:root {
    --bg: #f4efe7;
    --panel: #fffdf9;
    --ink: #1b1a18;
    --muted: #6f6a63;
    --line: #ded6cc;
    --accent: #b35c2e;
    --accent-dark: #8f451f;
    --success: #2f7d4f;
    --warning: #b07820;
    --danger: #b33d32;
    --radius: 18px;
    --shadow: 0 16px 40px rgba(42, 28, 17, 0.08);
    font-family: "Segoe UI", Tahoma, sans-serif;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    background: radial-gradient(circle at top left, rgba(179, 92, 46, 0.16), transparent 30%), linear-gradient(180deg, #f8f3ec 0%, #f1e8db 100%);
    color: var(--ink);
}
.maintenance-banner { padding: 12px 18px; background: #2e2a24; color: #fff3e3; text-align: center; }
.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { padding: 24px; border-right: 1px solid var(--line); background: rgba(255, 253, 249, 0.8); }
.brand { font-size: 1.25rem; font-weight: 700; margin-bottom: 24px; }
.nav { display: flex; flex-direction: column; gap: 10px; }
.nav a { color: var(--ink); text-decoration: none; padding: 12px 14px; border-radius: 12px; }
.nav a:hover { background: rgba(179, 92, 46, 0.08); }
.main { padding: 24px; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.user-pill { background: var(--panel); padding: 10px 14px; border-radius: 999px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 20px; margin-bottom: 20px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid rgba(222, 214, 204, 0.9); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.label { display: block; color: var(--muted); font-size: 0.85rem; margin-bottom: 8px; }
.muted { color: var(--muted); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; border-bottom: 1px solid var(--line); text-align: left; }
.badge { display: inline-block; padding: 5px 10px; border-radius: 999px; font-size: 0.8rem; background: #eee4da; }
.badge-active, .badge-completed, .badge-paid, .badge-open { background: rgba(47, 125, 79, 0.12); color: var(--success); }
.badge-suspended, .badge-overdue, .badge-urgent { background: rgba(179, 61, 50, 0.12); color: var(--danger); }
.badge-pending, .badge-in_progress, .badge-waiting_client { background: rgba(176, 120, 32, 0.14); color: var(--warning); }
form { display: grid; gap: 12px; }
input, select, textarea, button { width: 100%; font: inherit; border-radius: 12px; }
input, select, textarea { border: 1px solid var(--line); padding: 12px; background: #fff; }
button { border: 0; background: var(--accent); color: #fff; padding: 12px 16px; cursor: pointer; }
button:hover { background: var(--accent-dark); }
.stack-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.auth-page { display: grid; place-items: center; min-height: 100vh; }
.auth-card { width: min(420px, 92vw); padding: 28px; background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); }
.alert { padding: 12px; border-radius: 12px; margin-bottom: 12px; }
.alert-error { background: rgba(179, 61, 50, 0.12); color: var(--danger); }
@media (max-width: 960px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
    .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
}