:root {
    --bg: #f5f7fa;
    --panel: #ffffff;
    --text: #1a202c;
    --text-muted: #718096;
    --border: #e2e8f0;
    --accent: #2563eb;
    --accent-text: #ffffff;
    --danger: #ef4444;
    --warn: #f59e0b;
    --good: #10b981;
    --sidebar-bg: #0f172a;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #1e293b;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f172a;
        --panel: #1e293b;
        --text: #e2e8f0;
        --text-muted: #94a3b8;
        --border: #334155;
        --sidebar-bg: #020617;
        --sidebar-active: #1e293b;
    }
}

* { box-sizing: border-box; }

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

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.login-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
    max-width: 380px;
    text-align: center;
}
.login-card h1 { margin: 0 0 0.25rem; }
.subtitle { color: var(--text-muted); margin: 0 0 2rem; }
.fine-print { color: var(--text-muted); font-size: 0.8rem; margin-top: 1.5rem; }

.btn {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
}
.btn-google { background: var(--accent); color: var(--accent-text); border: none; width: 100%; }
.btn-primary { background: var(--accent); color: var(--accent-text); border: none; }
.btn-danger { background: var(--danger); color: #fff; border: none; }

/* Dashboard shell */
.shell { display: flex; min-height: 100vh; }
.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 1.5rem 0;
    display: flex;
    flex-direction: column;
}
.sidebar .brand { padding: 0 1.25rem 1.5rem; font-size: 1.2rem; font-weight: 600; color: #fff; }
.sidebar nav { display: flex; flex-direction: column; }
.sidebar nav a {
    color: var(--sidebar-text);
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
}
.sidebar nav a.active { background: var(--sidebar-active); color: #fff; border-left: 3px solid var(--accent); }
.sidebar .signout { margin-top: auto; padding: 0.75rem 1.25rem; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
    flex-wrap: wrap;
}
.topbar select, .topbar input[type="date"] {
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.content { padding: 1.5rem; overflow-x: auto; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
}
.card .label { color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
.card .value { font-size: 1.8rem; font-weight: 700; margin: 0.25rem 0; }
.card .detail { color: var(--text-muted); font-size: 0.85rem; }

.section { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 1.25rem; margin-bottom: 1.5rem; }
.section h2 { margin-top: 0; font-size: 1.05rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 500; }

.badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-high { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-medium { background: rgba(245,158,11,0.15); color: var(--warn); }
.badge-low { background: rgba(148,163,184,0.2); color: var(--text-muted); }
.badge-good { background: rgba(16,185,129,0.15); color: var(--good); }

.empty-state { color: var(--text-muted); text-align: center; padding: 2rem; }

canvas { max-width: 100%; }

/* Pairing-code modal (used by auth.js) */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5);
    display: flex; align-items: center; justify-content: center; z-index: 1000;
}
.modal {
    background: var(--panel); border-radius: 10px; padding: 1.75rem; max-width: 360px; width: 90%;
}
.modal h2 { margin-top: 0; }
.modal input {
    width: 100%; padding: 0.6rem; margin: 0.75rem 0; border-radius: 6px;
    border: 1px solid var(--border); background: var(--bg); color: var(--text);
}