:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-2: #1f2937;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #334155;
    --accent: #38bdf8;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #60a5fa;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    background: linear-gradient(180deg, #0b1220 0%, #111827 100%);
    color: var(--text);
}

a {
    color: var(--accent);
    text-decoration: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.topbar h1 {
    margin: 0;
    font-size: 1.75rem;
}

.topbar p {
    margin: 4px 0 0;
    color: var(--muted);
}

.demo-banner {
    display: inline-block;
    margin-top: 10px !important;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent) !important;
    font-size: 0.85rem;
    font-weight: 600;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}

.card-label {
    color: var(--muted);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.card-value {
    font-size: 1.6rem;
    font-weight: 700;
}

.filters,
.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    margin-bottom: 24px;
}

.filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    align-items: end;
}

label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--muted);
}

input,
select,
button {
    font: inherit;
}

input,
select {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
}

button,
.btn {
    background: var(--accent);
    color: #082f49;
    border: none;
    border-radius: 10px;
    padding: 10px 16px;
    font-weight: 600;
    cursor: pointer;
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.chart-panel {
    min-height: 320px;
}

.panel h2,
.chart-panel h2 {
    margin: 0 0 16px;
    font-size: 1.1rem;
}

.recommendations {
    display: grid;
    gap: 12px;
}

.rec-item {
    border-left: 4px solid var(--info);
    background: var(--panel-2);
    border-radius: 10px;
    padding: 12px 14px;
}

.rec-item.critical { border-left-color: var(--danger); }
.rec-item.warning { border-left-color: var(--warning); }
.rec-item.info { border-left-color: var(--info); }

.rec-title {
    font-weight: 700;
    margin-bottom: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    font-size: 0.92rem;
}

th {
    color: var(--muted);
    font-weight: 600;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge.success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge.failure { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 12px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    color: #fecaca;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.auth-card {
    width: min(420px, 92vw);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
}

.auth-card form {
    display: grid;
    gap: 14px;
}

.empty-state {
    color: var(--muted);
    padding: 24px 0;
}

@media (max-width: 768px) {
    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }
}