:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --ink: #1f2733;
  --muted: #6b7686;
  --line: #e3e8f0;
  --primary: #1d4e89;
  --primary-d: #163c6b;
  --accent: #3a76c8;
  --ok: #1e9e62;
  --warn: #d98400;
  --danger: #d24b4b;
  --shadow: 0 2px 10px rgba(31, 39, 51, 0.06);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

/* ---------- 顶栏 ---------- */
.topbar {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #fff;
  padding: 18px 24px;
  box-shadow: var(--shadow);
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 30px; }
.topbar h1 { font-size: 20px; margin: 0; font-weight: 700; }
.topbar .sub { margin: 2px 0 0; font-size: 13px; opacity: 0.92; }

.container { max-width: 1080px; margin: 0 auto; padding: 24px 16px 40px; }

/* ---------- 面板 ---------- */
.panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  margin-bottom: 16px;
}
.mode-title { font-weight: 700; font-size: 14px; margin-bottom: 10px; }
.mode-hint { margin: 10px 0 0; font-size: 13px; color: var(--muted); }

/* 分段选择 */
.seg {
  display: inline-flex;
  background: #edf1f7;
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  flex-wrap: wrap;
}
.seg-item { position: relative; cursor: pointer; }
.seg-item input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg-item span {
  display: inline-block;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  border-radius: 8px;
  transition: all .15s;
  user-select: none;
}
.seg-item input:checked + span {
  background: var(--card);
  color: var(--primary);
  box-shadow: 0 1px 4px rgba(31, 39, 51, 0.12);
}
.seg-item:hover span { color: var(--ink); }

/* ---------- 拖放区 ---------- */
.dropzone {
  border: 2px dashed var(--line);
  background: var(--card);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  transition: border-color .15s, background .15s;
  cursor: pointer;
}
.dropzone.drag { border-color: var(--accent); background: #eaf2ff; }
.dz-inner { pointer-events: none; }
.dz-icon { font-size: 42px; }
.dz-title { font-size: 16px; margin: 10px 0 4px; font-weight: 600; }
.dz-hint { color: var(--muted); font-size: 13px; margin: 0; }
.linkbtn { background: none; border: none; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; padding: 0; }

/* ---------- 全局操作 ---------- */
.global-actions {
  display: flex; align-items: center; gap: 12px;
  margin: 18px 0 6px; flex-wrap: wrap;
}
.stat { color: var(--muted); font-size: 13px; margin-left: auto; }

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid transparent; border-radius: 8px;
  padding: 9px 16px; font-size: 14px; cursor: pointer; font-weight: 600;
  transition: filter .15s, background .15s;
  font-family: inherit;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-d); }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover:not(:disabled) { background: #f0f3f8; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ---------- 结果卡片 ---------- */
.card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  margin-top: 16px; overflow: hidden;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 13px 18px; border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.card-head .title { font-weight: 700; font-size: 14px; word-break: break-all; }
.card-head .meta { color: var(--muted); font-size: 12px; margin-top: 2px; }
.card-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.remove-btn {
  border: none; background: transparent; color: var(--muted); cursor: pointer;
  font-size: 16px; line-height: 1; padding: 4px 6px; border-radius: 6px;
}
.remove-btn:hover { background: #fdecec; color: var(--danger); }

.card-body { padding: 14px 18px 16px; }
.status-line { display: flex; align-items: center; gap: 10px; font-size: 13px; min-height: 22px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #c3ccd8; flex: none; }
.dot.run { background: var(--accent); animation: pulse 1s infinite; }
.dot.ok { background: var(--ok); }
.dot.err { background: var(--danger); }
.dot.idle { background: #c3ccd8; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

.bar { height: 6px; background: #edf1f7; border-radius: 4px; margin: 10px 0 0; overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--primary)); transition: width .2s; }
.bar.err > i { background: var(--danger); }

.summary { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; align-items: center; }
.badge {
  font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  background: #eef1f6; color: var(--muted);
}
.badge.pdf { background: #fdecec; color: #b03030; }
.badge.ofd { background: #e9f0fd; color: var(--primary); }
.badge.text { background: #e7f6ee; color: var(--ok); }
.badge.image { background: #fdf3e0; color: var(--warn); }
.badge.pages { background: #eef1f6; color: var(--muted); }
.err-msg { font-size: 13px; color: var(--danger); margin-top: 8px; word-break: break-all; }

/* ---------- 状态 ---------- */
.status {
  margin: 16px 0; padding: 12px 16px; border-radius: 10px;
  background: #fff7e6; color: #8a5a00; font-size: 14px; border: 1px solid #ffe0a3;
}
.status.err { background: #fdeaea; color: #a11; border-color: #f5c2c2; }

/* ---------- 页脚 ---------- */
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px 16px 40px; }
.footer code { background: #eef1f6; padding: 1px 6px; border-radius: 4px; font-size: 12px; }