/* ============ PDF 预览盖章工具 · 紧凑视觉 ============ */
:root {
  --bg: #f3f5fa;
  --panel: #ffffff;
  --border: #e4e9f2;
  --border-strong: #d0d8e6;
  --text: #1c2433;
  --text-2: #3d4a5e;
  --muted: #68748a;
  --primary: #2f6bff;
  --primary-d: #1d55e0;
  --primary-soft: #eaf0ff;
  --danger: #e2524a;
  --success: #2e9e6b;
  --shadow-sm: 0 1px 2px rgba(16, 32, 72, .05), 0 2px 8px rgba(16, 32, 72, .06);
  --shadow-md: 0 2px 6px rgba(16, 32, 72, .06), 0 12px 28px rgba(16, 32, 72, .12);
  --radius: 10px;
  --radius-sm: 7px;
  --topbar-h: 56px;
  /* 字体系统 */
  --font-sans: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Source Han Sans SC",
               "Microsoft YaHei", "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
  --font-num: "HarmonyOS Sans SC", "MiSans", "Segoe UI", Roboto, -apple-system, sans-serif;
  --font-mono: "Cascadia Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 数字等宽对齐（页码、金额、计数等） */
b, strong { font-weight: 650; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-h);
  padding: 0 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .3px;
  color: var(--text);
  font-family: var(--font-sans);
}
.brand-logo {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, #4f7dff 0%, #2f6bff 55%, #2053d8 100%);
  box-shadow: 0 2px 6px rgba(47, 107, 255, .35);
}
.brand-logo svg { width: 17px; height: 17px; }
.top-actions { display: flex; gap: 8px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 13px;
  height: 34px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-2);
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .3px;
  font-family: var(--font-sans);
  transition: all .18s cubic-bezier(.34, 1.56, .64, 1);
  user-select: none;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; flex: 0 0 auto; }
.btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, #4f7dff, #2f6bff); color: #fff; border-color: transparent; box-shadow: 0 3px 8px rgba(47, 107, 255, .3); }
.btn.primary:hover { background: linear-gradient(135deg, #3f6ff2, #2459e6); color: #fff; transform: translateY(-1px); box-shadow: 0 5px 14px rgba(47, 107, 255, .4); }
.btn.primary:active { transform: translateY(1px); }
.btn.small { height: 28px; padding: 0 10px; font-size: 12.5px; border-radius: 8px; }
.btn.full { width: 100%; justify-content: center; margin-top: 8px; }
.btn.danger { color: var(--danger); border-color: #f0c4c0; }
.btn.danger:hover { background: #fdf0ef; border-color: var(--danger); color: var(--danger); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary:disabled { background: #a9c0ff; box-shadow: none; }
.btn.primary:disabled:hover { background: #a9c0ff; }

/* ---------- 布局 ---------- */
.layout { display: flex; height: calc(100% - var(--topbar-h)); }

.sidebar {
  width: 304px;
  flex: 0 0 304px;
  overflow-y: auto;
  padding: 12px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, #f6f8ff 0%, #fdf6ff 60%, #f2faf6 100%);
}

/* 滚动条 */
.sidebar::-webkit-scrollbar, .results::-webkit-scrollbar, .ops-list::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb, .results::-webkit-scrollbar-thumb, .ops-list::-webkit-scrollbar-thumb { background: #cbd3e2; border-radius: 8px; }
.sidebar::-webkit-scrollbar-thumb:hover, .results::-webkit-scrollbar-thumb:hover, .ops-list::-webkit-scrollbar-thumb:hover { background: #b3bdd0; }
.sidebar::-webkit-scrollbar-track, .results::-webkit-scrollbar-track, .ops-list::-webkit-scrollbar-track { background: transparent; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .18s ease, transform .18s ease;
}
.card:hover { box-shadow: 0 6px 18px rgba(60, 80, 180, .08); }
.card h3 {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 10px;
  font-size: 13.5px;
  font-weight: 650;
  letter-spacing: .2px;
  color: var(--text);
}
.card h3 svg {
  width: 16px;
  height: 16px;
  padding: 2px;
  border-radius: 6px;
  color: #fff;
}
.card:nth-child(1) h3 svg { background: linear-gradient(135deg, #4f7dff, #2f6bff); }
.card:nth-child(2) h3 svg { background: linear-gradient(135deg, #22b573, #1a9a5f); }
.card:nth-child(3) h3 svg { background: linear-gradient(135deg, #4f7dff, #2f6bff); }

/* ---------- 表单 ---------- */
.field { margin-bottom: 10px; }
.field label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 550;
  letter-spacing: .2px;
}
.field input[type="text"],
.field input[type="number"],
.field select,
.seam-grid select {
  width: 100%;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
  font-variant-numeric: tabular-nums;
}
.field input[type="text"]:focus,
.field input[type="number"]:focus,
.field select:focus,
.seam-grid select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 107, 255, .14);
}
.field input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: #dde4f0;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}
.field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  box-shadow: 0 1px 3px rgba(16, 32, 72, .25);
  cursor: grab;
  transition: transform .12s;
}
.field input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
.field input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  cursor: grab;
}
.field output { font-size: 12.5px; color: var(--primary); font-weight: 600; margin-left: 4px; }

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  letter-spacing: .2px;
}
.checkbox input { margin: 0; accent-color: var(--primary); width: 14px; height: 14px; }

