/* ───────────────────────────────────────────────────────────────
   光脉奔流 · Phonton4Ai — 控制台共享设计系统 (App Shell)
   深空暗色 + 电光青 · 沿用 brand-spec.md 的 token 与姿态
   ─────────────────────────────────────────────────────────────── */
:root {
  --bg:        oklch(16% 0.02 255);
  --bg-deep:   oklch(12% 0.018 255);
  --surface:   oklch(20% 0.024 255);
  --surface-2: oklch(24% 0.026 255);
  --surface-3: oklch(27% 0.028 255);
  --fg:        oklch(96% 0.006 240);
  --muted:     oklch(67% 0.02 245);
  --faint:     oklch(52% 0.02 250);
  --border:    oklch(30% 0.02 255);
  --border-bright: oklch(40% 0.03 250);
  --accent:    oklch(80% 0.14 195);   /* 电光青 photon cyan */
  --accent-2:  oklch(66% 0.20 295);   /* 流光靛紫 — 极少量 */

  --ok:    oklch(78% 0.15 160);
  --warn:  oklch(82% 0.13 85);
  --danger:oklch(68% 0.18 25);
  --info:  oklch(74% 0.13 250);

  --accent-soft: color-mix(in oklch, var(--accent) 16%, transparent);
  --accent-line: color-mix(in oklch, var(--accent) 40%, transparent);
  --ok-soft:   color-mix(in oklch, var(--ok) 18%, transparent);
  --warn-soft: color-mix(in oklch, var(--warn) 18%, transparent);
  --danger-soft: color-mix(in oklch, var(--danger) 18%, transparent);
  --fg-soft:   color-mix(in oklch, var(--fg) 6%, transparent);

  --font-display: 'Space Grotesk', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --radius: 12px;
  --radius-lg: 16px;
  --radius-sm: 9px;
  --sidebar-w: 248px;
  --topbar-h: 60px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-size: 15px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
p { text-wrap: pretty; margin: 0; }
h1,h2,h3,h4 { margin: 0; font-family: var(--font-display); text-wrap: balance; font-weight: 600; letter-spacing: -0.015em; }
::selection { background: var(--accent-soft); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--border-bright); }

.num  { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.muted { color: var(--muted); }
.eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }

/* ── App shell layout ─────────────────────────────────────────── */
.app { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }

/* sidebar */
.sidebar {
  position: sticky; top: 0; height: 100vh; align-self: start;
  display: flex; flex-direction: column; gap: 6px;
  background: var(--bg-deep); border-right: 1px solid var(--border);
  padding: 18px 14px; overflow-y: auto; z-index: 60;
}
.side-brand { display: flex; align-items: center; gap: 10px; padding: 6px 8px 16px; }
.side-brand .mark { width: 30px; height: 30px; flex: none; filter: drop-shadow(0 0 7px var(--accent-line)); }
.side-brand b { font-family: var(--font-display); font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.side-brand small { display: block; font-family: var(--font-mono); font-size: 10px; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 400; margin-top: 1px; }
.nav-group { padding: 12px 8px 4px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.nav-item {
  display: flex; align-items: center; gap: 11px; padding: 9px 11px; border-radius: 10px;
  color: var(--muted); font-size: 14.5px; transition: background .14s, color .14s; position: relative;
}
.nav-item svg { width: 18px; height: 18px; flex: none; opacity: .85; }
.nav-item:hover { background: var(--fg-soft); color: var(--fg); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }
.nav-item.active::before { content: ''; position: absolute; left: -14px; top: 8px; bottom: 8px; width: 3px; border-radius: 0 3px 3px 0; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.nav-item .badge-mini { margin-left: auto; font-family: var(--font-mono); font-size: 10px; padding: 1px 6px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }
.side-spacer { flex: 1; }
.side-balance { margin-top: 10px; padding: 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.side-balance .k { font-size: 12px; color: var(--muted); }
.side-balance .v { font-family: var(--font-mono); font-size: 22px; font-weight: 600; margin: 4px 0 12px; letter-spacing: -0.01em; }

/* main column */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 50; height: var(--topbar-h);
  display: flex; align-items: center; gap: 16px; padding: 0 26px;
  background: color-mix(in oklch, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.topbar .crumb { display: flex; align-items: center; gap: 9px; font-size: 15px; min-width: 0; }
.topbar .crumb b { font-family: var(--font-display); font-weight: 600; }
.topbar .crumb .sep { color: var(--faint); }
.topbar .crumb .muted { color: var(--muted); font-size: 13.5px; }
.topbar-spacer { flex: 1; }
.burger { display: none; width: 38px; height: 38px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); place-items: center; color: var(--fg); }
.burger svg { width: 19px; height: 19px; }

