/* ─── Design System ─────────────────────────────────────────────────────── */
:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #2a2a2a;
  --text: #f0f0f0;
  --muted: #777;
  --accent: #ffffff;
  --player-h: 64px;
  --header-h: 48px;
  --filter-h: 88px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ─── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; -webkit-text-size-adjust: 100%; }
body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.4;
  overflow-x: hidden;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

button { background: none; border: none; cursor: pointer; color: inherit; }
select { appearance: none; -webkit-appearance: none; background: none; border: none; color: inherit; font: inherit; cursor: pointer; }
input[type="search"] { appearance: none; -webkit-appearance: none; background: none; border: none; color: inherit; font: inherit; }
input[type="range"] { appearance: none; -webkit-appearance: none; }
svg { display: block; }
img { display: block; object-fit: cover; }

/* ─── Header ────────────────────────────────────────────────────────────── */
#app-header {
  position: fixed;
  top: 0;
  left: 0; right: 0;
  height: calc(var(--header-h) + env(safe-area-inset-top, 0px));
  padding-top: env(safe-area-inset-top, 0px);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: 16px;
  padding-right: 8px;
  z-index: 100;
}

.app-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.last-updated {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: opacity 0.15s;
}
.icon-btn:active { opacity: 1; }
.icon-btn svg { width: 18px; height: 18px; }

/* Indexed episode badge on cards */
.ep-indexed-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
  background: #333;
  padding: 1px 5px;
  text-transform: uppercase;
  align-self: center;
}

/* Seekable track items in the player */
.track-item.has-timestamp {
  cursor: pointer;
}
.track-item.has-timestamp:active { background: var(--surface); }
.track-timestamp {
  float: right;
  font-size: 11px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-left: 8px;
}

.icon-btn.spinning svg {
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.icon-btn.has-update { color: #e8b928; opacity: 1; }

/* ─── Filter Bar ────────────────────────────────────────────────────────── */
#filter-bar {
  position: fixed;
  top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
  left: 0; right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 90;
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px 6px;
  border-bottom: 1px solid var(--border);
}
.search-icon { width: 16px; height: 16px; flex-shrink: 0; color: var(--muted); }
#search-input {
  flex: 1;
  font-size: 16px;
  color: var(--text);
  outline: none;
}
#search-input::placeholder { color: var(--muted); }
#search-input::-webkit-search-cancel-button { display: none; }
.search-clear {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  font-size: 13px;
  flex-shrink: 0;
}

.filter-row {
  display: flex;
  gap: 0;
}
.filter-row select {
  flex: 1;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--text);
  border-right: 1px solid var(--border);
  position: relative;
}
.filter-row select:last-child { border-right: none; }
.filter-row select option { background: var(--bg); color: var(--text); }

/* ─── Main Content ──────────────────────────────────────────────────────── */
#app-main {
  padding-top: calc(var(--header-h) + var(--filter-h) + env(safe-area-inset-top, 0px));
  padding-bottom: calc(var(--player-h) + var(--safe-bottom) + 16px);
  min-height: 100vh;
}

/* ─── Two-Column Layout ────────────────────────────────────────────────── */
#app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

#left-column {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

#right-column {
  display: none; /* hidden on mobile by default */
}

@media (min-width: 768px) {
  #app-main {
    padding-top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
    padding-bottom: 0;
    height: 100vh;
    overflow: hidden;
  }

  #app-layout {
    flex-direction: row;
    flex: 1;
    height: 100%;
    overflow: hidden;
  }

  #left-column {
    width: 350px;
    min-width: 350px;
    flex-shrink: 0;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
  }

  #right-column {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow-y: auto;
    overscroll-behavior: contain;
    position: relative;
  }

  /* Filter bar: sticky inside left column on desktop */
  #filter-bar {
    position: sticky;
    top: 0;
    left: auto;
    right: auto;
    z-index: 10;
  }

  /* Mini player: spans full width on desktop too */
  /* Player drawer: overlays right column only */
  .player-sheet {
    left: 350px;
  }
  .sheet-backdrop {
    left: 350px;
  }

  /* Hide mobile nav buttons on desktop */
  .nav-buttons { display: none !important; }
  .nav-title { display: none !important; }
}

/* ─── Status Views ──────────────────────────────────────────────────────── */
.status-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
}

.loading-spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ─── Episode Cards ─────────────────────────────────────────────────────── */
.episode-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  -webkit-user-select: none;
  user-select: none;
  transition: background 0.1s;
}
.episode-card:active { background: var(--surface); }

.ep-thumb {
  flex-shrink: 0;
  width: 70px; height: 70px;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.ep-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.ep-thumb-placeholder {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-align: center;
  line-height: 1.2;
}
.ep-thumb-placeholder strong {
  display: block;
  font-size: 18px;
  color: var(--text);
}

