:root {
    --bg: #08111f;
    --panel: rgba(12, 23, 40, 0.92);
    --panel-soft: rgba(17, 31, 56, 0.92);
    --border: rgba(103, 182, 255, 0.24);
    --text: #e8f1ff;
    --muted: #9cb5d8;
    --primary: #4da3ff;
    --secondary: #7d7bff;
    --accent: #22d3ee;
    --alert: #fbbf24;
    --success: #34d399;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top right, rgba(77, 163, 255, 0.25), transparent 26%),
        radial-gradient(circle at bottom left, rgba(125, 123, 255, 0.22), transparent 30%),
        linear-gradient(180deg, #050b15 0%, #0a1324 100%);
    color: var(--text);
}
.shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 320px 1fr;
}
.sidebar {
    padding: 24px;
    background: rgba(4, 10, 19, 0.88);
    border-right: 1px solid var(--border);
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand-card, .panel, .metric-card, .info-card, .list-card, .sidebar-note {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
}
.brand-card {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 16px;
    padding: 18px;
    margin-bottom: 18px;
    background: linear-gradient(135deg, rgba(77, 163, 255, 0.18), rgba(125, 123, 255, 0.24));
}
.brand-badge {
    width: 64px; height: 64px; border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.eyebrow { color: var(--accent); font-size: .78rem; text-transform: uppercase; letter-spacing: .14em; }
.brand-card h1, .hero h2, .panel-heading h3, .info-card h4 { margin: 4px 0; }
.brand-card p, .hero p, .sidebar-note p, .info-card p, .list-card p, .note-box p { color: var(--muted); line-height: 1.55; }
.nav-list { display: grid; gap: 10px; margin-bottom: 18px; }
.nav-link {
    color: var(--text); text-decoration: none; padding: 14px 16px; border-radius: 18px;
    background: rgba(255,255,255,.02); border: 1px solid transparent; transition: .2s ease;
}
.nav-link:hover, .nav-link.is-active { background: rgba(77,163,255,.12); border-color: var(--border); }
.sidebar-note { padding: 18px; }
.main-content { padding: 26px; }
.hero {
    display: flex; justify-content: space-between; gap: 20px; align-items: flex-start;
    padding: 26px; border-radius: 28px; border: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(77,163,255,.16), rgba(125,123,255,.18));
    box-shadow: var(--shadow); margin-bottom: 22px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; text-decoration: none;
    padding: 12px 18px; border-radius: 16px; font-weight: 700; border: 1px solid var(--border);
}
.btn-primary { color: #03111f; background: linear-gradient(135deg, var(--accent), #86efac); }
.btn-secondary { color: var(--text); background: rgba(255,255,255,.04); }
.panel { padding: 20px; }
.filters-panel { margin-bottom: 22px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.chip, .badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 999px;
    background: rgba(77,163,255,.12); color: #dbeafe; border: 1px solid var(--border); font-size: .82rem;
}
.badge.is-alert { background: rgba(251,191,36,.12); color: #fde68a; }
.filter-grid, .stats-grid, .card-grid, .content-grid {
    display: grid; gap: 16px;
}
.filter-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.filter-grid label span { display: block; margin-bottom: 8px; color: var(--muted); font-size: .9rem; }
select {
    width: 100%; border-radius: 16px; border: 2px solid rgba(77,163,255,.24); background: var(--panel-soft);
    color: var(--text); padding: 12px 14px; outline: none;
}
.stats-grid { grid-template-columns: repeat(6, minmax(0,1fr)); margin-bottom: 22px; }
.metric-card { padding: 18px; }
.metric-card span { display: block; color: var(--muted); margin-bottom: 8px; }
.metric-card strong { font-size: 1.65rem; }
.content-grid.two-col { grid-template-columns: 1.2fr 1fr; margin-bottom: 18px; }
.content-grid.single-col { grid-template-columns: 1fr; }
.card-grid.two-col { grid-template-columns: repeat(2, minmax(0,1fr)); }
.card-grid.three-col { grid-template-columns: repeat(3, minmax(0,1fr)); }
.info-card, .list-card { padding: 18px; }
.highlight-card { background: linear-gradient(135deg, rgba(77,163,255,.15), rgba(34,211,238,.08)); }
.stack-list { display: grid; gap: 12px; }
.list-card { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.list-card.compact { align-items: center; }
.meta-right { text-align: right; display: grid; gap: 6px; }
.table-grid { width: 100%; border-collapse: collapse; }
.table-grid th, .table-grid td { padding: 12px 10px; border-bottom: 1px solid rgba(156,181,216,.14); text-align: left; }
.table-grid th { color: #f8fbff; background: linear-gradient(135deg, rgba(77,163,255,.28), rgba(125,123,255,.24)); }
.note-box {
    margin-top: 14px; padding: 16px; border-radius: 18px; border: 1px dashed rgba(77,163,255,.36);
    background: rgba(77,163,255,.08);
}
@media (max-width: 1200px) {
    .shell { grid-template-columns: 1fr; }
    .sidebar { position: relative; height: auto; }
    .stats-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .content-grid.two-col, .filter-grid, .card-grid.three-col { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .main-content, .sidebar { padding: 16px; }
    .hero { flex-direction: column; }
    .stats-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .card-grid.two-col { grid-template-columns: 1fr; }
}