.searchbox { display: flex; align-items: center; gap: 8px; padding: 7px 12px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); color: var(--muted); min-width: 200px; }
.searchbox svg { width: 15px; height: 15px; }
.searchbox input { border: 0; background: transparent; outline: none; width: 100%; font-size: 13.5px; color: var(--fg); }
.searchbox input::placeholder { color: var(--faint); }
.searchbox kbd { font-family: var(--font-mono); font-size: 10px; padding: 2px 6px; border: 1px solid var(--border); border-radius: 5px; color: var(--faint); }

.content { padding: 28px 26px 56px; max-width: 1280px; width: 100%; margin-inline: auto; }
.page-head { margin-bottom: 24px; }
.page-head h1 { font-size: clamp(24px, 3vw, 30px); line-height: 1.15; }
.page-head .lead { color: var(--muted); margin-top: 8px; font-size: 15px; max-width: 70ch; }

/* lang toggle + balance pill + avatar */
.lang-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 99px; overflow: hidden; font-family: var(--font-mono); font-size: 12px; flex: none; }
.lang-toggle button { padding: 6px 11px; background: transparent; color: var(--muted); border: 0; transition: .14s; }
.lang-toggle button.on { background: var(--accent-soft); color: var(--accent); }
.bal-pill { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); font-family: var(--font-mono); font-size: 13px; flex: none; }
.bal-pill .dot { width: 6px; height: 6px; border-radius: 99px; background: var(--ok); box-shadow: 0 0 7px var(--ok); }
.avatar { width: 36px; height: 36px; border-radius: 99px; flex: none; display: grid; place-items: center; font-family: var(--font-display); font-weight: 600; font-size: 14px; color: var(--bg-deep); background: linear-gradient(135deg, var(--accent), var(--accent-2)); }

/* ── buttons ──────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border-radius: var(--radius); border: 1px solid transparent; font-size: 14.5px; font-weight: 500; letter-spacing: -0.005em; white-space: nowrap; transition: transform .05s, background .15s, border-color .15s, box-shadow .2s, color .15s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--bg-deep); border-color: var(--accent); }
.btn-primary:hover { box-shadow: 0 6px 26px -8px var(--accent-line); background: color-mix(in oklch, var(--accent) 92%, white); }
.btn-secondary { background: color-mix(in oklch, var(--surface) 70%, transparent); color: var(--fg); border-color: var(--border-bright); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--accent); background: var(--fg-soft); }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in oklch, var(--danger) 35%, transparent); }
.btn-danger:hover { background: color-mix(in oklch, var(--danger) 28%, transparent); }
.btn-sm { padding: 7px 13px; font-size: 13px; border-radius: 9px; }
.btn-lg { padding: 13px 24px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-arrow::after { content: '→'; transition: transform .15s; }
.btn-arrow:hover::after { transform: translateX(3px); }
.icon-btn { width: 36px; height: 36px; display: inline-grid; place-items: center; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); color: var(--muted); transition: .14s; }
.icon-btn:hover { color: var(--accent); border-color: var(--accent-line); }
.icon-btn svg { width: 17px; height: 17px; }

/* ── pills / tags / status ────────────────────────────────────── */
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-line); border-radius: 99px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; }
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border: 1px solid var(--border); border-radius: 99px; color: var(--muted); font-family: var(--font-mono); font-size: 12px; background: color-mix(in oklch, var(--surface) 50%, transparent); }
.tag.on { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.status { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 12px; }
.status::before { content: ''; width: 7px; height: 7px; border-radius: 50%; }
.status.up { color: var(--ok); } .status.up::before { background: var(--ok); box-shadow: 0 0 7px var(--ok); }
.status.beta { color: var(--warn); } .status.beta::before { background: var(--warn); }
.status.down { color: var(--danger); } .status.down::before { background: var(--danger); }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 3px 9px; border-radius: 7px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .03em; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }
.badge.neutral { background: var(--fg-soft); color: var(--muted); }
.badge.accent { background: var(--accent-soft); color: var(--accent); }

/* ── cards & grids ────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; }
.card.tight { padding: 16px; }
.card-hover { transition: border-color .18s, transform .18s, box-shadow .18s; }
.card-hover:hover { border-color: var(--border-bright); transform: translateY(-2px); box-shadow: 0 16px 40px -24px oklch(8% 0.03 255); }
.card-glow { position: relative; overflow: hidden; }
.card-glow::after { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: linear-gradient(140deg, var(--accent-line), transparent 45%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.row { display: flex; align-items: center; gap: 14px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.wrap { flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin: 32px 0 16px; }
.section-title h2 { font-size: 19px; }
.section-title .muted { font-size: 13px; }
.divider { height: 1px; background: var(--border); border: 0; margin: 0; }

/* stat card */
.stat .k { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.stat .k svg { width: 15px; height: 15px; color: var(--accent); }
.stat .v { font-family: var(--font-mono); font-size: 30px; font-weight: 600; letter-spacing: -0.02em; margin: 10px 0 6px; line-height: 1; }
.stat .v small { font-size: 15px; color: var(--muted); font-weight: 400; }
.stat .delta { font-family: var(--font-mono); font-size: 12px; display: inline-flex; align-items: center; gap: 4px; }
.stat .delta.up { color: var(--ok); }
.stat .delta.down { color: var(--danger); }

