:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --primary: #4f7cff;
  --primary-hover: #3d6bf0;
  --ok: #2ecc71;
  --warn: #f5a623;
  --err: #ff5c5c;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.boot { padding: 60px; text-align: center; color: var(--muted); }

/* ---------- 布局 ---------- */
.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 210px;
  flex: 0 0 210px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.brand { font-size: 17px; font-weight: 600; padding: 0 10px 16px; }
.brand small { display: block; font-weight: 400; font-size: 12px; color: var(--muted); }

.nav-item {
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  border: none;
  background: none;
  text-align: left;
  font: inherit;
  width: 100%;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-sep { height: 1px; background: var(--border); margin: 10px 4px; }
.nav-foot { margin-top: auto; font-size: 13px; color: var(--muted); padding: 0 10px; }

.main { flex: 1; padding: 26px 30px; max-width: 1200px; min-width: 0; }
h1 { font-size: 21px; margin: 0 0 4px; }
.sub { color: var(--muted); font-size: 13px; margin: 0 0 22px; }

/* ---------- 组件 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.card h3 { margin: 0 0 14px; font-size: 15px; }

label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
label:first-child { margin-top: 0; }

input, textarea, select {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 11px;
  border-radius: 8px;
  font: inherit;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
textarea { resize: vertical; min-height: 92px; }

.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
}
.btn:hover:not(:disabled) { background: var(--primary-hover); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.ghost { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.btn.sm { padding: 5px 11px; font-size: 13px; }
.btn.danger { background: var(--err); }

.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 15px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.seg button.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 150px; }
.row.tight { align-items: center; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; white-space: nowrap; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
}
.tag.ok { color: var(--ok); border-color: #235c3c; }
.tag.run { color: var(--primary); border-color: #2c4590; }
.tag.bad { color: var(--err); border-color: #6e2b2b; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px; }
.stat .k { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 22px; font-weight: 600; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .v.ok { color: var(--ok); }
.stat .v.bad { color: var(--err); }

.msg { padding: 10px 13px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.msg.err { background: #351c1c; color: #ffb4b4; border: 1px solid #6e2b2b; }
.msg.ok { background: #16321f; color: #a8e6c0; border: 1px solid #235c3c; }
.msg.info { background: var(--panel-2); color: var(--muted); border: 1px solid var(--border); }

.hint { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.money { font-variant-numeric: tabular-nums; }
.price-tip { color: var(--primary); font-weight: 600; }

.auth-wrap { max-width: 380px; margin: 9vh auto; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.auth-tabs button { flex: 1; }

video { width: 100%; border-radius: 8px; background: #000; margin-top: 10px; }
.vid-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }

.codes {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.pager { display: flex; gap: 10px; align-items: center; margin-top: 14px; }

@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .sidebar { width: auto; flex: none; flex-direction: row; overflow-x: auto; padding: 10px; }
  .brand, .nav-foot, .nav-sep { display: none; }
  .nav-item { white-space: nowrap; width: auto; }
  .main { padding: 16px; }
}

/* ---------- 参考图上传 ---------- */
.upload-zone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--panel-2);
  transition: border-color .15s, background .15s;
}
.upload-zone:hover, .upload-zone.is-over {
  border-color: var(--primary);
  background: #1a1f2e;
}
.upload-zone.is-full { opacity: .5; pointer-events: none; }
.upload-inner { color: var(--muted); font-size: 13.5px; }
.upload-icon {
  font-size: 22px;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}

.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.ref-item {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel-2);
}
.ref-item.is-error { border-color: #6e2b2b; }
.ref-item img { width: 100%; height: 88px; object-fit: cover; display: block; }
.ref-ph {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
}
.ref-badge {
  position: absolute;
  top: 4px; left: 4px;
  background: rgba(0, 0, 0, .72);
  color: #fff;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 10px;
}
.ref-tools {
  position: absolute;
  top: 4px; right: 4px;
  display: flex;
  gap: 3px;
  opacity: 0;
  transition: opacity .12s;
}
.ref-item:hover .ref-tools { opacity: 1; }
.ref-del, .ref-mv {
  width: 20px; height: 20px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, .78);
  color: #fff;
  cursor: pointer;
  line-height: 1;
  font-size: 13px;
  padding: 0;
}
.ref-del:hover { background: var(--err); }
.ref-mv:hover { background: var(--primary); }
.ref-meta {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ref-item.is-uploading { opacity: .65; }

/* ---------- 缩略图可点可拖 ---------- */
.ref-item[draggable="true"] { cursor: pointer; }
.ref-item[draggable="true"]:hover { border-color: var(--primary); }
.ref-item.is-dragging { opacity: .4; }

/* ---------- @ 提及面板 ---------- */
.prompt-wrap { position: relative; }
.mention-panel {
  position: absolute;
  left: 0; right: 0;
  top: calc(100% + 4px);
  z-index: 30;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .45);
  padding: 6px;
  max-height: 210px;
  overflow: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.mention-panel[hidden] { display: none; }
.mention-item {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 9px 5px 5px;
  cursor: pointer;
  color: var(--text);
  font: inherit;
  font-size: 13px;
  width: auto;
}
.mention-item:hover { border-color: var(--primary); background: #1a1f2e; }
.mention-item img { width: 30px; height: 30px; object-fit: cover; border-radius: 5px; }
.mention-item small { color: var(--muted); font-size: 11px; max-width: 90px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mention-empty { color: var(--muted); font-size: 13px; padding: 8px 10px; }

/* ---------- 素材库 ---------- */
.lib-head { display: flex; align-items: center; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 8px;
  margin-top: 10px;
  padding: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 290px;
  overflow: auto;
}
.lib-grid[hidden] { display: none; }
.lib-item {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
  cursor: pointer;
  background: var(--panel);
}
.lib-item:hover { border-color: var(--primary); }
.lib-item img { width: 100%; height: 72px; object-fit: cover; display: block; }
.lib-item.is-used { opacity: .45; cursor: default; }
.lib-item.is-used:hover { border-color: var(--border); }
.lib-used {
  position: absolute;
  top: 4px; left: 4px;
  background: var(--ok);
  color: #062313;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 9px;
}