/* ============================================================
   Editor — grid 版面、頂列、圖層面板、舞台、屬性面板
============================================================ */
.app {
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  grid-template-rows: 40px 1fr 320px;
  grid-template-areas:
    "top top top"
    "layers stage props"
    "tl tl tl";
  height: 100vh;
}
.app.hidden { display: none; }

/* ---------- 頂列 ---------- */
.top {
  grid-area: top;
  display: flex; align-items: center; gap: 14px;
  padding: 0 14px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--mono); font-weight: 600; font-size: 13px; }
.brand b { color: var(--accent); }
.brand .tag { font-size: 10px; color: var(--text-2); margin-left: 6px; font-weight: 400; }

.top-btn { padding: 5px 10px; border-radius: 3px; color: var(--text-1); font-size: 12px; }
.top-btn:hover { background: var(--bg-3); color: var(--text-0); }
.top-btn.primary {
  background: var(--accent); color: var(--accent-deep); font-weight: 600;
}
.top-btn.primary:hover { background: var(--accent-hover); }

.top-spacer { flex: 1; }
.top-stat { font-family: var(--mono); font-size: 10px; color: var(--text-2); display: flex; gap: 12px; }
.top-stat b { color: var(--text-1); font-weight: 400; }

.undo-group { display: flex; gap: 2px; }
.undo-group button { padding: 5px 8px; border-radius: 3px; color: var(--text-2); }
.undo-group button:hover:not(:disabled) { background: var(--bg-3); color: var(--text-0); }
.undo-group button:disabled { opacity: 0.3; cursor: not-allowed; }

/* ---------- 圖層面板 ---------- */
.layers {
  grid-area: layers;
  background: var(--bg-1); border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
}
.panel-head {
  height: 30px; padding: 0 12px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 10px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--text-2);
  border-bottom: 1px solid var(--line);
}
.add-btns { display: flex; gap: 2px; }
.layers-list { flex: 1; overflow-y: auto; padding: 4px 0; }
.layer {
  padding: 7px 12px; display: flex; align-items: center; gap: 8px;
  font-size: 12px; cursor: pointer; border-left: 2px solid transparent;
  position: relative;
}
.layer:hover { background: var(--bg-2); }
.layer.sel { background: var(--bg-3); border-left-color: var(--accent); }
.layer-icn { width: 14px; height: 14px; color: var(--text-2); flex-shrink: 0; }
.layer.sel .layer-icn { color: var(--accent); }
.layer-name {
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
/* rename inline 編輯 */
.layer-name-input {
  flex: 1;
  background: var(--bg-0);
  border: 1px solid var(--accent);
  border-radius: 2px;
  color: var(--text-0);
  padding: 2px 4px;
  font-size: 12px;
  outline: none;
  min-width: 0;
}
.layer-vis {
  width: 16px; height: 16px; color: var(--text-2); opacity: 0.6;
  display: inline-flex; align-items: center; justify-content: center; border-radius: 2px;
}
.layer-vis:hover { opacity: 1; background: var(--bg-3); }
.layer-vis.on { opacity: 1; color: var(--text-0); }

/* ---------- 舞台 ---------- */
.stage-area {
  grid-area: stage;
  background:
    repeating-conic-gradient(#0d0e11 0% 25%, #0a0b0e 0% 50%) 0 0 / 24px 24px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.stage-area.drag-over {
  background:
    repeating-conic-gradient(rgba(34, 211, 184, 0.12) 0% 25%, rgba(34, 211, 184, 0.05) 0% 50%) 0 0 / 24px 24px;
}
.stage-area.drag-over::after {
  content: '放開以匯入素材';
  position: absolute; inset: 20px;
  border: 2px dashed var(--accent); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 16px; font-weight: 600;
  pointer-events: none;
}
.stage-wrap {
  position: relative;
  box-shadow: 0 12px 48px rgba(0,0,0,0.6), 0 0 0 1px var(--line);
}
#stage { display: block; background: #000; }
.stage-meta {
  position: absolute; bottom: 12px; left: 12px;
  font-family: var(--mono); font-size: 10px; color: var(--text-2);
  background: rgba(10,11,14,0.8); padding: 4px 8px; border-radius: 3px;
  backdrop-filter: blur(8px);
}
.gpu-badge {
  position: absolute; top: 12px; right: 12px;
  font-family: var(--mono); font-size: 9px;
  background: rgba(74,222,128,0.12); color: var(--ok);
  padding: 4px 8px; border-radius: 3px;
}

