:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #eef2ff;
  --surface-3: #f8f9ff;
  --text: #101828;
  --muted: #667085;
  --line: #d0d5dd;
  --primary: #2347d7;
  --primary-2: #7a5af8;
  --success: #067647;
  --warning: #b54708;
  --danger: #b42318;
  --shadow: 0 12px 32px rgba(16, 24, 40, 0.08);
  --radius: 22px;
}

:root[data-theme="dark"] {
  --bg: #0b1220;
  --surface: #111827;
  --surface-2: #152031;
  --surface-3: #1b2940;
  --text: #e5e7eb;
  --muted: #98a2b3;
  --line: #243041;
  --primary: #6ea8fe;
  --primary-2: #9b8cff;
  --success: #32d583;
  --warning: #f79009;
  --danger: #f97066;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: Tahoma, Arial, sans-serif;
  background: radial-gradient(circle at top, rgba(122,90,248,.12), transparent 25%), var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(12px); background: color-mix(in srgb, var(--bg) 84%, transparent); border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: white; }
.nav-links { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.nav-links a { padding: 10px 12px; border-radius: 14px; color: var(--muted); }
.nav-links a.active, .nav-links a:hover { background: var(--surface); color: var(--text); }
.header-actions { display: flex; gap: 12px; align-items: center; }
.language-switcher { display: flex; gap: 8px; }
.chip { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; font-size: .9rem; background: transparent; }
.chip-active { background: var(--surface); border-color: var(--primary); }
.page-grid { display: grid; gap: 22px; padding: 24px 0 40px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.card { background: var(--surface); border: 1px solid color-mix(in srgb, var(--line) 75%, transparent); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card-hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 24px; background: linear-gradient(180deg, var(--surface), var(--surface-2)); }
.hero-panel, .metric-grid, .form-grid { display: grid; gap: 14px; align-content: start; }
.metric-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.metric-card, .metric { background: var(--surface-2); border-radius: 20px; padding: 16px; }
.metric-card strong, .metric strong { display: block; font-size: 2rem; margin-top: 8px; }
.eyebrow { display: inline-flex; padding: 8px 12px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 15%, transparent); color: var(--primary); }
.lead { color: var(--muted); line-height: 1.8; }
.btn { border: none; border-radius: 14px; padding: 12px 16px; font: inherit; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: white; }
.btn-outline { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn-muted { background: var(--surface-2); color: var(--text); }
.btn-google { background: #ffffff; color: #111827; border: 1px solid #d0d5dd; }
:root[data-theme="dark"] .btn-google { background: #f8fafc; }
.hero-actions, .form-actions, .search-form, .inline-group { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.form-grid label, .field { display: grid; gap: 8px; }
.field small { color: var(--muted); }
input, select, textarea { width: 100%; padding: 12px 14px; border-radius: 14px; border: 1px solid var(--line); background: var(--surface-3); color: var(--text); font: inherit; }
textarea { min-height: 110px; resize: vertical; }
.section-head { display: flex; justify-content: space-between; align-items: start; gap: 12px; }
.stack-list { display: grid; gap: 14px; }
.item-card { border: 1px solid color-mix(in srgb, var(--line) 90%, transparent); border-radius: 18px; padding: 16px; background: var(--surface-3); }
.item-card.compact p { margin: 6px 0; }
.badge { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; background: color-mix(in srgb, var(--line) 25%, transparent); color: var(--muted); font-size: .9rem; }
.badge-success { background: color-mix(in srgb, var(--success) 18%, transparent); color: var(--success); }
.badge-warning { background: color-mix(in srgb, var(--warning) 18%, transparent); color: var(--warning); }
.alert { padding: 14px 16px; border-radius: 16px; margin: 12px 0; }
.alert.success { background: color-mix(in srgb, var(--success) 18%, transparent); color: var(--success); }
.alert.error { background: color-mix(in srgb, var(--danger) 18%, transparent); color: var(--danger); }
.alert.warning { background: color-mix(in srgb, var(--warning) 18%, transparent); color: var(--warning); }
.bullet-list { margin: 0; padding-inline-start: 20px; display: grid; gap: 10px; }
.auth-shell { padding: 48px 0 60px; }
.auth-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
.auth-card { background: var(--surface); border: 1px solid color-mix(in srgb, var(--line) 80%, transparent); border-radius: 28px; padding: 28px; box-shadow: var(--shadow); }
.auth-hero { background: linear-gradient(180deg, color-mix(in srgb, var(--primary) 10%, var(--surface)), var(--surface)); }
.auth-title { font-size: clamp(1.8rem, 3vw, 2.5rem); margin: 0; }
.auth-subtitle { color: var(--muted); line-height: 1.8; margin: 0; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.divider::before, .divider::after { content: ''; height: 1px; flex: 1; background: var(--line); }
.auth-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.note-list { display: grid; gap: 12px; margin-top: 16px; }
.note-item { padding: 14px; border-radius: 18px; background: var(--surface-2); }
.site-footer { padding: 30px 0 50px; border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent); }
.footer-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
.table-wrap { overflow-x: auto; }
.inline-code { font-family: monospace; font-size: .9rem; word-break: break-all; }
.muted { color: var(--muted); }

@media (max-width: 960px) {
  .grid-2, .grid-3, .card-hero, .footer-grid, .auth-grid, .auth-grid-2, .metric-grid { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; align-items: stretch; padding: 12px 0; }
  .nav-links { justify-content: center; }
  .header-actions { justify-content: space-between; flex-wrap: wrap; }
}