/* ============================================================
   PAGE WRAPPER
   ============================================================ */
.editor-page {
  padding: var(--space-6);
  min-height: calc(100vh - var(--nav-height));
}

.editor-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-6);
  align-items: start;
}

/* ============================================================
   TOP BAR
   ============================================================ */
.editor-topbar {
  height: var(--nav-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding-inline: var(--space-6);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 200;
}

.editor-topbar__title {
  font-weight: 600;
  font-size: var(--text-base);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================================
   VIDEO PANEL (left)
   ============================================================ */
.editor-video-panel {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
}

.editor-yt-wrap {
  position: relative;
  padding-top: 56.25%;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.editor-yt-wrap iframe,
.editor-yt-wrap #editor-yt-player {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Timeline */
.editor-timeline-wrap {
  margin-top: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-4) var(--space-3);
}

.editor-timeline-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.editor-time-display {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-surface-alt);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  min-width: 44px;
  text-align: center;
}

.editor-timeline-hint-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.editor-timeline {
  height: 44px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  position: relative;
  cursor: crosshair;
  border: 1.5px solid var(--color-border);
  overflow: visible;
  transition: border-color var(--transition-fast);
}

.editor-timeline:hover { border-color: var(--color-primary); }

.editor-timeline__track {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 5px;
  transform: translateY(-50%);
  background: var(--color-border);
  border-radius: var(--radius-pill);
  pointer-events: none;
}

.editor-timeline__progress {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  width: 0%;
  transition: width 0.3s linear;
}

/* Timeline pin */
.editor-pin {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  z-index: 10;
  background: var(--color-surface);
  border: 2.5px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 0.75rem;
  transition: transform var(--transition-elastic), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-sm);
  user-select: none;
}

.editor-pin--note { border-color: var(--color-accent); color: var(--color-accent); }
.editor-pin--selected {
  box-shadow: 0 0 0 4px rgba(117,89,184,0.25), var(--shadow-md);
  transform: translate(-50%, -50%) scale(1.35);
  z-index: 20;
}
.editor-pin:hover  { transform: translate(-50%, -50%) scale(1.3); box-shadow: var(--shadow-md); }
.editor-pin:active { cursor: grabbing; }

.editor-pin__tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text-primary);
  color: #fff;
  font-size: 10px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  max-width: 180px;
  white-space: normal;
  text-align: center;
  line-height: 1.4;
}

.editor-pin:hover .editor-pin__tooltip { opacity: 1; }

/* ============================================================
   IP PANEL (right) — shared wrapper
   ============================================================ */
.editor-ip-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
  max-height: calc(100vh - var(--nav-height) - var(--space-12));
  display: flex;
  flex-direction: column;
}

.ip-panel-view {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.ip-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  flex-shrink: 0;
}

.ip-panel-header__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
}

/* ============================================================
   LIST VIEW
   ============================================================ */
.ip-list-scroll {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.ip-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.ip-list-item:last-child { border-bottom: none; }
.ip-list-item:hover      { background: rgba(117,89,184,0.04); }
.ip-list-item--selected  {
  background: rgba(117,89,184,0.08);
  border-left: 3px solid var(--color-primary);
}

.ip-list-item__icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.ip-list-item__icon--mcq  { background: rgba(117,89,184,0.1); color: var(--color-primary); }
.ip-list-item__icon--note { background: rgba(90,131,217,0.1);  color: var(--color-accent); }

.ip-list-item__body { flex: 1; min-width: 0; }
.ip-list-item__time {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.ip-list-item__preview {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ip-list-item__del {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-danger);
  opacity: 0;
  cursor: pointer;
  background: none; border: none;
  transition: opacity var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
}

.ip-list-item:hover .ip-list-item__del     { opacity: 1; }
.ip-list-item__del:hover                   { background: rgba(217,79,79,0.1); }

/* Empty state inside list */
.ip-list-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
  gap: var(--space-3);
}

.ip-list-empty__icon { font-size: 2.5rem; opacity: 0.3; }
.ip-list-empty__title { font-size: var(--text-base); font-weight: 600; }
.ip-list-empty__body  { font-size: var(--text-sm); }

/* ============================================================
   FORM VIEW
   ============================================================ */
.ip-form-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ip-form-section {
  margin-bottom: var(--space-5);
}

.ip-form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

/* Timestamp row */
.ip-timestamp-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.ip-timestamp-badge {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.ip-timestamp-actions {
  display: flex;
  gap: var(--space-2);
}

/* Type selector cards */
.ip-type-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.ip-type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  background: var(--color-surface);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  font-family: inherit;
  text-align: center;
}

.ip-type-card i    { font-size: 1.6rem; color: var(--color-text-muted); }
.ip-type-card span { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-primary); }
.ip-type-card small{ font-size: var(--text-xs); color: var(--color-text-muted); }

.ip-type-card:hover { border-color: var(--color-primary-light); background: rgba(117,89,184,0.04); }

.ip-type-card--active {
  border-color: var(--color-primary);
  background: rgba(117,89,184,0.06);
}
.ip-type-card--active i    { color: var(--color-primary); }
.ip-type-card--active span { color: var(--color-primary); }

/* MCQ options */
.ip-options-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.ip-options-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.ip-options-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.ip-option-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.ip-option-card--correct {
  border-color: var(--color-success);
  background: rgba(61,170,110,0.06);
}

.ip-option-radio {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  font-size: 0.6rem;
  color: #fff;
}

.ip-option-card--correct .ip-option-radio {
  border-color: var(--color-success);
  background: var(--color-success);
}

.ip-option-card--correct .ip-option-radio::after {
  content: '✓';
  font-weight: 700;
}

.ip-option-letter {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  width: 18px;
  flex-shrink: 0;
}

.ip-option-card--correct .ip-option-letter { color: var(--color-success); }

.ip-option-card input[type="text"] {
  flex: 1;
  border: none;
  background: transparent;
  box-shadow: none;
  padding: 0;
  font-size: var(--text-sm);
}

.ip-option-card input[type="text"]:focus { box-shadow: none; border: none; }

/* Form actions */
.ip-form-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.ip-form-actions .btn--primary { flex: 1; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .editor-layout { grid-template-columns: 1fr; }
  .editor-video-panel { position: static; }
  .editor-ip-panel { position: static; max-height: none; }
}