/* ======================================================================
 * 密锦源 · 视频对比展示中心  样式体系
 * 风格：Frame.io — 深色电影院投影室
 * 背景: Obsidian #0a0a13 + 宇宙渐变
 * 强调色: Iris Glow 蓝 #6199f6  /  Twilight 紫 #4f4f80
 * ==================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
:root {
  --bg: #0a0a13;
  --bg-2: #0f0f1d;
  --surface: rgba(22, 22, 38, 0.72);
  --surface-2: rgba(30, 30, 52, 0.9);
  --border: rgba(97, 153, 246, 0.18);
  --border-2: rgba(255, 255, 255, 0.07);
  --iris: #6199f6;
  --iris-soft: rgba(97, 153, 246, 0.16);
  --twilight: #4f4f80;
  --violet: #9a7bff;
  --gold: #c6a87a;
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.12);
  --ok: #22c55e;
  --text: #e7e9f5;
  --text-2: #9fa4c3;
  --text-3: #5c6085;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-lift: 0 24px 60px rgba(0,0,0,0.55), 0 2px 8px rgba(97,153,246,0.08);
  --glow-iris: 0 0 0 1px var(--border), 0 0 36px rgba(97,153,246,0.22);
}

body {
  margin: 0;
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(1200px 800px at 12% -10%, rgba(97,153,246,0.18), transparent 60%),
    radial-gradient(1000px 700px at 110% 10%, rgba(154,123,255,0.14), transparent 55%),
    radial-gradient(900px 900px at 50% 120%, rgba(79,79,128,0.22), transparent 60%),
    linear-gradient(180deg, #080812 0%, #0a0a13 60%, #0a0a16 100%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    linear-gradient(transparent 0 99%, rgba(255,255,255,0.025) 100%) 0 0 / 100% 3px,
    linear-gradient(90deg, transparent 0 99%, rgba(255,255,255,0.02) 100%) 0 0 / 3px 100%;
  opacity: 0.35;
  mix-blend-mode: screen;
}

/* ================= 顶部 Chrome ================= */
.top-chrome {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid var(--border-2);
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(10,10,19,0.85), rgba(10,10,19,0.55));
}
.top-left { display: flex; align-items: center; gap: 12px; }
.brand-iris { color: var(--iris); font-size: 20px; filter: drop-shadow(0 0 8px var(--iris)); }
.brand { letter-spacing: 4px; font-weight: 700; color: #fff; font-size: 15px; }
.brand-divider { width: 1px; height: 18px; background: var(--border-2); }
.brand-sub { font-size: 13px; color: var(--text-2); letter-spacing: 1px; }
.top-right { display: flex; align-items: center; gap: 12px; }
.search-wrap input {
  width: 260px;
  background: rgba(15, 15, 29, 0.8);
  border: 1px solid var(--border-2);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 10px;
  outline: none;
  transition: all 0.2s;
  font-size: 13px;
}
.search-wrap input:focus { border-color: var(--iris); box-shadow: 0 0 0 3px var(--iris-soft); }

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border-2);
  background: var(--surface);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13.5px;
  letter-spacing: 0.4px;
  transition: transform 0.08s ease, background 0.2s ease, border-color 0.2s, box-shadow 0.2s, color 0.2s;
  user-select: none;
}
.btn:hover:not(:disabled) { border-color: var(--iris); color: #fff; box-shadow: var(--glow-iris); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn .plus { font-weight: 700; font-size: 15px; color: var(--iris); }
.btn-primary {
  background: linear-gradient(135deg, rgba(97,153,246,0.85), rgba(154,123,255,0.75));
  border-color: rgba(255,255,255,0.22);
  color: #fff;
  box-shadow: 0 8px 24px rgba(97,153,246,0.28);
}
.btn-primary:hover:not(:disabled) { background: linear-gradient(135deg, #6199f6, #9a7bff); color: #fff; }
.btn-ghost { background: transparent; }
.btn-danger { color: #fca5a5; border-color: rgba(239,68,68,0.35); background: var(--danger-soft); }
.btn-danger:hover:not(:disabled) { border-color: var(--danger); color: #fff; background: rgba(239,68,68,0.2); box-shadow: 0 0 20px rgba(239,68,68,0.2); }
.btn-play { background: linear-gradient(135deg, #22c55e, #6199f6); color: #fff; border-color: rgba(255,255,255,0.2); }
.btn-play:hover:not(:disabled) { filter: brightness(1.06); color: #fff; border-color: #fff; }
.btn-close { padding: 6px 10px; }

/* ================= 主体布局 ================= */
.main {
  position: relative; z-index: 1;
  flex: 1; min-height: 0;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  padding: 16px 20px 0 20px;
  overflow: hidden;
}