/* ---------- 印章缩略图 ---------- */
.stamp-thumb {
  width: 100%;
  height: 88px;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12.5px;
  margin-bottom: 8px;
  overflow: hidden;
  background: #fafbff;
  transition: border-color .15s;
}
.stamp-thumb:hover { border-color: var(--primary); }
.stamp-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* ---------- 标签页 ---------- */
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.tab { flex: 1; }
.tab input { display: none; }
.tab span {
  display: block;
  text-align: center;
  padding: 7px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 12.5px;
  cursor: pointer;
  color: var(--muted);
  background: #fafbff;
  transition: all .18s cubic-bezier(.34, 1.56, .64, 1);
  font-weight: 550;
  letter-spacing: .3px;
}
.tab span:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.tab input:checked + span {
  background: linear-gradient(135deg, #4f7dff, #2f6bff);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 3px 8px rgba(47, 107, 255, .35);
  transform: translateY(-1px);
}

.hint { font-size: 12px; color: var(--muted); margin: 0 0 8px; line-height: 1.7; letter-spacing: .2px; }
.hint strong { color: var(--text); font-weight: 600; }

/* ---------- 关键词结果 ---------- */
.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 8px 0;
  padding: 0 2px;
}
.results { list-style: none; margin: 0; padding: 0; max-height: 210px; overflow-y: auto; }
.results li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 5px;
  font-size: 12.5px;
  cursor: pointer;
  transition: all .12s;
  background: #fff;
  font-variant-numeric: tabular-nums;
}
.results li:hover { border-color: var(--primary); background: var(--primary-soft); }
.results li input { margin: 0; accent-color: var(--primary); width: 14px; height: 14px; }
.muted { color: var(--muted); font-size: 12.5px; }
.key-block { border-top: 1px dashed var(--border); padding-top: 10px; margin-top: 2px; }
.key-block .btn-row { margin-bottom: 6px; }
.key-block .checkbox { display: flex; align-items: center; gap: 8px; width: 100%; }
.key-block input[type="range"] { flex: 1; min-width: 70px; }
.btn-row { display: flex; gap: 8px; margin-bottom: 8px; }
.btn-row .btn { flex: 1; justify-content: center; }
.seam-grid { display: flex; gap: 8px; }
.seam-grid .field { flex: 1; margin-bottom: 8px; }

/* ---------- 盖章队列列表 ---------- */
.ops-count { margin-bottom: 8px; }
.ops-list {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  max-height: 220px;
  overflow-y: auto;
}
.ops-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 5px;
  font-size: 12.5px;
  background: #fff;
  font-variant-numeric: tabular-nums;
  transition: border-color .12s, background .12s;
}
.ops-list li:hover { border-color: var(--primary); background: var(--primary-soft); }
.op-idx {
  flex: 0 0 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: #eef2fb;
  color: var(--primary);
  font-weight: 700;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.op-tag {
  flex: 0 0 auto;
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 11.5px;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--primary);
}
.op-tag.seam { background: #eafaf2; color: var(--success); }
.op-desc {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
.op-del {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: all .12s;
}
.op-del:hover { background: #fdeceb; color: var(--danger); }

/* ---------- 预览区 ---------- */
.preview { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.preview-toolbar .btn { height: 30px; }
.page-info {
  font-size: 13px;
  min-width: 72px;
  text-align: center;
  color: var(--text);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: .5px;
}
.page-info span { color: var(--muted); }
.spacer { flex: 1; }
.zoom-group { display: flex; align-items: center; gap: 6px; }
.btn.icon { width: 30px; padding: 0; justify-content: center; }
.zoom-value {
  min-width: 46px;
  text-align: center;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  user-select: none;
  letter-spacing: .3px;
}

.canvas-wrap {
  position: relative;
  flex: 1;
  overflow: auto;
  background:
    radial-gradient(circle at 1px 1px, #dfe4ee 1px, transparent 0) 0 0 / 22px 22px,
    linear-gradient(160deg, #eef1f8 0%, #f5f0fa 100%);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px;
}
.canvas-box {
  position: relative;
  display: inline-block;
  line-height: 0;
}
#pdfCanvas {
  background: #fff;
  box-shadow: var(--shadow-md);
  max-width: none;
  display: block;
  border-radius: 2px;
}
.stamp-overlay {
  position: absolute;
  transform: translate(-50%, -50%);
  cursor: grab;
  opacity: .92;
  pointer-events: auto;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, .3));
}
.stamp-overlay:active { cursor: grabbing; }

/* ---------- 空状态引导卡片（未打开 PDF 时） ---------- */
/* 强制 hidden 生效（display:flex 会覆盖浏览器默认的 [hidden] 隐藏） */
.empty-tip[hidden] { display: none; }
/* 提示可见时隐藏空 canvas，避免出现灰色小方块 */
.canvas-wrap:has(.empty-tip:not([hidden])) .canvas-box { display: none; }
.empty-tip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
  border: 1.5px dashed var(--border-strong);
  border-radius: 16px;
  padding: 34px 46px;
  box-shadow: var(--shadow-sm);
  pointer-events: auto;
  cursor: pointer;
  max-width: 82%;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.empty-tip:hover {
  border-color: var(--primary);
  background: #f7f9ff;
  box-shadow: 0 4px 16px rgba(47, 107, 255, .12);
}
.tip-icon {
  width: 42px;
  height: 42px;
  color: var(--primary);
  opacity: .75;
  margin-bottom: 4px;
}
.tip-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--text);
  letter-spacing: .3px;
}
.tip-sub {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.8;
  letter-spacing: .2px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: #1c2433;
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 13.5px;
  letter-spacing: .3px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .28);
  z-index: 50;
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
  max-width: 80vw;
}
.toast:not([hidden]) { opacity: 1; transform: translateX(-50%) translateY(0); }