:root {
  --bg: #f7f8fa;
  --card-bg: #ffffff;
  --border: #e2e5ea;
  --text: #1a1d23;
  --text-muted: #6b7280;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ── Auth pages ──────────────────────────────────────────── */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.auth-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 380px;
}

.auth-card h1 {
  font-size: 20px;
  margin: 0 0 4px;
}

.auth-subtitle {
  color: var(--text-muted);
  margin: 0 0 24px;
  font-size: 14px;
}

/* ── Forms ───────────────────────────────────────────────── */
form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 16px 0 6px;
}

form label:first-of-type { margin-top: 0; }

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: white;
  border-color: var(--border);
  color: var(--text);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-full {
  width: 100%;
  margin-top: 20px;
}

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
}

.alert-error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
}

.alert-success {
  background: #f0fdf4;
  color: var(--success);
  border: 1px solid #bbf7d0;
}

/* ── Layout (app shell, used once dashboard is built) ──────── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
}

.sidebar a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 4px;
}

.sidebar a.active {
  background: #eef2ff;
  color: var(--primary);
  font-weight: 600;
}

.main-content {
  flex: 1;
  padding: 32px;
}

/* ── Cards / stats ───────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

th {
  background: #fafbfc;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.03em;
}

tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: #f0fdf4; color: var(--success); }
.badge-error { background: #fef2f2; color: var(--danger); }
.badge-muted { background: #f3f4f6; color: var(--text-muted); }