/* ------ 侧栏 ------ */
.sidebar {
  border: 1px solid var(--border-2);
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-lift);
}
.sidebar-head { padding: 18px 20px 14px; border-bottom: 1px solid var(--border-2); }
.kicker {
  font-size: 11px; letter-spacing: 4px;
  color: var(--iris);
  padding: 4px 10px;
  border: 1px solid rgba(97,153,246,0.3);
  background: var(--iris-soft);
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 10px;
}
.head-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.head-sub { font-size: 12px; color: var(--text-3); }

.record-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px 10px 16px;
  display: flex; flex-direction: column; gap: 8px;
}
.record-list::-webkit-scrollbar { width: 6px; }
.record-list::-webkit-scrollbar-thumb { background: rgba(97,153,246,0.25); border-radius: 3px; }

.record-item {
  position: relative;
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border-2);
  background: rgba(15, 15, 29, 0.6);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}
.record-item:hover { border-color: var(--iris); transform: translateY(-1px); box-shadow: var(--glow-iris); }
.record-item.active {
  border-color: var(--iris);
  background: linear-gradient(135deg, rgba(97,153,246,0.12), rgba(154,123,255,0.08));
  box-shadow: var(--glow-iris);
}
.record-thumb {
  width: 46px; height: 46px; border-radius: 10px;
  background: linear-gradient(135deg, #1a1a2e, #2a2550);
  border: 1px solid var(--border-2);
  object-fit: cover;
  overflow: hidden;
}
.record-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.record-thumb-empty {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-3); font-size: 18px;
}
.record-info .rec-title {
  font-size: 13.5px; font-weight: 600; color: #fff;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 4px;
}
.record-info .rec-meta { display: flex; gap: 8px; align-items: center; font-size: 11px; color: var(--text-3); }
.rec-has { display: inline-flex; gap: 2px; }
.rec-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--text-3); }
.rec-dot.has { background: var(--iris); box-shadow: 0 0 6px var(--iris); }
.rec-empty {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.8;
}
.rec-empty .kicker { margin-bottom: 12px; }

/* ------ 舞台 ------ */
.stage {
  min-height: 0; overflow-y: auto;
  padding: 6px 10px 20px 6px;
  display: flex; flex-direction: column; gap: 18px;
}
.stage::-webkit-scrollbar { width: 8px; }
.stage::-webkit-scrollbar-thumb { background: rgba(97,153,246,0.2); border-radius: 4px; }

.stage-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px; align-items: end;
  padding: 18px 22px 14px;
  border: 1px solid var(--border-2);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  backdrop-filter: blur(8px);
}
.stage-title-wrap .kicker { margin-bottom: 10px; }
.stage-title {
  margin: 0 0 8px 0;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.25;
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(120deg, #ffffff 0%, #cfd8ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stage-desc {
  margin: 0;
  color: var(--text-2);
  font-size: 14px; line-height: 1.7;
  max-width: 760px;
}
.meta-row {
  margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px;
}
.meta-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-size: 11.5px; letter-spacing: 0.5px;
}
.meta-chip b { color: var(--iris); font-weight: 600; }

.stage-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

/* ------ 三栏对比 ------ */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 0 4px 40px;
  max-width: 50%;      /* 缩小到原来一半宽度 */
  margin: 0 auto;       /* 居中 */
}

.card {
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(15, 15, 29, 0.92), rgba(10, 10, 19, 0.92));
  box-shadow: var(--shadow-lift);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--iris); box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 40px rgba(97,153,246,0.18); }
.card-photo:hover { box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 40px rgba(198,168,122,0.14); border-color: var(--gold); }
.card-video:hover { box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 40px rgba(97,153,246,0.22); border-color: var(--iris); }
.card-result:hover { box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 40px rgba(154,123,255,0.25); border-color: var(--violet); }

.card-header {
  padding: 10px 12px 8px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border-2);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), transparent);
  gap: 8px;
  flex-wrap: nowrap;
}
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.5px;
  border: 1px solid var(--border-2);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  white-space: nowrap;          /* 强制不折行，防止"参考视频"掉成两行 */
  flex-shrink: 0;               /* 不被右侧 role 挤压 */
}
.tag .glow {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 10px var(--violet);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.25); }
}
.tag-photo { border-color: rgba(198,168,122,0.4); color: var(--gold); background: rgba(198,168,122,0.06); }
.tag-ref   { border-color: rgba(97,153,246,0.4);  color: var(--iris); background: var(--iris-soft); }
.tag-result{ border-color: rgba(154,123,255,0.45);color: #d8caff; background: rgba(154,123,255,0.08); }
.card-role {
  font-size: 10px; color: var(--text-3); letter-spacing: 0.4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 1;
  min-width: 0;
}

