:root {
  --bg: #15171c;
  --bg-elevated: #1d2028;
  --bg-card: #232733;
  --bg-card-hover: #292e3c;
  --border: #333849;
  --text: #e8e9ee;
  --text-dim: #9aa0b4;
  --accent: #5b8cff;
  --accent-hover: #7aa2ff;
  --danger: #e0596b;
  --danger-hover: #ea7383;
  --radius: 10px;
  --type-ambience: #4f8a5b;
  --type-music: #3f6fb0;
  --type-sfx: #b0763f;
  --type-other: #7a5cb0;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f5f8;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #eef0f5;
    --border: #dadde5;
    --text: #1c1e26;
    --text-dim: #6b7186;
    --accent: #3f6fd8;
    --accent-hover: #2f5cc4;
    --danger: #c9384a;
    --danger-hover: #b12d3e;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

button, input, select {
  font: inherit;
  color: inherit;
}

#app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */

.sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.app-title {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.sidebar-section h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin: 0 0 0.6rem;
}

.collections-list {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 40vh;
  overflow-y: auto;
}

.collection-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: var(--radius);
  padding: 0.4rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid transparent;
}

.collection-item.active {
  border-color: var(--accent);
}

.collection-item button.collection-name {
  flex: 1;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.15rem 0;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collection-item .icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
  padding: 0.2rem;
  font-size: 0.9rem;
  line-height: 1;
}

.collection-item .icon-btn:hover { opacity: 1; }

.collections-empty {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 0.75rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.4;
  margin: 0 0 0.6rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.15s ease;
}

.btn:hover { background: var(--bg-card-hover); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

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

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-block { width: 100%; }

/* Breathing room between "Neue Sammlung" and the save actions, and between
   the two save buttons themselves. */
#new-collection-btn { margin-top: 0.75rem; }

.sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.toggle-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.icon-btn-plain {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 1rem;
  padding: 0.3rem;
}
.icon-btn-plain:hover { color: var(--text); }

/* Main */

.main {
  flex: 1;
  padding: 1.25rem 1.5rem 3rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.topbar-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.add-layer {
  margin-bottom: 1.5rem;
}

.add-layer-row {
  display: flex;
  gap: 0.5rem;
}

.add-layer-row input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
}

.add-layer-row input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.add-layer-row button {
  width: 3rem;
  font-size: 1.3rem;
  font-weight: bold;
}

.field-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0.4rem 0 0;
}

.empty-hint {
  color: var(--text-dim);
  font-size: 0.9rem;
  text-align: center;
  margin-top: 3rem;
  line-height: 1.5;
}

/* Layers */

.layers-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.layer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 4px solid var(--type-other);
  overflow: hidden;
}

.layer-card[data-type="ambience"] { border-left-color: var(--type-ambience); }
.layer-card[data-type="music"] { border-left-color: var(--type-music); }
.layer-card[data-type="sfx"] { border-left-color: var(--type-sfx); }
.layer-card[data-type="other"] { border-left-color: var(--type-other); }

.layer-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.8rem;
  flex-wrap: wrap;
}

.layer-type-select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.4rem;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.layer-title-input {
  flex: 1 1 140px;
  min-width: 90px;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  padding: 0.2rem 0;
  font-size: 0.95rem;
}

.layer-title-input:hover, .layer-title-input:focus {
  border-bottom-color: var(--border);
  outline: none;
}

.layer-volume {
  flex: 1 1 100px;
  min-width: 80px;
  accent-color: var(--accent);
}

.layer-volume-value {
  width: 2.4rem;
  text-align: right;
  color: var(--text-dim);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.layer-playstop-btn {
  flex-shrink: 0;
  min-width: 5.2rem;
}

.layer-playstop-btn.is-playing {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.layer-error-badge {
  color: var(--danger);
  font-size: 0.75rem;
  flex-basis: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
}

.layer-error-link {
  color: var(--accent);
  white-space: nowrap;
}

.env-warning {
  border: 1px solid var(--danger);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 0.9rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

.env-warning strong {
  display: block;
  color: var(--danger);
  margin-bottom: 0.4rem;
}

.env-warning p {
  margin: 0 0 0.5rem;
  color: var(--text-dim);
}

.env-warning-code {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  margin-bottom: 0.5rem;
  user-select: all;
}

.env-warning a {
  color: var(--accent);
}

.layer-error-badge:empty { display: none; }

.layer-expand-btn {
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.layer-card.expanded .layer-expand-btn {
  transform: rotate(180deg);
}

.layer-expanded-panel {
  display: none;
  padding: 0 0.8rem 0.9rem;
  border-top: 1px solid var(--border);
}

.layer-card.expanded .layer-expanded-panel {
  display: block;
  padding-top: 0.7rem;
}

.layer-player-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 0.6rem;
}

.layer-player-wrapper.collapsed {
  position: absolute;
  visibility: hidden;
  width: 1px;
  height: 1px;
  padding-top: 0;
  overflow: hidden;
  top: -9999px;
  left: -9999px;
}

