:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b98a5;
  --accent: #3b82f6;
  --danger: #ef4444;
  --ok: #22c55e;
  --warn: #eab308;
  --border: #2a3544;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: #121922;
}
.brand a { color: var(--text); font-weight: 600; }
nav { display: flex; align-items: center; gap: 1rem; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  flex: 1;
}

.site-footer {
  margin-top: auto;
  padding: 1.25rem 1rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: #121922;
}
.site-footer p {
  margin: 0;
}
.site-footer a {
  color: var(--muted);
}
.site-footer a:hover {
  color: var(--accent);
}

h1 { font-size: 1.5rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.1rem; margin: 0 0 1rem; color: var(--muted); font-weight: 600; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.card.narrow { max-width: 420px; margin: 3rem auto; }

/* 登录卡片：约 460px，小屏用 min(90vw) 留边距 */
.login-shell {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: min(65vh, 560px);
  padding: 1.5rem 1rem 2rem;
  box-sizing: border-box;
}
.login-card {
  width: min(90vw, 460px);
  max-width: 460px;
  margin: 0;
  padding: 1.5rem 1.5rem 1.6rem;
  box-sizing: border-box;
}
.login-card input {
  width: 100%;
  box-sizing: border-box;
  font-size: 1rem;
  padding: 0.6rem 0.75rem;
}
.login-card .primary {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 1rem;
  font-size: 1rem;
}

.row.head { margin-bottom: 1rem; }

.stack label, .grid-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.stack { display: flex; flex-direction: column; gap: 1rem; }
.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 1rem;
  align-items: end;
}
@media (max-width: 720px) {
  .grid-form { grid-template-columns: 1fr; }
}

input, select, button {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0f1419;
  color: var(--text);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
}
button.danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
  cursor: pointer;
  font-size: 0.85rem;
}
button.link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
}
.inline { display: inline; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.table th, .table td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
.table th { color: var(--muted); font-weight: 600; }
.actions { text-align: right; white-space: nowrap; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.88em; }
.muted { color: var(--muted); font-size: 0.9rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin-top: 0.75rem; }

.tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  background: #2a3544;
  color: var(--muted);
  vertical-align: middle;
}

.flash {
  padding: 0.65rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.flash.ok { background: #14532d33; border: 1px solid #22c55e55; color: #86efac; }
.flash.err { background: #450a0a44; border: 1px solid #ef444455; color: #fca5a5; }
.flash.warn { background: #42200644; border: 1px solid #eab30855; color: #fde047; }

label.check {
  flex-direction: row !important;
  align-items: center;
  gap: 0.5rem;
}
label.check input { width: auto; }