/* 自動關鍵幀模式時，舞台會有紅色邊框 */
.stage-area.auto-kf .stage-wrap {
  box-shadow: 0 12px 48px rgba(0,0,0,0.6), 0 0 0 2px var(--err);
}

/* ---------- 屬性面板 ---------- */
.props {
  grid-area: props;
  background: var(--bg-1); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; overflow: hidden;
}
.props-body { flex: 1; overflow-y: auto; }
.sec { border-bottom: 1px solid var(--line); padding: 6px 0 10px; }
.sec-h {
  padding: 8px 12px 6px;
  font-size: 9px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--text-2);
  display: flex; align-items: center; justify-content: space-between;
}
.row { padding: 3px 12px; display: flex; align-items: center; gap: 6px; min-height: 24px; }
.lbl { width: 60px; font-size: 11px; color: var(--text-1); display: flex; align-items: center; gap: 5px; flex-shrink: 0; }
.kf-dot {
  width: 9px; height: 9px; border-radius: 50%;
  border: 1px solid var(--text-2); cursor: pointer; flex-shrink: 0;
  transition: all 0.12s;
}
.kf-dot:hover { border-color: var(--accent); }
.kf-dot.on {
  background: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 5px var(--accent-glow);
}
input.f, select.f {
  flex: 1; min-width: 0; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 3px; padding: 3px 7px; color: var(--text-0);
  font-size: 11px; font-family: var(--mono);
}
input.f:focus, select.f:focus { outline: none; border-color: var(--accent); }
select.f { cursor: pointer; }
.pair { display: flex; gap: 4px; flex: 1; }
.pair input {
  flex: 1; min-width: 0; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 3px; padding: 3px 7px; color: var(--text-0); font-size: 11px; font-family: var(--mono);
}
.pair input:focus { outline: none; border-color: var(--accent); }
input[type="color"].f { padding: 1px; height: 22px; cursor: pointer; }

/* Solo / filter 提示標籤 */
.solo-tag {
  font-size: 9px; color: var(--accent); text-transform: none; letter-spacing: 0;
  font-family: var(--mono);
}

/* ---------- Bezier 編輯器 ---------- */
.bez-wrap {
  margin: 8px 12px 4px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 4px; padding: 8px;
}
.bez-title { font-size: 10px; color: var(--text-1); margin-bottom: 6px; display: flex; justify-content: space-between; }
.bez-title .vals { font-family: var(--mono); font-size: 9px; color: var(--text-2); }
#bezCanvas { display: block; cursor: crosshair; border-radius: 2px; background: var(--bg-1); width: 100%; }
.bez-presets { display: flex; gap: 3px; margin-top: 6px; flex-wrap: wrap; }
.bez-preset {
  flex: 1; min-width: 0; padding: 3px 4px;
  font-size: 9px; font-family: var(--mono);
  background: var(--bg-3); border: 1px solid transparent; border-radius: 2px;
  color: var(--text-1); white-space: nowrap; overflow: hidden;
}
.bez-preset:hover { background: var(--line); color: var(--text-0); }
.bez-preset.active { border-color: var(--accent); color: var(--accent); }
.vel-wrap {
  margin: 4px 12px 8px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 4px; padding: 6px 8px 4px;
}
.vel-title { font-size: 10px; color: var(--text-1); margin-bottom: 3px; }
#velCanvas { display: block; width: 100%; }

.empty {
  padding: 32px 16px; text-align: center;
  color: var(--text-2); font-size: 11px; line-height: 1.7;
}
.empty b { color: var(--text-1); display: block; margin-bottom: 6px; font-size: 12px; }
.empty kbd { font-family: var(--mono); background: var(--bg-3); padding: 1px 5px; border-radius: 2px; font-size: 10px; color: var(--accent-2); }