.card-media {
  position: relative;
  aspect-ratio: 9/16;
  background:
    linear-gradient(135deg, rgba(97,153,246,0.08), rgba(154,123,255,0.06)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.015) 0 10px, transparent 10px 20px);
  border-bottom: 1px solid var(--border-2);
  overflow: hidden;
}
.card-media img, .card-media video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.card-photo .card-media img { filter: saturate(1.02) contrast(1.01); }
.card-result .card-media img, .card-result .card-media video {
  filter: saturate(1.08) contrast(1.05) brightness(0.95);
}
.card-result::before {
  /* 紫罗兰光晕 */
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  top: -60px; right: -60px;
  background: radial-gradient(closest-side, rgba(154,123,255,0.35), transparent 70%);
  pointer-events: none;
}
.card { position: relative; }
.card-photo::before {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  top: -60px; left: -60px;
  background: radial-gradient(closest-side, rgba(198,168,122,0.22), transparent 70%);
  pointer-events: none;
}
.card-video::before {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  top: -60px; left: 50%; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(97,153,246,0.26), transparent 70%);
  pointer-events: none;
}

/* 空槽提示 */
.empty-slot {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px;
  color: var(--text-3);
  padding: 24px;
  text-align: center;
}
.empty-icon { font-size: 44px; filter: drop-shadow(0 0 20px rgba(97,153,246,0.35)); }
.empty-title { font-size: 16px; font-weight: 600; color: var(--text-2); }
.empty-desc { font-size: 12.5px; line-height: 1.6; }

/* 播放按钮（视频覆盖层） */
.play-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, rgba(10,10,19,0.1), rgba(10,10,19,0.45));
  transition: opacity 0.25s;
  cursor: pointer;
}
.play-overlay:hover { background: linear-gradient(180deg, rgba(10,10,19,0.15), rgba(10,10,19,0.6)); }
.play-btn-big {
  width: 72px; height: 72px; border-radius: 50%;
  background: rgba(10,10,19,0.75);
  border: 2px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 28px; padding-left: 6px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.6), 0 0 30px rgba(97,153,246,0.35);
  backdrop-filter: blur(6px);
  transition: transform 0.15s ease, box-shadow 0.2s;
}
.play-overlay:hover .play-btn-big {
  transform: scale(1.06);
  box-shadow: 0 16px 40px rgba(0,0,0,0.7), 0 0 42px rgba(97,153,246,0.55);
}
.card-media.playing .play-overlay { opacity: 0; pointer-events: none; }

/* AI RESULT 角标 */
.corner-tag {
  position: absolute;
  top: 14px; right: 14px; z-index: 3;
  padding: 4px 10px;
  background: rgba(154,123,255,0.25);
  border: 1px solid rgba(154,123,255,0.45);
  color: #d8caff;
  font-size: 10.5px; letter-spacing: 1.5px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.card-footer { padding: 14px 18px 16px; background: rgba(255,255,255,0.015); }
.foot-title { font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 10px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  background: rgba(255,255,255,0.02);
}
.chip-blue {
  color: var(--iris);
  border-color: rgba(97,153,246,0.35);
  background: var(--iris-soft);
}

/* ================= 底部 Chrome ================= */
.bottom-chrome {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 28px;
  border-top: 1px solid var(--border-2);
  backdrop-filter: blur(6px);
  background: linear-gradient(0deg, rgba(10,10,19,0.9), rgba(10,10,19,0.6));
  font-size: 11.5px;
  color: var(--text-3);
  letter-spacing: 0.5px;
}
.bot-center { color: var(--iris); opacity: 0.8; }
.bot-right { color: var(--iris); letter-spacing: 3px; font-size: 14px; }

/* ================= 弹窗 ================= */
.modal-mask {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(5, 5, 12, 0.72);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
  animation: fadeIn 0.25s ease;
}
.modal-mask.hidden { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 100%;
  max-width: 1100px;
  max-height: calc(100vh - 64px);
  display: flex; flex-direction: column;
  border: 1px solid var(--border);
  background:
    radial-gradient(800px 400px at 0% 0%, rgba(97,153,246,0.14), transparent 60%),
    radial-gradient(600px 400px at 100% 0%, rgba(154,123,255,0.12), transparent 60%),
    linear-gradient(180deg, #0e0e1e, #0a0a16);
  border-radius: 20px;
  box-shadow: 0 40px 120px rgba(0,0,0,0.75), 0 0 60px rgba(97,153,246,0.15);
  animation: rise 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes rise { from { transform: translateY(18px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-2);
}
.modal-head h2 { margin: 4px 0 0 0; font-size: 20px; font-weight: 700; color: #fff; }
.modal-body {
  flex: 1; overflow-y: auto;
  padding: 22px 24px 12px;
  display: flex; flex-direction: column; gap: 18px;
}
.modal-body::-webkit-scrollbar { width: 8px; }
.modal-body::-webkit-scrollbar-thumb { background: rgba(97,153,246,0.25); border-radius: 4px; }