.ep-body { flex: 1; min-width: 0; }

.ep-meta {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 2px;
}
.ep-num {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.ep-date {
  font-size: 12px;
  color: var(--muted);
}
.ep-host {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ep-caption {
  font-size: 12px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

.ep-played-dot {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

/* ─── Mini Player ───────────────────────────────────────────────────────── */
.mini-player {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: calc(var(--player-h) + var(--safe-bottom));
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 200;
  display: flex;
  flex-direction: column;
}

.mini-player-progress {
  height: 2px;
  background: var(--border);
  position: relative;
  flex-shrink: 0;
}
.mini-player-progress::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  background: var(--accent);
  width: var(--progress, 0%);
  transition: width 0.5s linear;
}

.mini-player-content {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 0 12px;
  cursor: pointer;
  padding-bottom: var(--safe-bottom);
}

.mini-thumb {
  width: 36px; height: 36px;
  background: var(--bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
}
.mini-thumb img { width: 100%; height: 100%; object-fit: cover; }

.mini-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}
.mini-title {
  display: block;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mini-host {
  display: block;
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mini-play-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.mini-play-btn svg { width: 20px; height: 20px; }

.mini-expand-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0.5;
}
.mini-expand-btn svg { width: 16px; height: 16px; }

/* Hidden scrubber (controls mini player position internally) */
.mini-scrubber {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px; height: 1px;
}

/* ─── Player Sheet ──────────────────────────────────────────────────────── */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 290;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.sheet-backdrop.visible { opacity: 1; }

.player-sheet {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 72dvh;
  max-height: 72dvh;
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-radius: 16px 16px 0 0;
  z-index: 300;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sheet-sticky-header {
  width: 100%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sheet-header-info {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 0 16px 12px;
}
.player-sheet.open {
  transform: translateY(0);
  z-index: 500;
}
.sheet-backdrop.visible {
  z-index: 490;
}

.sheet-drag-handle {
  width: 36px; height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 12px auto 0;
  flex-shrink: 0;
}

.sheet-close-btn {
  align-self: flex-end;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  margin-right: 8px;
}
.sheet-close-btn svg { width: 22px; height: 22px; }

.sheet-art {
  width: 88px; height: 88px;
  background: var(--surface);
  border: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sheet-art img { width: 100%; height: 100%; object-fit: cover; }
.sheet-art-placeholder {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-align: center;
}
.sheet-art-placeholder strong { display: block; font-size: 32px; color: var(--text); }

.sheet-info {
  flex: 1;
  min-width: 0;
  text-align: left;
  margin-bottom: 0;
}
.sheet-episode-num {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}
.sheet-host {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 8px;
}
.sheet-caption {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ─── Scrubber ──────────────────────────────────────────────────────────── */
.scrubber-wrap {
  width: 100%;
  padding: 0 16px;
  margin-bottom: 12px;
}

.sheet-scrubber {
  width: 100%;
  height: 4px;
  background: var(--border);
  outline: none;
  cursor: pointer;
  border-radius: 0;
}
.sheet-scrubber::-webkit-slider-runnable-track {
  height: 4px;
  background: linear-gradient(to right, var(--accent) var(--pct, 0%), var(--border) var(--pct, 0%));
  border-radius: 0;
}
.sheet-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: -5px;
  cursor: pointer;
}
.sheet-scrubber::-moz-range-track {
  height: 4px;
  background: var(--border);
}
.sheet-scrubber::-moz-range-progress {
  height: 4px;
  background: var(--accent);
}
.sheet-scrubber::-moz-range-thumb {
  width: 14px; height: 14px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}

/* ─── Player Controls ───────────────────────────────────────────────────── */
.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 28px;
}

.ctrl-btn {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0.8;
  transition: opacity 0.15s, transform 0.1s;
}
.ctrl-btn:active { opacity: 1; transform: scale(0.92); }
.ctrl-btn svg { width: 28px; height: 28px; }

.ctrl-btn--play {
  width: 60px; height: 60px;
  opacity: 1;
}
.ctrl-btn--play svg { width: 34px; height: 34px; }

/* Skip ±15 buttons — icon stacked above label */
.skip-btn {
  flex-direction: column;
  gap: 3px;
  height: 52px;
}
.skip-label {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--text);
}

/* Play/pause icon toggling via CSS class */
.play-pause-btn .icon-pause { display: none; }
.play-pause-btn .icon-play  { display: block; }
.play-pause-btn.is-playing .icon-play  { display: none; }
.play-pause-btn.is-playing .icon-pause { display: block; }

