:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1f232c;
  --border: #2a2f3a;
  --text: #e6e9ef;
  --muted: #8b93a3;
  --accent: #6c8cff;
  --accent-2: #4f6bff;
  --danger: #ff6b6b;
  --ok: #4ad295;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.brand { font-weight: 600; font-size: 16px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
  padding: 22px; max-width: 1100px; margin: 0 auto;
}
@media (max-width: 820px) { .layout { grid-template-columns: 1fr; } }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px;
}
.card h2 { font-size: 14px; margin: 18px 0 10px; color: var(--text); }
.card h2:first-child { margin-top: 0; }
.lbl { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 13px; }
.input {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2);
  color: var(--text); font-size: 14px; outline: none;
}
.input:focus { border-color: var(--accent); }
.area { resize: vertical; font-family: inherit; }
select.input { cursor: pointer; }
.row { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }

.dropzone {
  position: relative; border: 1.5px dashed var(--border); border-radius: 10px;
  min-height: 180px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; overflow: hidden; background: var(--panel-2);
}
.dropzone.drag { border-color: var(--accent); background: #1b2030; }
.dz-inner { text-align: center; color: var(--muted); padding: 20px; }
.dz-icon { font-size: 34px; margin-bottom: 6px; color: var(--accent); }
.preview { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #000; }

button { font-family: inherit; cursor: pointer; border: none; border-radius: 8px; font-size: 14px; }
.primary {
  display: inline-block; text-align: center; text-decoration: none;
  background: var(--accent-2); color: #fff; padding: 11px 18px; font-weight: 600;
  transition: .15s;
}
.primary:hover { background: var(--accent); }
.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); padding: 8px 14px; }
.ghost:hover { color: var(--text); border-color: var(--accent); }
#btnGenerate { width: 100%; margin-top: 18px; }

.progress { margin-top: 18px; }
.bar { height: 10px; border-radius: 6px; background: var(--panel-2); overflow: hidden; border: 1px solid var(--border); }
.bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width .4s; }

.result { margin-top: 18px; }
.video { width: 100%; border-radius: 10px; background: #000; border: 1px solid var(--border); }
.error {
  margin-top: 14px; padding: 10px 12px; border-radius: 8px;
  background: rgba(255,107,107,.12); color: var(--danger); border: 1px solid rgba(255,107,107,.3);
}

.adv { margin-top: 14px; }
.adv summary { cursor: pointer; color: var(--muted); }
.adv summary:hover { color: var(--text); }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal[hidden] { display: none; }
.modal-box {
  width: 440px; max-width: 92vw; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px 22px;
}
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.modal-head h3 { margin: 0; }
.modal-box.wide { width: 620px; max-width: 94vw; max-height: 86vh; overflow: auto; }

.diag .verdict { padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; font-weight: 600; }
.diag .verdict.ok { background: rgba(74,210,149,.14); color: var(--ok); border: 1px solid rgba(74,210,149,.35); }
.diag .verdict.fail { background: rgba(255,107,107,.14); color: var(--danger); border: 1px solid rgba(255,107,107,.35); }
.diag .verdict.warn { background: rgba(255,193,77,.14); color: #ffc14d; border: 1px solid rgba(255,193,77,.35); }

.diag .chk { padding: 9px 11px; border-radius: 8px; margin-bottom: 8px; background: var(--panel-2); border: 1px solid var(--border); }
.diag .chk .line1 { display: flex; align-items: center; gap: 8px; }
.diag .chk .badge { font-size: 11px; font-weight: 700; padding: 1px 7px; border-radius: 999px; }
.diag .badge.pass { background: rgba(74,210,149,.18); color: var(--ok); }
.diag .badge.fail { background: rgba(255,107,107,.18); color: var(--danger); }
.diag .chk .step { color: var(--muted); font-size: 12px; }
.diag .chk .addr { color: var(--accent); word-break: break-all; }
.diag .chk .detail { color: var(--muted); font-size: 12px; margin-top: 3px; word-break: break-all; }

.diag .issue { margin-top: 10px; padding: 12px; border-radius: 8px; background: rgba(255,107,107,.1); border: 1px solid rgba(255,107,107,.3); }
.diag .issue .type { font-weight: 700; color: var(--danger); }
.diag .issue .addr { color: var(--accent); word-break: break-all; }
.diag .issue .msg { margin: 4px 0; }
.diag .issue .act { color: var(--muted); font-size: 12px; white-space: pre-wrap; }
.diag .issue .meta { color: var(--muted); font-size: 12px; margin-top: 6px; word-break: break-all; }
.diag .loading { color: var(--muted); padding: 10px 0; }