:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --fg: #16181d;
  --muted: #6b7280;
  --line: #e3e5ea;
  --accent: #2f6fed;
  --ok: #12a150;
  --warn: #d97706;
  --danger: #dc2626;
  --ring-bg: #e6e8ee;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #171a20;
    --fg: #e8eaee;
    --muted: #939aa6;
    --line: #262a33;
    --accent: #5b8cf7;
    --ok: #2ecc71;
    --warn: #f0a53a;
    --danger: #ef4444;
    --ring-bg: #262a33;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---------- 登录 ---------- */

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

.login-card {
  width: 100%;
  max-width: 340px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-card h1 { font-size: 17px; margin: 0; }
.login-card p { margin: 0; font-size: 13px; }

/* ---------- 布局 ---------- */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 16px; margin: 0; font-weight: 600; }
.head-right { display: flex; align-items: center; gap: 12px; }

.dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }

.badge {
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.badge.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.badge.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.card.wide { grid-column: 1 / -1; }
.card h2 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
}

footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 4px 20px 32px;
}

/* ---------- 用量环 ---------- */

.usage { display: flex; align-items: center; gap: 20px; margin-bottom: 16px; }

.ring { width: 108px; height: 108px; flex: none; }
.ring-bg, .ring-fg { fill: none; stroke-width: 10; }
.ring-bg { stroke: var(--ring-bg); }
.ring-fg {
  stroke: var(--accent);
  stroke-linecap: round;
  transition: stroke-dashoffset .4s ease, stroke .3s ease;
}
.ring-fg.warn { stroke: var(--warn); }
.ring-fg.over { stroke: var(--danger); }

.usage-text strong { font-size: 26px; font-weight: 650; }
.usage-text .pct { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* ---------- 键值列表 ---------- */

.kv {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 16px;
}
.kv > div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line);
}
.kv dt { color: var(--muted); font-size: 12.5px; }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; font-size: 13px; }

.hint {
  margin: 14px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  padding: 9px 11px;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}

/* ---------- 控件 ---------- */

input, select, button { font: inherit; color: inherit; }

input[type=number], input[type=password], select {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button {
  cursor: pointer;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  transition: background .15s, border-color .15s;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { filter: brightness(1.07); }
button.ghost { background: transparent; }
button.danger:hover { border-color: var(--danger); color: var(--danger); }

.seg { display: flex; gap: 0; margin-bottom: 8px; }
.seg button {
  flex: 1;
  border-radius: 0;
  border-right-width: 0;
}
.seg button:first-child { border-radius: 8px 0 0 8px; }
.seg button:last-child { border-radius: 0 8px 8px 0; border-right-width: 1px; }
.seg button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.row { display: flex; align-items: center; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}
.grid label, .check { display: block; font-size: 12.5px; color: var(--muted); }
.grid label > * { margin-top: 5px; }

.unit { display: flex; align-items: center; gap: 6px; }
.unit span { color: var(--muted); font-size: 12px; white-space: nowrap; }
.unit select { width: auto; }

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--fg);
  font-size: 13px;
}
.check input { width: 15px; height: 15px; }

.ok { color: var(--ok); font-size: 12.5px; }
.err { color: var(--danger); font-size: 12.5px; }

/* ---------- 柱状图 ---------- */

.chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 130px;
  padding-top: 18px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.chart .quota-line {
  position: absolute;
  left: 0; right: 0;
  border-top: 1px dashed var(--warn);
}
.chart .bar {
  flex: 1;
  min-width: 4px;
  min-height: 2px;
  background: color-mix(in srgb, var(--accent) 65%, transparent);
  border-radius: 3px 3px 0 0;
  position: relative;
}
.chart .bar.over { background: var(--danger); }
.chart .bar.today { background: var(--accent); }

/* ---------- 日志 ---------- */

.log { list-style: none; margin: 0; padding: 0; max-height: 260px; overflow-y: auto; }
.log li {
  display: flex;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 12.5px;
}
.log time { color: var(--muted); flex: none; font-variant-numeric: tabular-nums; }
.log li.warn span { color: var(--warn); }