.layer-player-wrapper iframe,
.layer-player-wrapper > div {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.layer-start-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.layer-start-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Modal */

.modal-root:empty { display: none; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  max-width: 420px;
  width: 100%;
}

.modal-box h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.modal-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.7rem;
  margin: 0.5rem 0 1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Toasts */

.toast-root {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 200;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* Responsive sidebar drawer */

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 60;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0.5rem 0.8rem;
  cursor: pointer;
}

.sidebar-backdrop {
  display: none;
}

@media (max-width: 800px) {
  .sidebar-toggle { display: inline-flex; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 55;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 4px 0 16px rgba(0,0,0,0.35);
  }

  #app.sidebar-open .sidebar {
    transform: translateX(0);
  }

  #app.sidebar-open .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 50;
  }

  .main {
    padding-top: 3.5rem;
  }
}

/* ---------------- Playlist / Queue ---------------- */

.layer-playlist-badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-dim);
  white-space: nowrap;
}

.layer-playlist-badge[hidden] { display: none; }

.layer-playlist-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.layer-playlist-row[hidden],
.layer-start-row[hidden],
.layer-queue[hidden] { display: none; }

.layer-track-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 12rem;
  min-width: 0;
}

.layer-queue {
  margin-top: 0.75rem;
}

.layer-queue-list {
  /* The items are flex containers, which suppresses list markers — so the
     position is drawn from a counter instead. */
  list-style: none;
  counter-reset: queue-item;
  margin: 0 0 0.6rem;
  padding: 0;
}

.layer-queue-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
  font-size: 0.85rem;
}

.layer-queue-item::before {
  counter-increment: queue-item;
  content: counter(queue-item) ".";
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  min-width: 1.4em;
}

.layer-queue-item:nth-child(odd) { background: var(--bg-elevated); }

.layer-queue-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-queue-item .icon-btn-plain:disabled {
  opacity: 0.3;
  cursor: default;
}

.layer-queue-add {
  display: flex;
  gap: 0.5rem;
}

.layer-queue-input {
  flex: 1;
  min-width: 0;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.85rem;
}

.layer-queue-input:focus {
  outline: none;
  border-color: var(--accent);
}

.layer-queue-error { margin-top: 0.4rem; }

/* ---------------- Action-Buttons (One-Shot-Sounds) ---------------- */

.action-board {
  margin-bottom: 1.5rem;
  padding: 0.9rem 1rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin: 0 0 0.75rem;
}

.section-hint {
  text-transform: none;
  letter-spacing: 0;
  font-weight: normal;
}

.actions-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.actions-list:empty { margin-bottom: 0; }

.actions-empty {
  margin: 0 0 0.75rem;
  text-align: left;
  font-size: 0.85rem;
}

.action-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: hidden;
  flex: 0 1 auto;
  max-width: 100%;
}

.action-trigger-row {
  display: flex;
  align-items: stretch;
}

.action-btn {
  flex: 1;
  min-width: 6rem;
  max-width: 16rem;
  padding: 0.7rem 1rem;
  border: none;
  background: none;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.action-btn:hover { background: var(--bg-card-hover); }
.action-btn:active { transform: translateY(1px); }

.action-btn.is-firing {
  background: var(--type-sfx);
  color: #fff;
}

.action-edit-btn {
  padding: 0 0.6rem;
  border-left: 1px solid var(--border);
}

.action-panel {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0.7rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
  min-width: 20rem;
}

.action-panel[hidden] { display: none; }

.action-label-input,
.action-time-input {
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.85rem;
}

.action-time-input {
  width: 4.5rem;
  font-variant-numeric: tabular-nums;
}

.action-label-input:focus,
.action-time-input:focus {
  outline: none;
  border-color: var(--accent);
}

.action-volume-row,
.action-time-row,
.action-foot-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.action-foot-row { justify-content: space-between; }
.action-volume-row .action-volume { flex: 1; min-width: 6rem; }
.action-volume-value { font-variant-numeric: tabular-nums; }
.action-source-link { color: var(--accent); }

/* The one-shot player is only needed to hear the cut while editing. */
.action-player-host {
  aspect-ratio: 16 / 9;
  width: 100%;
  max-width: 22rem;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
}

.action-player-host iframe { width: 100%; height: 100%; border: 0; }

.sc-widget { width: 100%; height: 100%; border: 0; }

.layer-notice {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  flex-basis: 100%;
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 0 0.9rem 0.5rem;
}

.layer-notice:empty { display: none; }

.layer-notice-btn {
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
}

/* Diagnose-Zeile, nur mit ?debug=1 sichtbar */
.layer-debug { display: none; }

.debug-on .layer-debug {
  display: block;
  padding: 0 0.9rem 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.7rem;
  color: var(--text-dim);
  word-break: break-all;
}