 14px; height: 14px; border: none;
  border-radius: 50%; background: var(--accent); cursor: pointer;
}

/* Center controls */
.player-controls { display: flex; align-items: center; gap: 8px; }

.btn-icon {
  background: none; border: none; cursor: pointer; padding: 10px;
  border-radius: var(--radius-full); color: var(--text-secondary);
  transition: all 0.2s ease; display: flex; align-items: center; justify-content: center;
}

.btn-icon:hover { background: var(--surface-3); color: var(--text-primary); }
.btn-play { width: 48px; height: 48px; color: var(--accent); border-radius: 50%; background: var(--accent-glow); }
.btn-play:hover { background: var(--accent-glow-strong); transform: scale(1.05); }
.btn-play svg { width: 20px; height: 20px; }

/* Fav button in player bar — larger heart */
.player-controls .btn-fav {
  font-size: 2rem; line-height: 1; color: var(--text-muted); width: 48px; height: 48px;
}
.player-controls .btn-fav.faved { color: #F87171; }

/* Right status */
.player-status { display: flex; align-items: center; gap: 8px; font-size: 0.75rem; color: var(--text-muted); min-width: 100px; justify-content: flex-end; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted); transition: background 0.3s ease; }
.status-dot.connected { background: var(--success); box-shadow: 0 0 8px rgba(74,222,128,0.4); }
.status-dot.error { background: var(--error); }

/* ── Buttons & Load More ── */
.btn-load-more {
  display: block; margin: 0 auto; padding: 12px 32px;
  background: var(--surface-2); border: 1px solid var(--surface-3);
  color: var(--text-secondary); border-radius: var(--radius-full);
  font-size: 0.85rem; cursor: pointer; transition: all 0.2s ease;
}

.btn-load-more:hover { border-color: var(--accent); color: var(--accent); }
.btn-load-more:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state p { font-size: 0.9rem; line-height: 1.6; }

/* ── Views Toggle ── */
.view { display: none; }
.view.active { display: block; animation: fadeUp 0.3s ease; }

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

/* ── Scrollbar ── */
.content::-webkit-scrollbar { width: 6px; }
.content::-webkit-scrollbar-track { background: transparent; }
.content::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr var(--player-height); }
  .sidebar {
    grid-row: 1 / 2;
    grid-column: 1;
    flex-direction: row;
    padding: 12px;
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
    border-right: none;
    border-bottom: none;
    background: transparent;
    position: relative;
    z-index: 100;
  }
  .logo { display: none; }
  .content {
    grid-row: 2 / 3;
    grid-column: 1;
    padding: 20px 16px;
  }
  .player-bar {
    grid-row: 3 / 4;
    grid-column: 1;
    padding: 0 12px;
  }
  .volume-control, .now-playing-mini { display: none !important; }
  .station-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
}

@media (max-width: 640px) {
  .station-grid { grid-template-columns: 1fr; }
  .mini-panel { min-width: 0; max-width: 200px; }
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  order: -1;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1024px) {
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    flex-direction: column !important;
    background: var(--surface-1);
    border: 1px solid var(--surface-3);
    border-radius: var(--radius-md);
    padding: 8px;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  }
  .nav-links.open { display: flex; }
  .sidebar { position: relative; }
}