:root {
    color-scheme: light;
    --bg: #f6faf9;
    --surface: #ffffff;
    --text: #18211f;
    --muted: #62716f;
    --line: #dce7e4;
    --primary: #0e7c7b;
    --secondary: #2f5d9f;
    --danger: #b3261e;
    --warn: #a95d00;
    --radius: 8px;
}

body.dark {
    color-scheme: dark;
    --bg: #101413;
    --surface: #191f1e;
    --text: #eef7f5;
    --muted: #a8b8b5;
    --line: #2d3836;
    --primary: #70d6ce;
    --secondary: #aec6ff;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}
a { color: inherit; text-decoration: none; }
.app { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.sidebar { padding: 20px; border-right: 1px solid var(--line); background: var(--surface); position: sticky; top: 0; height: 100vh; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; margin-bottom: 24px; }
.logo { width: 34px; height: 34px; border-radius: 8px; background: var(--primary); display: grid; place-items: center; color: #fff; }
.nav a { display: block; padding: 11px 12px; border-radius: var(--radius); color: var(--muted); margin-bottom: 4px; }
.nav a.active, .nav a:hover { background: color-mix(in srgb, var(--primary) 13%, transparent); color: var(--text); }
.main { padding: 22px; max-width: 1240px; width: 100%; margin: 0 auto; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.topbar h1 { margin: 0; font-size: clamp(24px, 4vw, 34px); letter-spacing: 0; }
.grid { display: grid; gap: 14px; }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.hero { background: var(--primary); color: #fff; border: 0; }
.metric-label { color: var(--muted); font-size: 13px; }
.hero .metric-label { color: rgba(255,255,255,.76); }
.metric { font-size: 28px; font-weight: 800; margin-top: 6px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.button, button { border: 0; border-radius: var(--radius); padding: 10px 13px; background: var(--primary); color: #fff; font-weight: 700; cursor: pointer; }
.button.secondary, button.secondary { background: var(--secondary); }
.button.ghost, button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.button.danger, button.danger { background: var(--danger); }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 10px 11px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
}
label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 11px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 9px; background: color-mix(in srgb, var(--secondary) 14%, transparent); font-size: 12px; color: var(--text); }
.progress { height: 10px; background: color-mix(in srgb, var(--line) 70%, transparent); border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--primary); width: var(--value); }
.progress.warn > span { background: var(--warn); }
.progress.danger > span { background: var(--danger); }
.flash { background: color-mix(in srgb, var(--primary) 16%, transparent); border: 1px solid var(--line); padding: 12px 14px; border-radius: var(--radius); margin-bottom: 14px; }
.empty { text-align: center; color: var(--muted); padding: 36px 12px; }
.auth { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.auth .card { width: min(460px, 100%); }
.chart-bar { height: 12px; border-radius: 999px; background: var(--line); overflow: hidden; }
.chart-bar span { display: block; height: 100%; background: var(--primary); }
.landing { min-height: calc(100vh - 72px); display: grid; align-content: center; gap: 20px; }
.landing-hero { align-items: center; }
.landing-hero h1 { font-size: clamp(42px, 7vw, 72px); line-height: 1; margin: 0 0 16px; letter-spacing: 0; }
.landing-hero p { font-size: 18px; max-width: 620px; }
.landing-preview { box-shadow: 0 24px 80px rgba(14, 124, 123, .22); }
.preview-card { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.2); }
.landing-cards { margin-top: 4px; }
.pricing-section { margin-top: 18px; }
.pricing-section h2, .plan-card h3 { margin: 0; }
.plan-card { display: grid; align-content: start; gap: 10px; }
.feature-list { margin: 4px 0 0; padding-left: 20px; color: var(--muted); }
.feature-list li { margin: 6px 0; }
.admin-plan { border-top: 1px solid var(--line); padding-top: 14px; margin-top: 14px; }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); text-align: center; padding: 20px; background: var(--surface); font-size: 13px; }
@media (max-width: 860px) {
    .app { display: block; }
    .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
    .nav { display: flex; overflow-x: auto; gap: 6px; }
    .nav a { white-space: nowrap; }
    .main { padding: 14px; }
    .landing { align-content: start; }
    .landing-hero h1 { font-size: 42px; }
    .grid.cols-4, .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
    table { display: block; overflow-x: auto; white-space: nowrap; }
}