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

:root {
  --bg-color: #0d0b14;
  --panel-bg: rgba(25, 23, 36, 0.65);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text-main: #f0f0f5;
  --text-muted: #8e8c99;
  --accent-color: #7b2cbf;
  --accent-hover: #9d4edd;
  --danger-color: #e63946;
  --danger-hover: #ff4d6d;
  --success-color: #06d6a0;
  --success-hover: #08f2b5;
  --item-bg: rgba(255, 255, 255, 0.03);
  --item-hover: rgba(255, 255, 255, 0.08);
  --item-active: rgba(123, 44, 191, 0.3);
  --glass-blur: blur(16px);
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  overflow-x: hidden;
  line-height: 1.5;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Ambient Background */
.background-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: 
    radial-gradient(circle at 15% 50%, rgba(123, 44, 191, 0.15), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(6, 214, 160, 0.1), transparent 40%);
  pointer-events: none;
}

/* Layout */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  padding: 1.5rem 2rem;
  background: rgba(13, 11, 20, 0.8);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-actions {
  display: flex;
  gap: 1rem;
}

.app-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: -0.5px;
}

.app-main {
  flex: 1;
  display: flex;
  padding: 2rem;
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.sidebar {
  width: 380px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex-shrink: 0;
}

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.card {
  background: var(--panel-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card h2 {
  font-weight: 600;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.manager-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .app-main {
    flex-direction: column;
    padding: 1rem;
  }
  .sidebar {
    width: 100%;
  }
}

/* Forms & Inputs */
label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.input-field {
  width: 100%;
  padding: 0.75rem 1rem;
  margin: 0.25rem 0 0.75rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.2s;
}

.input-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(123, 44, 191, 0.2);
}

.input-field::placeholder {
  color: rgba(255, 255, 255, 0.2);
}

textarea.input-field {
  resize: vertical;
  min-height: 80px;
}

/* Buttons */
.btn {
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:active {
  transform: scale(0.96);
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  color: white;
  box-shadow: 0 4px 12px rgba(123, 44, 191, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 16px rgba(123, 44, 191, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-danger {
  background: rgba(230, 57, 70, 0.15);
  color: var(--danger-hover);
  border: 1px solid rgba(230, 57, 70, 0.3);
}

.btn-danger:hover {
  background: var(--danger-color);
  color: white;
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

.btn-success {
  background: var(--success-color);
  color: #000;
}

/* Lists */
.song-list,
.playlist-list {
  list-style: none;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.song-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--item-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.song-item:hover {
  background: var(--item-hover);
  transform: translateX(4px);
}

.song-item.active {
  background: var(--item-active);
  border-color: rgba(123, 44, 191, 0.4);
}

.song-number {
  min-width: 2rem;
  text-align: center;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.song-title {
  font-weight: 500;
  flex: 1;
  cursor: default;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-meta {
  color: var(--text-muted);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.8rem;
  white-space: nowrap;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-meta.provider-y {
  color: #ff9999;
  background: rgba(230, 57, 70, 0.15);
  border: 1px solid rgba(230, 57, 70, 0.3);
}

.song-meta.provider-s {
  color: #ffb380;
  background: rgba(255, 85, 0, 0.15);
  border: 1px solid rgba(255, 85, 0, 0.3);
}

.song-actions {
  display: flex;
  gap: 0.4rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  margin-left: 0.5rem;
}

.song-item:hover .song-actions,
.song-item.active .song-actions {
  opacity: 1;
}

.song-actions .btn {
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
  line-height: 1;
  min-width: 32px;
}

.song-title-input {
  flex: 1;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--accent-color);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  background: rgba(0, 0, 0, 0.5);
  color: white;
}

.provider {
  font-weight: 700;
  color: var(--accent-hover);
  min-width: 2rem;
}

.song-id {
  color: var(--text-muted);
  font-family: monospace;
  font-size: 0.875rem;
  flex: 1;
}

.song-item.active .song-title {
  color: #fff;
  font-weight: 600;
}

.song-item.active .song-number {
  color: var(--accent-hover);
}

.playlist-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--item-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.playlist-item:hover {
  background: var(--item-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.playlist-item.active {
  background: var(--item-active);
  border-color: rgba(123, 44, 191, 0.4);
}

.playlist-item.editing {
  cursor: default;
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--accent-color);
  transform: none;
  box-shadow: 0 0 20px rgba(123, 44, 191, 0.15);
}

