:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --ink: #1f252b;
  --muted: #5d6a74;
  --border: #d8ddd9;
  --brand: #0b6e4f;
  --danger: #b42318;
  --warning-bg: #fdecea;
  --success-bg: #ecfdf3;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #fff8e6 0%, var(--bg) 35%, #eef3f6 100%);
}

.app-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.app-header {
  padding: 12px 4px 20px;
}

.app-header h1 {
  margin: 0;
  letter-spacing: 0.02em;
}

.app-header p {
  margin: 4px 0 0;
  color: var(--muted);
}

.network-banner {
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 14px;
  border: 1px solid var(--border);
}

.banner-offline {
  background: var(--warning-bg);
}

.banner-online {
  background: var(--success-bg);
}

.app-main {
  display: block;
}

.list {
  display: grid;
  gap: 12px;
}

.card,
.panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.card {
  width: 100%;
  text-align: left;
}

.podcast-card,
.episode-card {
  border: 1px solid var(--border);
  padding: 14px;
  cursor: pointer;
  transition:
    border-color 0.15s ease,
    transform 0.15s ease;
}

.podcast-card:hover,
.episode-card:hover {
  border-color: var(--brand);
  transform: translateY(-1px);
}

.podcast-card {
  display: flex;
  align-items: center;
  gap: 14px;
}

.podcast-badge {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: #d7f5ea;
  color: #0f5132;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.podcast-copy h3,
.episode-main h3,
.player-info h3,
.transcript-card h3,
.explanation-card h3 {
  margin: 0;
}

.podcast-copy p,
.episode-main p,
.player-info p,
.transcript-card p,
.explanation-card p {
  margin: 6px 0 0;
  color: var(--muted);
}

.panel {
  padding: 14px;
  margin-bottom: 12px;
}

.inline-heading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.inline-heading h2 {
  margin: 0;
  font-size: 1.05rem;
}

.link {
  border: 0;
  background: transparent;
  color: var(--brand);
  cursor: pointer;
  padding: 2px;
  font-size: 0.95rem;
}

.btn {
  border: 1px solid var(--border);
  background: #ffffff;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.status {
  margin: 0;
}

.status.error {
  color: var(--danger);
  margin-bottom: 8px;
}

.player-shell {
  display: grid;
  gap: 12px;
}

.player-shell.two-column {
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  align-items: start;
}

.player-info,
.player-content {
  min-width: 0;
}

.media-card,
.transcript-card,
.explanation-card {
  padding: 14px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.74rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.progress-block {
  margin-top: 12px;
}

progress {
  width: 100%;
  height: 8px;
}

.seek-slider {
  width: 100%;
  margin-top: 8px;
}

.time-row {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--muted);
}

.segment-meta {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--muted);
}

.player-content {
  display: grid;
  gap: 12px;
}

.speaker {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.explanation-card ul {
  padding-left: 18px;
  margin: 8px 0 0;
}

@media (max-width: 767px) {
  .app-shell {
    padding: 12px;
  }

  .podcast-card,
  .episode-card,
  .panel,
  .media-card,
  .transcript-card,
  .explanation-card {
    border-radius: 10px;
  }

  .controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .controls .btn:first-child {
    grid-column: span 2;
  }
}