:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-alt: #a371f7;
  --green: #3fb950;
  --red: #f85149;
  --amber: #d29922;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px; width: 360px; display: flex; flex-direction: column; gap: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.logo { font-size: 28px; font-weight: 700; letter-spacing: .5px; }
.login-sub { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.login-card input {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 12px 14px; font-size: 15px; outline: none;
}
.login-card input:focus { border-color: var(--accent); }
.login-card button, .primary {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 12px 16px; font-size: 15px; font-weight: 600; cursor: pointer;
}
.login-card button:hover, .primary:hover { filter: brightness(1.1); }
.login-error { color: var(--red); font-size: 13px; min-height: 18px; }

/* 顶栏 */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  background: var(--bg-soft); position: sticky; top: 0; z-index: 10;
}
.brand { font-size: 18px; font-weight: 700; }
.brand-sub { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 6px; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.ghost {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 14px; cursor: pointer; font-size: 13px;
}
.ghost:hover { color: var(--text); border-color: var(--muted); }

.container { max-width: 1200px; margin: 0 auto; padding: 24px 28px 60px; }

/* 概览 */
.overview { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 8px;
}
.stat-label { color: var(--muted); font-size: 13px; }
.stat-value { font-size: 26px; font-weight: 700; }

/* 面板 */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.panel-head h2 { font-size: 16px; font-weight: 600; }
.panel-actions { display: flex; gap: 10px; }
.primary.alt { background: var(--accent-alt); }

/* 趋势图 */
.trend-chart { display: flex; align-items: flex-end; gap: 4px; height: 120px; }
.trend-bar { flex: 1; background: var(--accent); border-radius: 3px 3px 0 0; min-height: 2px; opacity: .8; position: relative; }
.trend-bar:hover { opacity: 1; }
.trend-empty { color: var(--muted); align-self: center; margin: auto; }

/* 供应商卡片 */
.providers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.p-card {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 12px;
}
.p-card-top { display: flex; align-items: center; justify-content: space-between; }
.p-name { font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--green); }
.dot.off { background: var(--muted); }
.p-models { color: var(--muted); font-size: 12px; word-break: break-all; }
.p-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.p-metric { background: var(--bg); border-radius: 8px; padding: 8px 10px; }
.p-metric .k { color: var(--muted); font-size: 11px; }
.p-metric .v { font-size: 15px; font-weight: 600; }
.p-actions { display: flex; gap: 8px; }
.p-actions button {
  flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 8px; cursor: pointer; font-size: 13px;
}
.p-actions button:hover { border-color: var(--accent); color: var(--accent); }
.p-actions button.danger:hover { border-color: var(--red); color: var(--red); }

/* 压测结果 */
.test-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 16px; }
.t-card { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.t-card .t-head { display: flex; align-items: center; justify-content: space-between; }
.t-card .t-name { font-weight: 600; }
.t-badge { font-size: 11px; padding: 2px 8px; border-radius: 20px; }
.t-badge.ok { background: rgba(63,185,80,.15); color: var(--green); }
.t-badge.fail { background: rgba(248,81,73,.15); color: var(--red); }
.t-svg { background: #fff; border-radius: 8px; padding: 8px; max-height: 260px; overflow: auto; }
.t-svg svg { width: 100%; height: auto; display: block; }
.t-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; color: var(--muted); }
.t-meta span { background: var(--bg); padding: 3px 8px; border-radius: 6px; }
.t-error { color: var(--red); font-size: 13px; word-break: break-all; }

/* 弹窗 */
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; width: 440px; padding: 24px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-head h3 { font-size: 18px; }
#provider-form { display: flex; flex-direction: column; gap: 14px; }
#provider-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
#provider-form input {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 10px 12px; font-size: 14px; outline: none;
}
#provider-form input:focus { border-color: var(--accent); }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }

@media (max-width: 700px) {
  .overview { grid-template-columns: repeat(2, 1fr); }
  .container { padding: 16px; }
}