:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --accent: #53a8b6;
  --accent-hover: #79c2ce;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --danger: #e94560;
  --success: #4caf50;
  --warning: #ff9800;
  --border: #2a2a4a;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Upload area */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 24px;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--accent);
  background: rgba(83, 168, 182, 0.05);
}

.upload-area p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Resume banner */
.resume-banner {
  margin-bottom: 16px;
}

.resume-btn {
  width: 100%;
  padding: 14px;
  background: var(--bg-tertiary);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  transition: background 0.2s;
}

.resume-btn:hover {
  background: rgba(83, 168, 182, 0.15);
}

/* File table */
.file-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 32px;
}

.file-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.file-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  position: relative;
}

.file-row.clickable .file-name {
  cursor: pointer;
  color: var(--accent);
}

.file-row.clickable .file-name:hover {
  text-decoration: underline;
}

.stt-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.stt-pending { background: var(--warning); color: #000; }
.stt-processing { background: var(--accent); color: #000; }
.stt-done { background: var(--success); color: #000; }
.stt-error { background: var(--danger); color: #fff; }

.delete-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
  border-radius: 4px;
}

.delete-btn:hover {
  color: var(--danger);
  background: rgba(233, 69, 96, 0.1);
}

/* Playlists */
.playlists-section {
  margin-top: 24px;
}

.playlists-section h3 {
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.playlist-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: 6px;
  margin-bottom: 6px;
  font-size: 14px;
}

.playlist-create {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.playlist-create input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
}

.playlist-create button {
  padding: 8px 16px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}

.empty-text {
  color: var(--text-secondary);
  font-size: 13px;
}

/* Add to playlist button */
.add-to-playlist-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  padding: 2px 8px;
  border-radius: 4px;
  line-height: 1;
}

.add-to-playlist-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* Playlist dropdown */
.playlist-dropdown {
  position: absolute;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 0;
  z-index: 50;
  min-width: 150px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.playlist-dropdown-item {
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.playlist-dropdown-item:hover {
  background: var(--bg-tertiary);
}

/* Playlist entry (expandable) */
.playlist-entry {
  margin-bottom: 6px;
}

.playlist-item-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.playlist-toggle {
  cursor: pointer;
  flex: 1;
}

.playlist-toggle:hover {
  color: var(--accent);
}

.playlist-play-btn {
  font-size: 14px;
  padding: 2px 8px;
}

/* Playlist file list */
.playlist-files {
  padding: 4px 0 4px 16px;
}

.playlist-file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 12px;
  font-size: 13px;
  border-radius: 4px;
  cursor: grab;
}

.playlist-file-item:hover {
  background: rgba(83, 168, 182, 0.05);
}

.playlist-file-item.drag-over {
  border-top: 2px solid var(--accent);
}

.playlist-file-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}


/* Language settings */
.lang-settings {
  margin-bottom: 24px;
}

.lang-settings h3 {
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.lang-selects {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-selects label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lang-selects label span {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.lang-selects select {
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  width: 140px;
  cursor: pointer;
}

.lang-arrow {
  color: var(--text-secondary);
  font-size: 18px;
  margin-top: 16px;
}

.lang-save-btn {
  margin-top: 16px;
  padding: 6px 16px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

.lang-save-btn:hover {
  background: var(--accent-hover);
}

/* ==================== Player ==================== */

.player-wrapper {
  display: flex;
  height: calc(100vh - 40px);
}

.player {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

/* Playlist sidebar */
.playlist-sidebar {
  width: 240px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--bg-secondary);
  border-radius: 8px 0 0 8px;
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.sidebar-close {
  font-size: 16px;
  padding: 2px 6px;
}

.sidebar-files {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}

.sidebar-file {
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-left: 3px solid transparent;
}

.sidebar-file:hover {
  background: rgba(83, 168, 182, 0.05);
}

.sidebar-file.active {
  background: rgba(83, 168, 182, 0.1);
  border-left-color: var(--accent);
  color: var(--accent);
}

/* Top bar */
.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.file-title {
  flex: 1;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.top-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 10px;
  border-radius: 6px;
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.toggle-btn {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.toggle-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(83, 168, 182, 0.1);
}

.speed-display {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.speed-display:hover {
  color: var(--accent);
}

/* Audio bar */
.audio-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
}

.play-btn {
  font-size: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.time {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 40px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.seekbar {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}

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

.volume {
  width: 80px;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}

.volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-secondary);
  cursor: pointer;
}

/* Segment bar */
.segment-bar {
  display: flex;
  gap: 2px;
  height: 20px;
  margin: 4px 0 8px;
}

.seg-block {
  background: var(--bg-tertiary);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s;
  min-width: 2px;
}

.seg-block:hover {
  background: var(--accent-hover);
}

.seg-block.active {
  background: var(--accent);
}

/* Segment bar edit mode */
.segment-bar.edit-mode {
  height: 32px;
}

.seg-handle {
  width: 6px;
  flex-shrink: 0;
  cursor: col-resize;
  background: var(--border);
  border-radius: 2px;
  transition: background 0.15s;
  touch-action: none;
}

.seg-handle:hover {
  background: var(--accent);
}

/* Segment time label */
.seg-time {
  grid-column: 1 / -1;
  font-size: 11px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nudge-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  padding: 0 4px;
  border-radius: 3px;
  line-height: 1.4;
}

.nudge-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Edit actions bar */
.edit-actions {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
  margin-top: 4px;
  justify-content: flex-end;
}

/* Subtitle panel */
.subtitle-panel {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.subtitle-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.subtitle-col-header {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.subtitle-rows {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.subtitle-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s, background 0.15s;
}

.subtitle-row:hover {
  background: rgba(83, 168, 182, 0.05);
}

.subtitle-row.active {
  background: rgba(83, 168, 182, 0.1);
  border-left: 3px solid var(--accent);
}

.sub-en {
  font-size: 15px;
  line-height: 1.5;
}

.sub-ko {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.subtitle-rows.hide-translation .sub-ko {
  visibility: hidden;
}

/* Keyboard help */
.keyboard-help {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.keyboard-help span {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}