/* ── tables ───────────────────────────────────────────────────── */
.table-wrap { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow-x: auto; background: var(--surface); }
.ds-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
.ds-table th, .ds-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--border); }
.ds-table th { color: var(--muted); font-weight: 500; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }
.ds-table tbody tr { transition: background .12s; }
.ds-table tbody tr:last-child td { border-bottom: 0; }
.ds-table tbody tr:hover { background: var(--fg-soft); }
.ds-table .right { text-align: right; }
.ds-table .num-col { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.m-name { font-weight: 600; }
.m-by { color: var(--muted); font-size: 12.5px; font-family: var(--font-mono); }
.model-ico { width: 30px; height: 30px; border-radius: 8px; flex: none; display: grid; place-items: center; font-family: var(--font-mono); font-weight: 600; font-size: 12px; background: var(--surface-2); border: 1px solid var(--border); }

/* ── forms ────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.input, .select, .textarea {
  width: 100%; padding: 11px 13px; background: var(--bg-deep); border: 1px solid var(--border);
  border-radius: 10px; font-size: 14px; color: var(--fg); outline: none; transition: border-color .15s, box-shadow .15s;
}
.input::placeholder, .textarea::placeholder { color: var(--faint); }
.input:focus, .select:focus, .textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.textarea { resize: vertical; min-height: 96px; line-height: 1.6; font-family: var(--font-body); }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238aa' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.seg { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid var(--border); border-radius: 99px; background: color-mix(in oklch, var(--surface) 50%, transparent); flex-wrap: wrap; }
.seg button { padding: 7px 15px; border-radius: 99px; font-size: 13.5px; color: var(--muted); background: transparent; border: 0; transition: .14s; }
.seg button.on { background: var(--accent-soft); color: var(--accent); }
.switch { width: 42px; height: 24px; border-radius: 99px; border: 1px solid var(--border); background: var(--bg-deep); position: relative; transition: .18s; flex: none; }
.switch::after { content: ''; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: var(--muted); transition: .18s; }
.switch.on { background: var(--accent-soft); border-color: var(--accent-line); }
.switch.on::after { left: 20px; background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* code block + copy */
.codeblock { background: var(--bg-deep); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.codeblock-head { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: color-mix(in oklch, var(--surface) 50%, transparent); }
.codeblock-head .ttl { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.codeblock pre { margin: 0; padding: 16px; overflow-x: auto; font-family: var(--font-mono); font-size: 12.8px; line-height: 1.8; }
.code { white-space: pre; color: var(--fg); }
.c-key { color: var(--accent); } .c-str { color: var(--ok); } .c-fn { color: var(--accent-2); } .c-cm { color: var(--faint); } .c-num { color: var(--warn); }
.copy-btn { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border: 1px solid var(--border); border-radius: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); background: transparent; transition: .14s; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent-line); }
.copy-btn.copied { color: var(--ok); border-color: color-mix(in oklch, var(--ok) 40%, transparent); }

/* mini bar chart (CSS) */
.barchart { display: flex; align-items: flex-end; gap: 6px; height: 120px; }
.barchart .bar { flex: 1; border-radius: 5px 5px 0 0; background: linear-gradient(180deg, var(--accent), color-mix(in oklch, var(--accent) 30%, var(--surface))); position: relative; min-height: 3px; transition: opacity .14s; }
.barchart .bar:hover { opacity: .8; }
.barchart .bar.alt { background: linear-gradient(180deg, var(--accent-2), color-mix(in oklch, var(--accent-2) 25%, var(--surface))); }

/* toast */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); opacity: 0; pointer-events: none; padding: 11px 18px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border-bright); font-size: 14px; box-shadow: 0 14px 40px -16px oklch(8% 0.04 255); transition: opacity .2s, transform .2s; z-index: 200; display: flex; align-items: center; gap: 9px; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast svg { width: 17px; height: 17px; color: var(--ok); }

/* mobile drawer scrim */
.scrim { position: fixed; inset: 0; background: color-mix(in oklch, var(--bg-deep) 60%, transparent); backdrop-filter: blur(2px); z-index: 55; opacity: 0; pointer-events: none; transition: opacity .2s; }
.scrim.show { opacity: 1; pointer-events: auto; }

/* ── responsive ───────────────────────────────────────────────── */
@media (max-width: 1080px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 920px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; top: 0; left: 0; width: 280px; height: 100vh;
    transform: translateX(-100%); transition: transform .24s ease; box-shadow: 0 0 60px -10px oklch(8% 0.04 255);
  }
  .sidebar.open { transform: translateX(0); }
  .burger { display: grid; }
  .searchbox { display: none; }
  .content { padding: 20px 18px 48px; }
  .topbar { padding: 0 18px; gap: 12px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
  .bal-pill { display: none; }
  .topbar .crumb .muted { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }