/* =====================================================================
   ene-cloud diagnostics — shadcn/ui 風のデザイントークンと最小コンポーネント
   （React は使わず、素の HTML/CSS で同じ見た目になるよう構成）
   ===================================================================== */
:root {
  --background: #ffffff;
  --foreground: #0a0a0a;
  --card: #ffffff;
  --card-foreground: #0a0a0a;
  --primary: #18181b;
  --primary-foreground: #fafafa;
  --secondary: #f4f4f5;
  --secondary-foreground: #18181b;
  --muted: #f4f4f5;
  --muted-foreground: #71717a;
  --accent: #f4f4f5;
  --destructive: #dc2626;
  --destructive-foreground: #fafafa;
  --success: #16a34a;
  --warning: #ca8a04;
  --border: #e4e4e7;
  --input: #e4e4e7;
  --ring: #18181b;
  --radius: 0.5rem;

  --chart-1: #2563eb;
  --chart-2: #16a34a;
  --chart-3: #d97706;
  --chart-4: #7c3aed;
  --chart-5: #dc2626;
  --chart-6: #0891b2;
  --grid: #e4e4e7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #09090b;
    --foreground: #fafafa;
    --card: #0c0c0f;
    --card-foreground: #fafafa;
    --primary: #fafafa;
    --primary-foreground: #18181b;
    --secondary: #27272a;
    --secondary-foreground: #fafafa;
    --muted: #27272a;
    --muted-foreground: #a1a1aa;
    --accent: #27272a;
    --destructive: #ef4444;
    --destructive-foreground: #fafafa;
    --success: #4ade80;
    --warning: #fbbf24;
    --border: #27272a;
    --input: #27272a;
    --ring: #d4d4d8;

    --chart-1: #60a5fa;
    --chart-2: #4ade80;
    --chart-3: #fbbf24;
    --chart-4: #c084fc;
    --chart-5: #f87171;
    --chart-6: #22d3ee;
    --grid: #27272a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI",
               "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }

/* ---------------------------------------------------------- レイアウト */
.app-header {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--background) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.app-header-inner {
  max-width: 1400px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 20px; height: 56px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; letter-spacing: -0.01em; }
.brand .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--chart-2); }
.nav { display: flex; align-items: center; gap: 2px; overflow-x: auto; }
.nav a {
  padding: 6px 12px; border-radius: calc(var(--radius) - 2px);
  color: var(--muted-foreground); text-decoration: none; font-weight: 500; white-space: nowrap;
}
.nav a:hover { background: var(--accent); color: var(--foreground); }
.nav a[aria-current="page"] { background: var(--secondary); color: var(--foreground); }
.spacer { flex: 1; }
.user-chip { color: var(--muted-foreground); font-size: 13px; white-space: nowrap; }

main { max-width: 1400px; margin: 0 auto; padding: 24px 20px 64px; }
.page-title { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 4px; }
.page-desc { color: var(--muted-foreground); margin: 0 0 20px; }
.stack { display: flex; flex-direction: column; gap: 16px; }

/* -------------------------------------------------------------- カード */
.card {
  background: var(--card); color: var(--card-foreground);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.card-header { padding: 20px 20px 0; display: flex; align-items: flex-start; gap: 12px; }
.card-header .grow { flex: 1; min-width: 0; }
.card-title { font-size: 15px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
.card-description { color: var(--muted-foreground); font-size: 13px; margin: 4px 0 0; }
.card-content { padding: 20px; }
.card-content.tight { padding: 12px 20px 20px; }

