:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #121212;
  --card: #1a1a1a;
  --card-active: #2b2f39;
  --border: #2f2f2f;
  --text: #f5f5f5;
  --muted: #b5b5b5;
  --accent: #4cc9f0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

#app {
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  padding: clamp(14px, 2.6vw, 28px) clamp(12px, 3vw, 34px);
  display: flex;
  flex-direction: column;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(27px, 4vw, 42px);
  letter-spacing: 0.4px;
}

.topbar p {
  margin: 6px 0 14px;
  color: var(--muted);
  font-size: clamp(14px, 2.1vw, 22px);
}

.view {
  width: 100%;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  align-content: start;
  overflow-y: auto;
  max-height: 100%;
  flex: 1;
  min-height: 0;
  padding-right: 6px;
}

.card {
  min-height: 124px;
  border: 2px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 14px;
  cursor: pointer;
}

.card.active {
  border-color: var(--accent);
  background: var(--card-active);
  transform: scale(1.02);
}

.card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.card h3 {
  margin: 0;
  font-size: clamp(18px, 2vw, 27px);
  line-height: 1.2;
}

.card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: clamp(14px, 1.8vw, 21px);
}

.panel {
  background: var(--panel);
  border: 2px solid var(--border);
  border-radius: 18px;
  padding: 22px;
}

.panel h2 {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 32px);
}

.panel p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: clamp(14px, 2vw, 22px);
}

.player-panel {
  max-width: 1100px;
}

.mini-player {
  padding: 14px 16px;
}

.mini-meta {
  margin: 0;
  color: var(--muted);
  font-size: clamp(12px, 1.6vw, 16px);
}

.mini-title {
  margin: 6px 0 0;
  font-size: clamp(18px, 2.2vw, 28px);
}

.mini-author {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: clamp(13px, 1.8vw, 19px);
}

.mini-progress-wrap {
  margin-top: 10px;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #2c2c2c;
  overflow: hidden;
}

.mini-progress-fill {
  width: 0;
  height: 100%;
  background: var(--accent);
}

.mini-time {
  margin: 8px 0 0;
  color: var(--text);
  font-size: clamp(12px, 1.7vw, 18px);
}

.progress-wrap {
  margin-top: 24px;
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #2c2c2c;
  overflow: hidden;
}

.progress-fill {
  width: 0;
  height: 100%;
  background: var(--accent);
}

#timeLabel {
  margin-top: 12px;
  color: var(--text);
}

.hint {
  margin-top: 24px;
  font-size: clamp(13px, 1.8vw, 20px);
}

.web-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.control-btn {
  border: 2px solid var(--accent);
  background: var(--accent);
  color: #042633;
  border-radius: 10px;
  font-size: clamp(15px, 1.8vw, 20px);
  font-weight: 700;
  padding: 10px 16px;
  cursor: pointer;
}

.control-btn.secondary {
  background: #1f2937;
  border-color: #3b4a60;
  color: var(--text);
}

.control-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.84);
  display: grid;
  place-items: center;
  padding: 28px;
}

.overlay .panel {
  max-width: 900px;
}

.hidden {
  display: none !important;
}

@media (max-width: 1400px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1000px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  #app {
    padding: 12px 12px 16px;
  }

  .view {
    gap: 10px;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-right: 0;
  }

  .card {
    min-height: 98px;
    padding: 11px;
  }

  .panel {
    border-radius: 14px;
    padding: 14px;
  }

  .player-panel {
    max-width: none;
  }

  .progress-wrap {
    margin-top: 14px;
    height: 10px;
  }

  .mini-player {
    padding: 12px;
  }

  #timeLabel {
    margin-top: 8px;
  }

  .hint {
    margin-top: 12px;
  }

  .web-controls {
    gap: 8px;
  }

  .control-btn {
    min-height: 44px;
    padding: 9px 12px;
    flex: 1 1 calc(50% - 4px);
  }

  .overlay {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .control-btn {
    flex-basis: 100%;
  }
}