/* ─── Tracklist ─────────────────────────────────────────────────────────── */
.tracklist-section {
  width: 100%;
  border-top: 1px solid var(--border);
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-bottom: calc(24px + var(--safe-bottom));
}

.tracklist-header {
  padding: 14px 16px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.track-section-header {
  padding: 10px 16px 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.track-item {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.35;
}
.track-artist {
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
  display: inline;
}
.track-artist:active { opacity: 0.6; }
.track-title {
  color: var(--muted);
}

/* ─── Artist / Side Panel ───────────────────────────────────────────────── */
.side-panel {
  position: fixed;
  top: 0; right: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  z-index: 400;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.side-panel.open {
  transform: translateX(0);
}
@media (min-width: 768px) {
  .side-panel {
    width: 350px;
    left: 0;
    right: auto;
    top: calc(var(--header-h) + env(safe-area-inset-top, 0px));
    height: auto;
    bottom: 0;
    z-index: 95;
    transform: translateX(-100%);
  }
  .side-panel.open {
    transform: translateX(0);
  }
}

.side-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: calc(env(safe-area-inset-top, 0px) + 12px) 12px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.back-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0.7;
}
.back-btn:active { opacity: 1; }
.back-btn svg { width: 20px; height: 20px; }

.side-panel-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#artist-episode-list {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-bottom: calc(var(--player-h) + var(--safe-bottom));
}

/* ─── Utilities ─────────────────────────────────────────────────────────── */
[hidden] { display: none !important; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

/* ─── Artist Index Overlay ──────────────────────────────────────────────── */
#artist-index-overlay {
  position: fixed;
  top: calc(var(--header-h) + env(safe-area-inset-top, 0px) + var(--filter-h));
  left: 0; right: 0;
  bottom: calc(var(--player-h) + var(--safe-bottom));
  background: var(--bg);
  z-index: 85;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
@media (min-width: 768px) {
  #artist-index-overlay {
    position: absolute;
    top: var(--filter-h);
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
  }
}
.artist-index-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  gap: 8px;
}
.artist-index-row:active { background: var(--surface); }
.artist-index-name { font-size: 14px; font-weight: 500; flex: 1; }
.artist-index-count { font-size: 12px; color: var(--muted); flex-shrink: 0; }
.artist-index-empty {
  padding: 32px 16px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
.search-cancel {
  font-size: 14px;
  color: var(--muted);
  padding: 0 4px 0 8px;
  flex-shrink: 0;
  white-space: nowrap;
}

/* ── Player visibility ──────────────────────────────────────────────────── */
/* Shrink side panel to expose mini player when an episode is loaded */
body.has-player .side-panel {
  height: calc(100% - var(--player-h) - var(--safe-bottom));
}

/* Hide mini player when soft keyboard is up */
body.keyboard-open .mini-player {
  display: none;
}

/* Track names in artist episode cards */
.ep-artist-tracks {
  font-size: 12px;
  color: var(--accent);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Episode Detail (Right Column) ────────────────────────────────────── */
.detail-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 300px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  padding: 40px;
}

.detail-header {
  display: flex;
  gap: 16px;
  padding: 24px 20px 16px;
  align-items: flex-start;
}

.detail-art {
  width: 120px;
  height: 120px;
  background: var(--surface);
  border: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.detail-art img { width: 100%; height: 100%; object-fit: cover; }
.detail-art-placeholder {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-align: center;
}
.detail-art-placeholder strong { display: block; font-size: 28px; color: var(--text); }

.detail-info { flex: 1; min-width: 0; }
.detail-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}
.detail-host { font-size: 14px; font-weight: 500; margin-bottom: 2px; }
.detail-date { font-size: 12px; color: var(--muted); }

.detail-caption {
  padding: 0 20px 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

.detail-play-btn {
  display: block;
  margin: 0 20px 20px;
  padding: 12px 24px;
  background: var(--text);
  color: var(--bg);
  font-size: 14px;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
  transition: opacity 0.15s;
}
.detail-play-btn:active { opacity: 0.8; }

.detail-tracklist { border-top: 1px solid var(--border); }

/* ─── Mobile Navigation ────────────────────────────────────────────────── */
.nav-buttons {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

@media (max-width: 767px) {
  /* When viewing episode detail on mobile, show right column instead of left */
  body.mobile-detail #left-column { display: none; }
  body.mobile-detail #right-column { display: block; overflow-y: auto; flex: 1; }
  body.mobile-detail #filter-bar { display: none; }

  /* Right column on mobile needs padding for mini player */
  body.mobile-detail #right-column {
    padding-bottom: calc(var(--player-h) + var(--safe-bottom) + 16px);
  }
}