/* video_studio/overlay_compositor.css — Overlay Compositor (Phase 2+).
 *
 * Built on the editor's existing --vs-* token system (no new token vocabulary;
 * the handoff mockup's --bg/--surface names are visual reference only). Every
 * value below resolves through tokens.css, so the rail follows the light/dark
 * theme swap automatically.
 *
 * .vs-alpha is the transparent-PNG checkerboard behind overlay thumbnails so a
 * cut-out asset reads as transparent rather than as a white/black rectangle. */

.vs-alpha {
  background-image:
    conic-gradient(#2c2c28 90deg, #3a3a34 90deg 180deg, #2c2c28 180deg 270deg, #3a3a34 270deg);
  background-size: 14px 14px;
}
html[data-theme="light"] .vs-alpha {
  background-image:
    conic-gradient(#dcdcd6 90deg, #f3f3ee 90deg 180deg, #dcdcd6 180deg 270deg, #f3f3ee 270deg);
}

.vs-overlay-count { color: var(--text-muted); font-weight: 500; font-size: 0.7rem; margin-left: 0.35rem; }

.vs-overlay-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem; }

.vs-overlay-card {
  border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden;
  background: var(--bg-card); cursor: grab; position: relative;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.vs-overlay-card:hover { border-color: var(--border-medium); }
.vs-overlay-card.selected { border-color: var(--brand-primary); box-shadow: var(--vs-shadow-sm); }

.vs-overlay-thumb {
  height: 78px; display: flex; align-items: center; justify-content: center; position: relative;
}
.vs-overlay-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; pointer-events: none; }

.vs-overlay-file {
  position: absolute; left: 6px; bottom: 6px;
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 9px;
  color: var(--text-secondary); background: var(--bg-panel); opacity: 0.9;
  padding: 1px 5px; border-radius: 3px;
  max-width: calc(100% - 12px); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.vs-overlay-meta { padding: 6px 8px 8px; }
.vs-overlay-name {
  font-family: var(--font-display); font-size: 0.78rem; color: var(--text-primary); line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.vs-overlay-sub { font-size: 0.65rem; color: var(--text-secondary); margin-top: 2px; }

.vs-overlay-check {
  position: absolute; top: 6px; right: 6px; width: 16px; height: 16px; border-radius: 8px;
  background: var(--brand-primary); color: #fff; display: none;
  align-items: center; justify-content: center; font-size: 9px;
}
.vs-overlay-card.selected .vs-overlay-check { display: flex; }

.vs-overlay-empty { color: var(--text-muted); font-size: 0.72rem; line-height: 1.5; padding: 0.5rem 0.25rem; }

/* "+ Add overlay" inline generator (Phase 2b) */
.vs-addov-panel {
  border: 1px solid var(--brand-primary); border-radius: var(--radius-md);
  background: var(--bg-card); padding: 0.6rem; margin-bottom: 0.6rem;
}
.vs-addov-input {
  width: 100%; resize: vertical; min-height: 48px; box-sizing: border-box;
  background: var(--bg-input); color: var(--text-primary);
  border: 1px solid var(--border-light); border-radius: var(--radius-sm);
  padding: 0.5rem 0.6rem; font-family: var(--font-body); font-size: 0.78rem; line-height: 1.4;
}
.vs-addov-input:focus { outline: none; border-color: var(--brand-primary); }
.vs-addov-input::placeholder { color: var(--text-muted); }
.vs-addov-row { display: flex; align-items: center; justify-content: space-between; margin-top: 0.5rem; gap: 0.5rem; }
.vs-addov-hint { font-size: 0.62rem; color: var(--text-muted); }
.vs-addov-go {
  background: var(--brand-primary); color: #fff; border: none; border-radius: var(--radius-sm);
  padding: 0.45rem 0.9rem; font-family: var(--font-display); font-size: 0.72rem; font-weight: 700;
  cursor: pointer; transition: background 0.15s;
}
.vs-addov-go:hover { background: var(--brand-secondary); }
.vs-addov-go:disabled { opacity: 0.6; cursor: default; }
.vs-addov-status { margin-top: 0.5rem; font-size: 0.7rem; color: var(--text-secondary); line-height: 1.4; }
.vs-addov-status.ok { color: var(--brand-primary); }
.vs-addov-status.err { color: #e06c5b; }
.vs-addov-status.warn { color: #d6a73a; }
.vs-addov-status a { color: var(--brand-primary); }

/* Lock-to-Scene (Phase 5) */
.vs-lock-btn {
  width: 100%; background: var(--brand-primary); color: #fff; border: none; border-radius: var(--radius-sm);
  padding: 0.6rem; font-family: var(--font-display); font-size: 0.78rem; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 0.4rem; transition: background 0.15s;
}
.vs-lock-btn:hover { background: var(--brand-secondary); }
.vs-lock-btn:disabled { opacity: 0.7; cursor: default; }
.vs-lock-badge {
  display: flex; align-items: center; gap: 0.45rem; background: var(--lime-soft, rgba(120,180,30,0.18));
  color: var(--brand-primary); border-radius: var(--radius-sm); padding: 0.55rem 0.6rem;
  font-family: var(--font-display); font-size: 0.74rem; font-weight: 700;
}
.vs-unlock {
  display: inline-flex; align-items: center; gap: 0.35rem; margin-top: 0.55rem;
  color: var(--text-secondary); font-size: 0.72rem; cursor: pointer;
}
.vs-unlock:hover { color: var(--text-primary); }
.vs-motion-hint {
  display: flex; align-items: flex-start; gap: 0.45rem; margin-bottom: 0.55rem;
  background: var(--gold-soft); border: 1px solid var(--gold); border-radius: var(--radius-sm);
  padding: 0.5rem 0.55rem; color: var(--gold-deep); font-size: 0.68rem; line-height: 1.4;
}

/* Locked overlay segment on the timeline: lock glyph + keyframe diamonds */
.timeline-clip.vs-locked { box-shadow: inset 0 0 0 1px var(--brand-primary); }
.vs-clip-lock { position: absolute; top: 2px; left: 4px; font-size: 9px; color: var(--brand-primary); z-index: 2; }
.vs-clip-kf {
  position: absolute; left: 14px; right: 6px; bottom: 3px; height: 7px;
  display: flex; justify-content: space-between; align-items: center; pointer-events: none;
}
.vs-kf-dia { width: 6px; height: 6px; background: var(--lime-deep, #5E8E16); transform: rotate(45deg); opacity: 0.9; }