/* ---------- 主题变量 ---------- */
:root {
  --bg: #0b1020;
  --bg-2: #131a33;
  --fg: #e8ecff;
  --muted: #93a0c8;
  --card: rgba(22, 29, 56, 0.72);
  --line: rgba(255, 255, 255, 0.1);
  --accent: #6ea8fe;
  --accent-2: #b98cff;
  --ok: #4ade80;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

[data-theme="light"] {
  --bg: #eef2fb;
  --bg-2: #dfe7fa;
  --fg: #16203c;
  --muted: #5b6a92;
  --card: rgba(255, 255, 255, 0.78);
  --line: rgba(20, 30, 70, 0.12);
  --accent: #2f6fed;
  --accent-2: #8b5cf6;
  --ok: #16a34a;
  --shadow: 0 24px 70px rgba(40, 60, 120, 0.18);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: "Segoe UI", -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--fg);
  background: radial-gradient(1200px 700px at 15% -10%, var(--bg-2), transparent 60%),
              radial-gradient(900px 600px at 100% 110%, var(--bg-2), transparent 55%),
              var(--bg);
  transition: background 0.4s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* ---------- 背景粒子网 ---------- */
#net {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
  padding: 34px 34px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: var(--shadow);
  animation: rise 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}

.badge {
  display: inline-block;
  padding: 4px 11px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  color: var(--ok);
  border: 1px solid color-mix(in srgb, var(--ok) 40%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--ok) 12%, transparent);
}

.badge.warn { color: #f59e0b; border-color: rgba(245, 158, 11, 0.4); background: rgba(245, 158, 11, 0.12); }

h1 {
  margin: 16px 0 10px;
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sub {
  margin: 0 0 24px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.sub strong { color: var(--fg); font-weight: 600; }

/* ---------- 数据格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
}

.k { font-size: 11.5px; letter-spacing: 0.04em; color: var(--muted); }

.v {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ---------- 按钮 ---------- */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

button {
  padding: 10px 17px;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 11px;
  cursor: pointer;
  transition: transform 0.14s ease, filter 0.14s ease, opacity 0.14s ease;
}

button:hover { filter: brightness(1.09); }
button:active { transform: scale(0.97); }

button.ghost {
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line);
}

button.ghost:hover { filter: none; background: color-mix(in srgb, var(--fg) 8%, transparent); }

/* ---------- 自检日志 ---------- */
.log {
  min-height: 0;
  margin: 18px 0 0;
  padding: 0;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.log:not(:empty) {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: color-mix(in srgb, var(--bg) 45%, transparent);
}

footer {
  margin-top: 20px;
  padding-top: 14px;
  font-size: 11.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .card { animation: none; }
}