.playlist-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.playlist-info strong {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.song-count {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.playlist-actions {
  display: flex;
  gap: 0.5rem;
}

.form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

/* Player */
.player-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--panel-border);
}

.player-header #player-info {
  flex: 1;
  min-width: 0;
}

.player-controls {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

#player-body {
  margin-top: 1rem;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 500px;
  opacity: 1;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

#player-body.collapsed {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  transform: scaleY(0.95);
  transform-origin: top;
}

.now-playing {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.now-playing .song-title {
  font-weight: 600;
  font-size: 1.1rem;
  color: #fff;
}

.now-playing .song-meta {
  color: var(--accent-hover);
  background: rgba(123, 44, 191, 0.15);
}

.no-content {
  color: var(--text-muted);
  font-style: italic;
  padding: 3rem 2rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 255, 255, 0.1);
}

.error {
  color: var(--danger-color);
  padding: 0.75rem;
  margin: 0.5rem 0;
  background: rgba(230, 57, 70, 0.1);
  border-left: 4px solid var(--danger-color);
  border-radius: var(--radius-sm);
}

.error-border {
  border-color: var(--danger-color) !important;
  box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.2) !important;
}

.shake {
  animation: shake 0.4s cubic-bezier(.36, .07, .19, .97) both;
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

.hidden {
  display: none !important;
}

/* About Section */
.about-content {
  padding: 1rem;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.about-content h3 {
  font-size: 1.3rem;
  margin: 2rem 0 1rem;
  color: #fff;
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.about-list li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-main);
}

.about-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-hover);
}

.about-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.about-footer p {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Drag and Drop */
.song-item.dragging,
.playlist-item.dragging {
  opacity: 0.5;
  transform: scale(0.98);
}

.song-item.drag-over {
  border-color: var(--accent-color);
  box-shadow: 0 2px 8px rgba(123, 44, 191, 0.3);
}

.playlist-item.drag-over-playlist {
  background: var(--item-active);
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(123, 44, 191, 0.4);
}

/* Loop Button */
.btn-loop {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
  padding-bottom: 2px;
}

.btn-loop:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-loop.active {
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-hover);
  box-shadow: 0 0 8px rgba(123, 44, 191, 0.4);
}

.btn-loop.active:hover {
  background: var(--accent-hover);
}

/* ── Editor panel ── */

#editor-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
#editor-panel.hidden { display: none; }

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.editor-header h2 { margin: 0; font-size: 1rem; }

.editor-name-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--panel-border);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 1.4rem;
  font-weight: 600;
  padding: 4px 0 8px;
  outline: none;
  transition: border-color 0.2s;
}
.editor-name-input::placeholder { color: rgba(255,255,255,0.15); }
.editor-name-input:focus        { border-color: var(--accent-color); }
.editor-name-input.error {
  border-color: var(--danger-color);
  animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

/* Smart input */
.input-row { display: flex; gap: 8px; }
.input-row .input-field {
  flex: 1; margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
}
.input-row .input-field.error {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.2);
  animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}
#input-error {
  font-size: 0.75rem;
  color: var(--danger-color);
  opacity: 0;
  transition: opacity 0.15s;
  margin-left: auto;
}
.hint-chip { font-size: 0.72rem; color: var(--text-muted); opacity: 0.6; }
.hint-chip code {
  font-family: 'Courier New', monospace;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--panel-border);
  padding: 1px 5px; border-radius: 3px;
  color: var(--text-muted);
}
.hints { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 6px; }

/* Track list */
#editor-track-list { display: flex; flex-direction: column; gap: 4px; }

.track-row {
  display: grid;
  grid-template-columns: 28px 22px 1fr auto auto auto auto;
  align-items: center;
  gap: 8px;
  background: var(--item-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 0 10px 0 14px;
  height: 48px;
  transition: background 0.15s, border-color 0.15s;
}
.track-row:hover          { background: var(--item-hover); border-color: var(--panel-border); }
.track-row.status-is-blocked {
  border-color: rgba(230, 57, 70, 0.2);
  background: rgba(230, 57, 70, 0.04);
}
.track-row.dragging    { opacity: 0.3; }
.track-row.drag-over   { border-color: var(--accent-color); background: var(--item-active); }

.track-num {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem; color: var(--text-muted);
  opacity: 0.5; user-select: none;
}
.drag-handle {
  color: var(--text-muted); opacity: 0.3; font-size: 1rem;
  cursor: grab; user-select: none;
  transition: opacity 0.15s;
  display: flex; align-items: center;
}
.track-row:hover .drag-handle { opacity: 0.7; }
.drag-handle:active { cursor: grabbing; }