.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 12.5px; color: var(--text-2); letter-spacing: 0.6px; }
.form-row input[type=text],
.form-row textarea {
  background: rgba(15, 15, 29, 0.85);
  border: 1px solid var(--border-2);
  color: var(--text);
  padding: 11px 14px;
  border-radius: 10px;
  outline: none;
  transition: all 0.2s;
  font-family: inherit;
  font-size: 13.5px;
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus {
  border-color: var(--iris);
  box-shadow: 0 0 0 3px var(--iris-soft);
  background: rgba(15, 15, 29, 0.95);
}

/* 上传网格 */
.upload-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.upload-slot {
  border: 1px solid var(--border-2);
  background: rgba(15, 15, 29, 0.5);
  border-radius: var(--radius);
  padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
  transition: all 0.2s;
}
.upload-slot:hover { border-color: var(--iris); }
.slot-title { font-size: 13px; font-weight: 600; color: #fff; }
.slot-hint { font-size: 11px; color: var(--text-3); margin-top: -6px; }

.dropzone {
  position: relative;
  display: block;
  aspect-ratio: 9/11;
  border: 1.5px dashed rgba(97,153,246,0.35);
  background: linear-gradient(135deg, rgba(97,153,246,0.04), rgba(154,123,255,0.03));
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  overflow: hidden;
  outline: none;
}
.dropzone:hover, .dropzone:focus-visible {
  border-color: var(--iris);
  background: linear-gradient(135deg, rgba(97,153,246,0.08), rgba(154,123,255,0.06));
  box-shadow: 0 0 0 3px var(--iris-soft);
}
.dropzone.dragover {
  border-color: #fff;
  background: rgba(97,153,246,0.14);
  transform: scale(1.01);
}
.dz-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 16px; text-align: center;
  pointer-events: none;
}
.dropzone.has-media .dz-inner { display: none; }
.dz-icon { font-size: 40px; filter: drop-shadow(0 0 14px rgba(97,153,246,0.35)); }
.dz-strong { font-size: 13px; color: var(--text-2); font-weight: 600; }
.dz-weak { font-size: 11px; color: var(--text-3); }

.dz-preview {
  position: absolute; inset: 0;
}
.dz-preview img, .dz-preview video { width: 100%; height: 100%; object-fit: cover; display: block; }
.dz-preview .dz-clear {
  position: absolute; top: 8px; right: 8px; z-index: 2;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(10,10,19,0.8);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; line-height: 1;
  backdrop-filter: blur(4px);
}
.dz-preview .dz-clear:hover { background: rgba(239,68,68,0.85); }
.dz-preview .vid-label {
  position: absolute; bottom: 10px; left: 10px; z-index: 2;
  padding: 3px 10px; border-radius: 999px;
  background: rgba(10,10,19,0.8);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff; font-size: 10.5px;
  backdrop-filter: blur(4px);
}

.upload-progress {
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
  position: relative;
}
.upload-progress::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--iris), var(--violet));
  transform-origin: left;
  animation: progress 1.2s cubic-bezier(0.3, 0.8, 0.3, 1) infinite;
}
@keyframes progress {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.modal-foot {
  display: flex; justify-content: flex-end; gap: 12px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border-2);
}

/* ================= Toast ================= */
.toast {
  position: fixed; z-index: 100;
  top: 28px; left: 50%; transform: translateX(-50%) translateY(-8px);
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(10,10,19,0.95);
  border: 1px solid var(--border);
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.4px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.6), 0 0 30px rgba(97,153,246,0.2);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  opacity: 0;
  pointer-events: none;
}
.toast:not(.hidden) { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.toast-err { border-color: rgba(239,68,68,0.5); box-shadow: 0 16px 40px rgba(0,0,0,0.6), 0 0 30px rgba(239,68,68,0.2); }
.toast.toast-ok { border-color: rgba(34,197,94,0.5); box-shadow: 0 16px 40px rgba(0,0,0,0.6), 0 0 30px rgba(34,197,94,0.2); }

/* ================= 响应式 ================= */
@media (max-width: 1180px) {
  .main { grid-template-columns: 270px 1fr; }
  .upload-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .main { grid-template-columns: 1fr; }
  .sidebar { max-height: 38vh; }
  .compare-grid { grid-template-columns: 1fr; }
  .stage-head { grid-template-columns: 1fr; }
  .stage-actions { justify-content: flex-start; }
  .search-wrap input { width: 180px; }
  .top-chrome { padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
}