:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --border: #e5e7ef;
  --text: #1c2033;
  --muted: #7b829a;
  --primary: #2f5bff;
  --primary-weak: #eef2ff;
  --success: #12a150;
  --success-weak: #e6f6ed;
  --warn: #c8811a;
  --warn-weak: #fdf3e2;
  --danger: #d64545;
  --danger-weak: #fdecec;
  --info: #2b6cb0;
  --info-weak: #e8f1fb;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(23, 30, 60, .05), 0 8px 24px rgba(23, 30, 60, .06);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.55 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
h1, h2, h3 { margin: 0; font-weight: 650; }
button { font: inherit; cursor: pointer; }
input, select, textarea {
  font: inherit; color: var(--text); background: #fff;
  border: 1px solid var(--border); border-radius: 9px; padding: 8px 11px; width: 100%;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47, 91, 255, .12); }
textarea { resize: vertical; }
.hidden { display: none !important; }
.muted { color: var(--muted); }

/* ---------- login ---------- */
.login-wrap { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: 380px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px; box-shadow: var(--shadow);
}
.login-brand { display: flex; gap: 12px; align-items: center; margin-bottom: 22px; }
.login-brand h1 { font-size: 17px; }
.login-brand p { margin: 2px 0 0; color: var(--muted); font-size: 12.5px; }
.logo {
  width: 40px; height: 40px; border-radius: 11px; background: var(--primary); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 13px; letter-spacing: .5px;
}
.login-card label { display: block; margin-bottom: 14px; color: var(--muted); font-size: 12.5px; }
.login-card input { margin-top: 6px; }
.hint { color: var(--muted); font-size: 12px; margin: 12px 0 0; text-align: center; }
.error { color: var(--danger); font-size: 12.5px; margin: -4px 0 10px; min-height: 18px; }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--panel); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 18px 14px; gap: 8px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 6px 14px; }
.brand-text { display: flex; flex-direction: column; }
.brand-text span { color: var(--muted); font-size: 11.5px; }
#nav { display: flex; flex-direction: column; gap: 4px; }
#nav button {
  text-align: left; border: 0; background: transparent; color: #454b63;
  padding: 9px 12px; border-radius: 9px;
}
#nav button:hover { background: #f4f6fb; }
#nav button.active { background: var(--primary-weak); color: var(--primary); font-weight: 600; }
.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 2px; }
.link { border: 0; background: transparent; color: var(--primary); padding: 6px 12px; text-align: left; border-radius: 8px; }
.link:hover { background: #f4f6fb; }
.link.danger { color: var(--danger); }

.content { padding: 22px 26px 40px; overflow-x: hidden; }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.page-head h2 { font-size: 19px; }
.page-head .btn { margin-left: auto; }
.inline-select { width: auto; margin-left: auto; }

/* ---------- cards ---------- */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.card h3 { font-size: 14.5px; margin-bottom: 14px; }
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.card-head h3 { margin: 0; }
.stat {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow);
}
.stat .num { font-size: 24px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 12.5px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
label { display: block; color: var(--muted); font-size: 12.5px; }
label > input, label > select, label > textarea { margin-top: 5px; color: var(--text); }
label i { display: block; color: #9aa1b8; font-size: 11.5px; font-style: normal; margin-top: 3px; }
.block-label { margin-top: 14px; }
.actions { margin-top: 14px; display: flex; align-items: center; gap: 10px; }
.test-result { font-size: 12.5px; color: var(--muted); }