.track-title-input {
  background: transparent; border: none;
  color: var(--text-main); font-family: var(--font-family);
  font-size: 0.95rem; outline: none;
  width: 100%; min-width: 0;
}
.track-title-input::placeholder { color: rgba(255,255,255,0.2); font-style: italic; }

.track-row .song-meta {
  max-width: 130px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; cursor: default;
}
.provider-y { color: #ff4444; background: rgba(255,0,0,0.1); }
.provider-s { color: #ff7733; background: rgba(255,85,0,0.1); }

.status-badge {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; font-size: 0.7rem; font-weight: 700;
  flex-shrink: 0; cursor: default; transition: color 0.2s;
}
.status-pending { color: var(--text-muted); opacity: 0.5; animation: spin 1.2s linear infinite; }
.status-ok      { color: var(--success-color); }
.status-blocked { color: var(--danger-color); }
.status-unknown { color: var(--text-muted); opacity: 0.35; }
@keyframes spin { to { transform: rotate(360deg); } }

.icon-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); opacity: 0.35; font-size: 0.9rem;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  transition: opacity 0.1s, color 0.1s, background 0.1s;
  flex-shrink: 0; text-decoration: none;
}
.track-row:hover .icon-btn      { opacity: 0.6; }
.icon-btn:hover                  { opacity: 1 !important; background: rgba(255,255,255,0.08); }
.icon-btn.remove-btn:hover       { color: var(--danger-color); }
.icon-btn:disabled               { opacity: 0.15 !important; cursor: default; }
.icon-btn:disabled:hover         { background: none; }

/* Tracks header */
.tracks-header {
  display: flex; align-items: center;
  justify-content: space-between; margin-bottom: 10px;
}
.track-count { font-size: 0.8rem; color: var(--text-muted); }

/* Export */
.export-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
@media (max-width: 540px) { .export-grid { grid-template-columns: 1fr; } }

.export-card {
  background: var(--panel-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md); overflow: hidden;
}
.export-card-header {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(0,0,0,0.2);
}
.export-card-title {
  font-size: 0.72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-muted);
}
.export-copy-btn {
  font-size: 0.72rem; font-weight: 500; font-family: inherit;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--panel-border);
  color: var(--text-muted); padding: 3px 10px;
  border-radius: var(--radius-sm); cursor: pointer; transition: all 0.15s;
}
.export-copy-btn:hover  { color: var(--text-main); border-color: var(--accent-color); }
.export-copy-btn.copied { color: var(--success-color); border-color: var(--success-color); }

.export-textarea {
  width: 100%; background: transparent; border: none;
  color: var(--text-muted); font-family: 'Courier New', monospace;
  font-size: 0.75rem; line-height: 1.7; padding: 12px 14px;
  resize: none; outline: none; min-height: 72px; max-height: 200px; overflow-y: auto;
}
.export-textarea::placeholder { color: rgba(255,255,255,0.1); }

.editor-footer {
  display: flex; justify-content: space-between;
  align-items: center; gap: 10px; flex-wrap: wrap;
  padding-top: 16px; border-top: 1px solid var(--panel-border);
}

/* ── Playlist rows ── */
.playlist-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }

.playlist-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 6px 0 10px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  user-select: none;
}
.playlist-item:hover  { background: var(--item-hover); }
.playlist-item.active {
  background: var(--item-active);
  border-color: rgba(123,44,191,0.35);
}
.playlist-item.dragging    { opacity: 0.35; }
.playlist-item.drag-over-playlist { border-color: var(--accent-color); }

.playlist-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-main);
}

/* Action buttons — hidden until row is hovered */
.playlist-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.action-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.85rem;
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.12s, color 0.12s, background 0.12s;
  flex-shrink: 0;
}
.playlist-item:hover .action-btn { opacity: 0.55; }
.action-btn:hover { opacity: 1 !important; background: rgba(255,255,255,0.08); }
.action-btn.danger:hover { color: var(--danger-color); }

/* Loop toggle — always visible, minimal */
.btn-loop {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1rem;
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  opacity: 0.3;
  transition: opacity 0.12s, color 0.12s;
  flex-shrink: 0;
}
.btn-loop:hover  { opacity: 0.7; }
.btn-loop.active { color: var(--accent-color); opacity: 1; }