:root {
  --bg: #f5f6f7;
  --card: #ffffff;
  --border: #e3e5e8;
  --border-strong: #d3d6da;
  --text: #1f2328;
  --text-dim: #6b7280;
  --text-faint: #9aa0a6;
  --accent: #374151;
  --accent-hover: #232b36;
  --row-alt: #fafbfc;
  --row-hover: #f2f4f6;
  --green: #3f9c5a;
  --green-bg: #eaf5ee;
  --red: #c0504d;
  --red-bg: #f7ecec;
  --amber: #b8862b;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
}

/* ---------- Topbar ---------- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  font-size: 26px;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.brand h1 { margin: 0; font-size: 18px; font-weight: 650; letter-spacing: .2px; }
.subtitle { margin: 2px 0 0; color: var(--text-dim); font-size: 12.5px; }

.stats { display: flex; gap: 8px; }
.stat {
  display: flex; flex-direction: column; align-items: center;
  min-width: 62px; padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.stat b { font-size: 18px; font-weight: 650; line-height: 1.1; }
.stat small { color: var(--text-dim); font-size: 11px; }
#stat-valid { color: var(--green); }
#stat-invalid { color: var(--red); }

/* ---------- Layout ---------- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}
.card-title {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 650;
  color: var(--text);
  letter-spacing: .3px;
}

/* ---------- Import ---------- */
.import-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  display: grid; place-items: center;
  min-height: 168px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: #eef0f2; }
.dropzone-inner { text-align: center; color: var(--text-dim); }
.dz-icon { font-size: 28px; display: block; margin-bottom: 8px; }
.dropzone-inner p { margin: 0; color: var(--text); }
.dropzone-inner small { color: var(--text-faint); }

.import-alt { display: flex; flex-direction: column; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { font-size: 12.5px; color: var(--text-dim); }
.row { display: flex; gap: 8px; }
.row input { flex: 1; }

input[type="text"], input[type="url"], input[type="number"],
input[type="search"], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  font-size: 13.5px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(55, 65, 81, .1);
}
textarea { resize: vertical; }

/* ---------- Buttons ---------- */
.btn {
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font-size: 13.5px;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn:hover { background: var(--row-hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.ghost { background: transparent; border-color: var(--border); color: var(--text-dim); }
.btn.ghost:hover { background: var(--row-hover); color: var(--text); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.hint { color: var(--text-faint); font-size: 12.5px; margin: 10px 0 0; }

/* ---------- Options ---------- */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px 18px;
  align-items: end;
}
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); }

/* ---------- List ---------- */
.list-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; margin-bottom: 12px; flex-wrap: wrap;
}
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.toolbar input[type="search"] { width: 200px; }
.toolbar select { width: auto; }

.list-actions {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap; margin-bottom: 12px;
}
.spacer { flex: 1; }
.sel-count { color: var(--text-dim); font-size: 12.5px; }

.progress-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.progress {
  flex: 1; height: 8px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 999px; overflow: hidden;
}
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.progress-text { color: var(--text-dim); font-size: 12.5px; min-width: 120px; text-align: right; }

/* ---------- Table ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.src-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.src-table th, .src-table td {
  padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.src-table thead th {
  background: var(--bg); color: var(--text-dim); font-weight: 600;
  position: sticky; top: 0; z-index: 1; white-space: nowrap;
}
.src-table tbody tr:nth-child(even) { background: var(--row-alt); }
.src-table tbody tr:hover { background: var(--row-hover); }
.src-table tbody tr:last-child td { border-bottom: none; }

.col-check { width: 36px; }
.col-time { width: 76px; white-space: nowrap; color: var(--text-dim); }
.col-status { width: 96px; }
.col-name { max-width: 220px; }
.col-url { max-width: 260px; }
.cell-name { font-weight: 550; }
.cell-url a { color: var(--text-dim); text-decoration: none; word-break: break-all; }
.cell-url a:hover { color: var(--accent); text-decoration: underline; }
.cell-group { color: var(--text-faint); font-size: 12px; }
.cell-reason { color: var(--text-dim); font-size: 12px; }
.src-table td.col-name, .src-table td.col-url { overflow: hidden; text-overflow: ellipsis; }
.src-table input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--accent); }

/* status badges */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 9px; border-radius: 999px; font-size: 12px; white-space: nowrap;
}
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.pending { background: var(--bg); color: var(--text-faint); }
.badge.checking { background: var(--bg); color: var(--text-dim); }
.badge.checking::before { animation: pulse 1s infinite; }
.badge.valid { background: var(--green-bg); color: var(--green); }
.badge.invalid { background: var(--red-bg); color: var(--red); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

/* ---------- Footer / toast ---------- */
.footer {
  text-align: center; color: var(--text-faint); font-size: 12px;
  padding: 24px 16px 40px;
}
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 10px 18px;
  border-radius: 8px; box-shadow: 0 6px 20px rgba(16,24,40,.2);
  font-size: 13.5px; z-index: 50; max-width: 90vw;
}

@media (max-width: 760px) {
  .import-grid { grid-template-columns: 1fr; }
  .topbar-inner { flex-direction: column; align-items: flex-start; }
}