:root {
  --bg: #eef2f8;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e3e8f0;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --brand-soft: #eff4ff;
  --ok: #15803d;
  --ok-soft: #ecfdf3;
  --warn: #b45309;
  --warn-soft: #fff8eb;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .07);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, #dbe7ff 0%, transparent 60%), var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -.01em; }

/* ---------- 布局 ---------- */
.center-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 30px 28px;
}

.card.wide { max-width: 1000px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

.brand-mark {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff;
  font-size: 19px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .28);
}

.brand-text strong { display: block; font-size: 15px; }
.brand-text span { color: var(--muted); font-size: 12.5px; }

.card h1 { font-size: 20px; margin-bottom: 6px; }
.card .sub { color: var(--muted); font-size: 13px; margin: 0 0 22px; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
}
.field .hint { font-weight: 400; color: var(--muted); font-size: 12px; }

input[type=text], input[type=password], input[type=number],
input[type=datetime-local], select, textarea {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 9px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

input[type=text], input[type=password], input[type=number],
input[type=datetime-local], select { height: 40px; }

input:focus, select:focus, textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

textarea { resize: vertical; min-height: 68px; }

.code-input {
  text-align: center;
  font-size: 24px;
  letter-spacing: 8px;
  font-weight: 600;
  padding: 14px 12px;
  text-indent: 8px;
  height: auto;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  font: inherit;
  font-weight: 600;
  font-size: 13.5px;
  border-radius: 9px;
  border: 1px solid transparent;
  cursor: pointer;
  background: #f1f5f9;
  color: #334155;
  transition: background .15s, border-color .15s, transform .06s;
  white-space: nowrap;
}
.btn:hover { background: #e6ecf5; text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: #475569;
}
.btn-ghost:hover { background: #f8fafc; }

.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-danger:hover { background: #fde2e2; }

.btn-block { width: 100%; padding: 11px; font-size: 15px; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; border-radius: 7px; }

/* ---------- 提示 ---------- */
.alert {
  padding: 10px 13px;
  border-radius: 9px;
  font-size: 13px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: #fbd5d5; }
.alert-ok { background: var(--ok-soft); color: var(--ok); border-color: #cdeedd; }
.alert-info { background: var(--brand-soft); color: #1e40af; border-color: #dbe4ff; }

/* ---------- toast ---------- */
.toasts {
  position: fixed;
  top: 18px; left: 50%;
  transform: translateX(-50%);
  z-index: 99;
  display: flex; flex-direction: column; gap: 8px;
  width: min(520px, calc(100% - 32px));
}
.toast {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(15, 23, 42, .12);
  font-size: 13.5px;
  animation: slidein .22s ease-out;
}
.toast.ok { border-left: 4px solid var(--ok); }
.toast.error { border-left: 4px solid var(--danger); }
.toast button {
  border: 0; background: transparent; cursor: pointer;
  font-size: 20px; line-height: 1; color: #94a3b8; padding: 0 2px;
}
@keyframes slidein { from { opacity: 0; transform: translateY(-8px); } }

/* ---------- 后台 ---------- */
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  height: 58px;
  display: flex; align-items: center; gap: 18px;
}
.topbar .brand { margin: 0; }
.topbar nav { display: flex; gap: 4px; margin-left: 8px; }
.topbar nav a {
  padding: 6px 11px;
  border-radius: 7px;
  color: #475569;
  font-weight: 500;
  font-size: 13.5px;
}
.topbar nav a:hover { background: #f1f5f9; text-decoration: none; }
.topbar nav a.on { background: var(--brand-soft); color: var(--brand); }
.topbar .spacer { flex: 1; }

.page { max-width: 1180px; margin: 0 auto; padding: 24px; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 17px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .03);
}
.stat .k { color: var(--muted); font-size: 12.5px; }
.stat .v { font-size: 24px; font-weight: 700; letter-spacing: -.02em; margin-top: 2px; }

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(15, 23, 42, .03);
  overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.panel-head h2 { font-size: 15px; }
.panel-body { padding: 18px; }

.toolbar { display: flex; gap: 8px; align-items: center; margin-left: auto; }
.search { position: relative; }
.search input { width: 220px; padding: 7px 11px; font-size: 13px; }

table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
  font-size: 13.5px;
}
th {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: #fafbfd;
  white-space: nowrap;
}
tbody tr:hover { background: #fafcff; }
tbody tr:last-child td { border-bottom: 0; }

.slug {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  background: #f1f5f9;
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 12.5px;
  color: #0f172a;
}
.pwd-cell {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  letter-spacing: .5px;
  cursor: pointer;
  border-bottom: 1px dashed #cbd5e1;
  padding-bottom: 1px;
}
.pwd-cell:hover { color: var(--brand); border-bottom-color: var(--brand); }
.pwd-cell.hidden-pwd { color: #94a3b8; letter-spacing: 2px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.truncate {
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block;
  vertical-align: bottom;
}

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.tag-ok { background: var(--ok-soft); color: var(--ok); }
.tag-off { background: #f1f5f9; color: #64748b; }
.tag-warn { background: var(--warn-soft); color: var(--warn); }
.tag-danger { background: var(--danger-soft); color: var(--danger); }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.empty {
  padding: 56px 20px;
  text-align: center;
  color: var(--muted);
}
.empty .big { font-size: 34px; margin-bottom: 8px; opacity: .5; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
}
.form-grid .full { grid-column: 1 / -1; }

.copy-btn { cursor: pointer; }

.footer-note {
  text-align: center;
  color: #94a3b8;
  font-size: 12px;
  margin-top: 18px;
}

.spin {
  width: 40px; height: 40px;
  margin: 4px auto 0;
  border: 3px solid #e3e8f0;
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.code-input[type=password] { letter-spacing: 5px; }
.code-input::placeholder { font-size: 15px; letter-spacing: 0; font-weight: 400; color: #b6c2d4; }

/* ---------- 行内下拉菜单 ---------- */
.menu { position: relative; }
.menu-pop {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 142px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, .16);
  padding: 5px;
  z-index: 30;
  text-align: left;
}
.menu.open .menu-pop { display: block; }
.menu-pop form { margin: 0; }
.menu-pop a, .menu-pop button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 7px 10px;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 13px;
  color: #334155;
  border-radius: 6px;
  cursor: pointer;
}
.menu-pop a:hover, .menu-pop button:hover { background: #f1f5f9; text-decoration: none; }
.menu-pop button.danger { color: var(--danger); }
.menu-pop button.danger:hover { background: var(--danger-soft); }

@media (max-width: 760px) {
  .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: 1fr; }
  .topbar-inner { padding: 0 14px; gap: 8px; }
  .topbar nav { display: none; }
  .page { padding: 16px 12px; }
  .card { padding: 24px 20px; }
  .truncate { max-width: 140px; }
  .search input { width: 130px; }
  table { font-size: 13px; }
  th, td { padding: 9px 10px; }
}