:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel2: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --border: #334155;
  --danger: #f87171;
  --ok: #34d399;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: #020617;
}
h1 { margin: 0 0 4px; font-size: 22px; }
p { margin: 0; color: var(--muted); }
main {
  display: grid;
  grid-template-columns: 340px minmax(420px, 1fr) 420px;
  height: calc(100vh - 78px);
}
aside, .viewer, .editor {
  min-height: 0;
  overflow: auto;
  border-right: 1px solid var(--border);
}
.sidebar, .editor { padding: 16px; }
.viewer { padding: 16px; background: #020617; }
label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}
input, select, textarea {
  width: 100%;
  margin-top: 5px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; }
button {
  border: 1px solid #075985;
  border-radius: 8px;
  background: #0369a1;
  color: white;
  padding: 9px 12px;
  cursor: pointer;
}
button:hover { background: #0284c7; }
button.danger { border-color: #991b1b; background: #b91c1c; }
button.danger:hover { background: #dc2626; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.actions.stacked { margin-bottom: 14px; }
.stats, .meta-panel, #messageBox {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  padding: 12px;
  color: var(--muted);
  white-space: pre-wrap;
}
.list { display: flex; flex-direction: column; gap: 8px; }
.item-card {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  cursor: pointer;
}
.item-card:hover, .item-card.active { border-color: var(--accent); }
.item-card strong { color: var(--text); display: block; margin-bottom: 4px; }
.item-card small { color: var(--muted); display: block; }
.media-panel {
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: black;
  overflow: auto;
}
.media-panel img.frame-main {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
}
.placeholder { color: var(--muted); }
.clip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  width: 100%;
  padding: 10px;
}
.clip-grid figure { margin: 0; }
.clip-grid img { width: 100%; border-radius: 8px; border: 1px solid var(--border); }
.clip-grid figcaption { color: var(--muted); font-size: 12px; text-align: center; margin-top: 3px; }
.meta-panel { margin-top: 12px; }
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
#messageBox { min-height: 80px; overflow: auto; }
.ok { color: var(--ok); }
.error { color: var(--danger); }
@media (max-width: 1200px) {
  main { grid-template-columns: 300px 1fr; }
  .editor { grid-column: 1 / -1; height: auto; border-top: 1px solid var(--border); }
}