.btn {
  border: 1px solid var(--border); background: #fff; color: var(--text);
  border-radius: 9px; padding: 8px 15px;
}
.btn:hover { border-color: #c9cfe2; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost { background: #fff; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- docs ---------- */
.dropzone {
  border: 1.5px dashed #c9d0e6; border-radius: var(--radius); padding: 28px;
  text-align: center; background: #fbfcff; transition: border-color .15s, background .15s;
}
.dropzone.over { border-color: var(--primary); background: var(--primary-weak); }
.dz-icon { font-size: 26px; color: var(--primary); }
.dropzone p { margin: 6px 0 0; }
.file-list { list-style: none; margin: 12px 0 0; padding: 0; }
.file-list li { display: flex; gap: 8px; align-items: center; font-size: 13px; padding: 4px 0; }
.filters { margin-left: auto; display: flex; gap: 6px; }
.filters button {
  border: 1px solid var(--border); background: #fff; border-radius: 999px;
  padding: 4px 12px; font-size: 12.5px; color: #4d5468;
}
.filters button.active { background: var(--primary-weak); border-color: #c9d3ff; color: var(--primary); }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 11px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }
.table th { color: var(--muted); font-weight: 500; font-size: 12.5px; }
.table td.nowrap { white-space: nowrap; }
.fname { font-weight: 550; }
.sub { color: var(--muted); font-size: 11.5px; }
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 550;
}
.badge.pending { background: var(--info-weak); color: var(--info); }
.badge.processing { background: var(--warn-weak); color: var(--warn); }
.badge.processed { background: var(--success-weak); color: var(--success); }
.badge.failed { background: var(--danger-weak); color: var(--danger); }
.bar { height: 5px; background: #eef0f6; border-radius: 999px; margin-top: 6px; overflow: hidden; width: 130px; }
.bar > i { display: block; height: 100%; background: var(--primary); border-radius: 999px; transition: width .3s; }
.row-actions { display: flex; gap: 6px; }
.row-actions button { border: 1px solid var(--border); background: #fff; border-radius: 7px; padding: 4px 10px; font-size: 12.5px; }
.row-actions button.danger { color: var(--danger); border-color: #f2c9c9; }
.empty { padding: 30px; text-align: center; color: var(--muted); }

/* ---------- chat ---------- */
.chat-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; min-height: 340px; max-height: 58vh; overflow-y: auto; margin-bottom: 14px;
}
.msg { margin-bottom: 18px; }
.msg .who { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.msg.user .body { background: var(--primary-weak); }
.msg .body { white-space: pre-wrap; word-break: break-word; background: #f7f8fc; border-radius: 10px; padding: 10px 13px; }
.msg.assistant .body { background: #f7f8fc; }
.cursor { display: inline-block; width: 7px; background: var(--primary); animation: blink 1s steps(2, start) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.refs { margin-top: 8px; font-size: 12.5px; color: var(--muted); }
.refs summary { cursor: pointer; }
.ref-item { background: #fbfcff; border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; margin-top: 6px; }
.chat-input { display: flex; gap: 10px; align-items: flex-end; }
.chat-input textarea { flex: 1; }

/* ---------- modal & toast ---------- */
.modal { position: fixed; inset: 0; background: rgba(20, 24, 40, .38); display: grid; place-items: center; padding: 20px; z-index: 50; }
.modal-card { background: #fff; border-radius: 14px; width: 460px; max-width: 100%; box-shadow: var(--shadow); }
.modal-head { display: flex; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-size: 15px; }
.modal-head .link { margin-left: auto; font-size: 16px; }
.modal-body { padding: 18px; }
.modal-body label { margin-bottom: 12px; }
.modal-body input { margin-top: 5px; }
.modal-foot { padding: 14px 18px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.modal-foot:empty { display: none; }
.kv { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 22px; }
.kv div { display: flex; justify-content: space-between; gap: 10px; border-bottom: 1px dashed var(--border); padding: 6px 0; font-size: 13px; }
.kv span:first-child { color: var(--muted); }
.kv span:last-child { font-weight: 550; word-break: break-all; }
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%);
  background: #1c2033; color: #fff; padding: 10px 18px; border-radius: 10px; z-index: 80; font-size: 13px;
}

/* ---------- qrcode ---------- */
.grid-qr { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px; }
.grid-qr > .card { margin-bottom: 0; }   /* 两栏卡片严格等高 */
.actions.wrap { flex-wrap: wrap; }
.qr-preview {
  display: grid; place-items: center; min-height: 232px; padding: 20px; margin-bottom: 18px;
  border: 1.5px dashed #c9d0e6; border-radius: var(--radius); background: #fbfcff;
}
.qr-preview img {
  max-width: 100%; max-height: 280px; border-radius: 10px; background: #fff;
  box-shadow: var(--shadow);
}
.qr-empty { color: var(--muted); font-size: 13px; }
.check-line { display: flex; align-items: center; gap: 8px; margin-top: 16px; color: var(--text); font-size: 13px; cursor: pointer; }
.check-line input { width: auto; margin: 0; accent-color: var(--primary); }
#tab-qrcode .hint { text-align: left; }
code {
  background: var(--primary-weak); color: #2b3d87; padding: 1px 6px;
  border-radius: 5px; font-size: 12px; font-family: ui-monospace, Consolas, monospace;
}
.hint strong { color: var(--text); }

@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-qr { grid-template-columns: 1fr; }
}