:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #fafbfc;
  --border: #e2e5ea;
  --text: #1c2027;
  --muted: #6b7280;
  --accent: #1f6feb;
  --accent-soft: #e8f0fe;
  --ok: #197b3f;
  --ok-soft: #e6f4ea;
  --warn: #9a6200;
  --warn-soft: #fdf3e2;
  --danger: #b3261e;
  --danger-soft: #fdeceb;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1b1e24;
    --surface-2: #21252c;
    --border: #2c313a;
    --text: #e6e8ec;
    --muted: #98a1b0;
    --accent: #5b9bff;
    --accent-soft: #1d2b44;
    --ok: #6ede9a;
    --ok-soft: #16301f;
    --warn: #e5b567;
    --warn-soft: #33280f;
    --danger: #ff8a80;
    --danger-soft: #3a1a18;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }

/* ---------------------------------------------------------------- login */

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(380px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}

.login-card h1 { font-size: 19px; margin: 0 0 4px; }
.login-card p.sub { color: var(--muted); margin: 0 0 24px; font-size: 13px; }

/* ---------------------------------------------------------------- shell */

.shell { display: grid; grid-template-columns: 216px 1fr; min-height: 100vh; }

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand { padding: 0 10px 18px; }
.brand strong { display: block; font-size: 15px; }
.brand span { color: var(--muted); font-size: 12px; }

.nav-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  text-align: left;
  width: 100%;
}
.nav-item:hover { background: var(--surface-2); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-spacer { flex: 1; }

.main { padding: 24px 28px 64px; max-width: 1180px; }

.page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.page-head h1 { font-size: 20px; margin: 0; }
.page-head .hint { color: var(--muted); font-size: 13px; }

/* ---------------------------------------------------------------- cards */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card h2 { font-size: 15px; margin: 0 0 14px; }
.card h3 { font-size: 13px; margin: 18px 0 8px; color: var(--muted); font-weight: 600; }

.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

.stat { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; }
.stat .k { color: var(--muted); font-size: 12px; }
.stat .v { font-size: 22px; font-weight: 600; margin-top: 2px; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- forms */

label.field { display: block; margin-bottom: 14px; }
label.field > span { display: block; font-size: 13px; margin-bottom: 5px; color: var(--muted); }

input[type=text], input[type=password], input[type=search], input[type=datetime-local],
textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; min-height: 120px; line-height: 1.7; }
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1 1 180px; }
.row.tight > * { flex: 0 0 auto; }

.counter { float: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.counter.over { color: var(--danger); font-weight: 600; }

.checkline { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.checkline input { width: auto; }

button {
  font: inherit;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover:not(:disabled) { filter: brightness(1.08); color: #fff; }
button.danger { color: var(--danger); border-color: var(--danger); }
button.link { border: 0; background: none; color: var(--accent); padding: 4px 6px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }

/* ---------------------------------------------------------------- tables */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: var(--surface-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.tag.ok { background: var(--ok-soft); color: var(--ok); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.danger { background: var(--danger-soft); color: var(--danger); }
.tag.mute { background: var(--surface-2); color: var(--muted); border-color: var(--border); }
.tag.accent { background: var(--accent-soft); color: var(--accent); }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }

/* ---------------------------------------------------------------- misc */

.banner {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  border: 1px solid transparent;
  font-size: 13px;
}
.banner.error { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.banner.ok { background: var(--ok-soft); color: var(--ok); }
.banner.warn { background: var(--warn-soft); color: var(--warn); }
.banner.hidden { display: none; }

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 8px 24px rgba(16, 24, 40, .16);
  max-width: 380px;
  z-index: 50;
}
.toast.error { border-left-color: var(--danger); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(12, 15, 20, .5);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 40;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 22px 24px;
  width: min(620px, 100%);
  max-height: 86vh;
  overflow-y: auto;
}
.modal h2 { margin-top: 0; }

.pager { display: flex; gap: 10px; align-items: center; margin-top: 12px; }
.empty { color: var(--muted); padding: 22px 4px; text-align: center; }
.preview-body { white-space: pre-wrap; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; }

@media (max-width: 820px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; }
  .brand { width: 100%; padding-bottom: 8px; }
  .main { padding: 18px 16px 48px; }
}

/* ---------------------------------------------------------------- 呼号选择器 */

.picker {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--surface-2);
}
.picker.disabled { opacity: .45; pointer-events: none; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 30px;
  align-items: center;
  margin-bottom: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 6px 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid transparent;
  font-size: 13px;
}
.chip.unknown {
  background: var(--surface);
  color: var(--muted);
  border-color: var(--border);
  border-style: dashed;
}
.chip-count {
  background: rgba(127, 127, 127, .22);
  border-radius: 999px;
  padding: 0 6px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.chip-x {
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  padding: 0 4px;
  font-size: 15px;
  line-height: 1;
  border-radius: 999px;
}
.chip-x:hover { background: rgba(127, 127, 127, .22); color: inherit; }

.picker-search { position: relative; }

.suggest {
  position: absolute;
  z-index: 20;
  left: 0;
  right: 0;
  top: calc(100% + 4px);
  max-height: 260px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(16, 24, 40, .18);
}
.suggest.hidden { display: none; }

.suggest-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  border: 0;
  border-radius: 0;
  background: none;
  text-align: left;
  padding: 8px 12px;
}
.suggest-item:hover { background: var(--accent-soft); color: inherit; }
.suggest-empty { padding: 10px 12px; font-size: 13px; }

.picker-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.picker-summary { font-size: 12px; flex: 1 1 100%; }