/* ------------------------------------------------------------ フォーム */
.field-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.label { font-size: 13px; font-weight: 500; }
.hint { font-size: 12px; color: var(--muted-foreground); }
.input, .select {
  height: 36px; width: 100%; padding: 0 10px;
  background: var(--background); color: var(--foreground);
  border: 1px solid var(--input); border-radius: calc(var(--radius) - 2px);
  font: inherit;
}
.select { appearance: none; padding-right: 28px;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted-foreground) 50%),
                    linear-gradient(135deg, var(--muted-foreground) 50%, transparent 50%);
  background-position: right 14px center, right 9px center;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.input:focus, .select:focus { outline: 2px solid var(--ring); outline-offset: -1px; }
.input::placeholder { color: var(--muted-foreground); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 36px; padding: 0 14px; border-radius: calc(var(--radius) - 2px);
  font: inherit; font-weight: 500; cursor: pointer; white-space: nowrap;
  border: 1px solid transparent; background: var(--primary); color: var(--primary-foreground);
}
.btn:hover { opacity: .9; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-outline { background: var(--background); color: var(--foreground); border-color: var(--input); }
.btn-outline:hover { background: var(--accent); opacity: 1; }
.btn-ghost { background: transparent; color: var(--foreground); }
.btn-ghost:hover { background: var(--accent); opacity: 1; }
.btn-destructive { background: var(--destructive); color: var(--destructive-foreground); }
.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; }
.btn-xs { height: 26px; padding: 0 8px; font-size: 12px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; }

/* ------------------------------------------------------------ アラート */
.alert {
  display: none; gap: 10px; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--card); font-size: 13px;
}
.alert.show { display: flex; }
.alert-error { border-color: color-mix(in srgb, var(--destructive) 45%, var(--border)); color: var(--destructive); }
.alert-info { border-color: color-mix(in srgb, var(--chart-1) 45%, var(--border)); }

/* ------------------------------------------------------------ バッジ */
.badge {
  display: inline-flex; align-items: center; padding: 1px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600; border: 1px solid transparent; white-space: nowrap;
}
.badge-default { background: var(--primary); color: var(--primary-foreground); }
.badge-secondary { background: var(--secondary); color: var(--secondary-foreground); }
.badge-outline { border-color: var(--border); color: var(--muted-foreground); }
.badge-destructive { background: color-mix(in srgb, var(--destructive) 15%, transparent);
  color: var(--destructive); border-color: color-mix(in srgb, var(--destructive) 40%, transparent); }
.badge-success { background: color-mix(in srgb, var(--success) 15%, transparent);
  color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, transparent); }
.badge-warning { background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning); border-color: color-mix(in srgb, var(--warning) 40%, transparent); }

/* --------------------------------------------------------------- 指標 */
.stat-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.stat { border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.stat-label { font-size: 12px; color: var(--muted-foreground); }
.stat-value {
  font-size: 20px; font-weight: 600; margin-top: 2px;
  font-variant-numeric: tabular-nums; letter-spacing: -0.02em;
}
.stat-value.ok { color: var(--success); }
.stat-value.warn { color: var(--warning); }
.stat-value.bad { color: var(--destructive); }

/* ------------------------------------------------------------ テーブル */
.table-wrap { overflow: auto; max-height: 520px; border: 1px solid var(--border); border-radius: var(--radius); }
table.table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; min-width: 680px; }
table.table th, table.table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); }
table.table thead th {
  position: sticky; top: 0; background: var(--muted); color: var(--muted-foreground);
  font-weight: 500; font-size: 12px; white-space: nowrap; z-index: 1;
}
table.table tbody tr:last-child td { border-bottom: none; }
table.table tbody tr:hover td { background: color-mix(in srgb, var(--accent) 60%, transparent); }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.ts { white-space: nowrap; font-variant-numeric: tabular-nums; }
td.actions { white-space: nowrap; }
.empty { padding: 28px; text-align: center; color: var(--muted-foreground); }

/* -------------------------------------------------------------- チャート */
.chart-box { position: relative; height: 420px; }
.chart-box.sm { height: 260px; }

/* ---------------------------------------------------------------- その他 */
pre.code {
  margin: 0; padding: 12px; overflow: auto; max-height: 300px;
  background: var(--muted); border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px;
}
.center-screen { min-height: 100dvh; display: grid; place-items: center; padding: 24px; }
.w-sm { width: 100%; max-width: 380px; }
.qr { background: #fff; padding: 8px; border-radius: calc(var(--radius) - 2px); width: 190px; }
.sep { height: 1px; background: var(--border); margin: 16px 0; }
[hidden] { display: none !important; }

.mt { margin-top: 12px; }