:root {
    --ceo-navy: #0f172a;
    --ceo-sidebar: #ffffff;
    --ceo-bg: #f1f5f9;
    --ceo-card: #ffffff;
    --ceo-border: #e2e8f0;
    --ceo-primary: #6366f1;
    --ceo-primary-soft: #eef2ff;
    --ceo-text: #0f172a;
    --ceo-muted: #64748b;
    --ceo-success: #16a34a;
    --ceo-danger: #dc2626;
    --ceo-warning: #ea580c;
    --ceo-sidebar-width: 260px;
}

* { box-sizing: border-box; }

body.ceo-os {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: var(--ceo-bg);
    color: var(--ceo-text);
    min-height: 100vh;
}

.ceo-shell {
    display: flex;
    min-height: 100vh;
}

.ceo-sidebar {
    width: var(--ceo-sidebar-width);
    background: var(--ceo-sidebar);
    border-right: 1px solid var(--ceo-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.ceo-brand {
    padding: 1.25rem 1.5rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--ceo-navy);
    border-bottom: 1px solid var(--ceo-border);
}

.ceo-brand span { color: var(--ceo-primary); }

.ceo-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0.5rem;
}

.ceo-nav a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.85rem;
    margin: 0.15rem 0;
    border-radius: 0.5rem;
    color: var(--ceo-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
}

.ceo-nav a:hover {
    background: #f8fafc;
    color: var(--ceo-text);
}

.ceo-nav a.active {
    background: var(--ceo-primary-soft);
    color: var(--ceo-primary);
}

.ceo-nav a i { font-size: 1.1rem; width: 1.25rem; text-align: center; }

.ceo-sidebar-user {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--ceo-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ceo-sidebar-user img,
.ceo-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--ceo-primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--ceo-primary);
    font-size: 0.85rem;
}

.ceo-sidebar-user .meta { flex: 1; min-width: 0; }
.ceo-sidebar-user .name { font-size: 0.875rem; font-weight: 600; }
.ceo-sidebar-user .role { font-size: 0.75rem; color: var(--ceo-muted); }

.ceo-main {
    flex: 1;
    margin-left: var(--ceo-sidebar-width);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.ceo-topbar {
    background: var(--ceo-card);
    border-bottom: 1px solid var(--ceo-border);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.ceo-topbar h1 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
}

.ceo-topbar .subtitle {
    margin: 0.25rem 0 0;
    font-size: 0.875rem;
    color: var(--ceo-muted);
}

.ceo-topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ceo-icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    border: 1px solid var(--ceo-border);
    border-radius: 0.5rem;
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ceo-muted);
    text-decoration: none;
}

.ceo-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--ceo-danger);
    color: #fff;
    font-size: 0.65rem;
    min-width: 16px;
    height: 16px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ceo-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.85rem;
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--ceo-border);
    background: #fff;
    color: var(--ceo-text);
    text-decoration: none;
    cursor: pointer;
}

.ceo-btn-primary {
    background: var(--ceo-primary);
    border-color: var(--ceo-primary);
    color: #fff;
}

.ceo-content {
    padding: 1.25rem 1.5rem 2rem;
    flex: 1;
}

.ceo-kpi-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 1400px) {
    .ceo-kpi-row { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .ceo-sidebar { transform: translateX(-100%); }
    .ceo-main { margin-left: 0; }
    .ceo-kpi-row { grid-template-columns: repeat(2, 1fr); }
}

.ceo-kpi {
    background: var(--ceo-card);
    border: 1px solid var(--ceo-border);
    border-radius: 0.75rem;
    padding: 1rem;
}

.ceo-kpi .label {
    font-size: 0.75rem;
    color: var(--ceo-muted);
    margin-bottom: 0.35rem;
}

.ceo-kpi .value {
    font-size: 1.25rem;
    font-weight: 700;
}

.ceo-kpi .delta {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.ceo-kpi .delta.up { color: var(--ceo-success); }
.ceo-kpi .delta.down { color: var(--ceo-danger); }

.ceo-grid {
    display: grid;
    gap: 1rem;
}

.ceo-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ceo-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ceo-grid-4 { grid-template-columns: 2fr 1fr 1fr; }

@media (max-width: 1200px) {
    .ceo-grid-2, .ceo-grid-3, .ceo-grid-4 { grid-template-columns: 1fr; }
}

.ceo-card {
    background: var(--ceo-card);
    border: 1px solid var(--ceo-border);
    border-radius: 0.75rem;
    padding: 1rem 1.15rem;
}

.ceo-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.85rem;
}

.ceo-card-header h3 {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 600;
}

.ceo-card-header a {
    font-size: 0.8rem;
    color: var(--ceo-primary);
    text-decoration: none;
}

.ceo-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.ceo-table th,
.ceo-table td {
    padding: 0.55rem 0.35rem;
    text-align: left;
    border-bottom: 1px solid var(--ceo-border);
}

.ceo-table th {
    color: var(--ceo-muted);
    font-weight: 500;
    font-size: 0.75rem;
}

.ceo-pill {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
}

.ceo-pill-success { background: #dcfce7; color: #166534; }
.ceo-pill-warning { background: #ffedd5; color: #9a3412; }
.ceo-pill-danger { background: #fee2e2; color: #991b1b; }
.ceo-pill-info { background: #dbeafe; color: #1e40af; }
.ceo-pill-muted { background: #f1f5f9; color: #475569; }

.ceo-alert-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--ceo-border);
    font-size: 0.8125rem;
}

.ceo-chart-wrap { position: relative; height: 220px; }
.ceo-chart-wrap.sm { height: 160px; }
.ceo-chart-wrap.lg { height: 280px; }

.ceo-brand-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.5rem;
    border-radius: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
}

.ceo-list-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--ceo-border);
    font-size: 0.8125rem;
}

.ceo-list-item:last-child { border-bottom: none; }

.ceo-progress {
    height: 6px;
    background: #e2e8f0;
    border-radius: 999px;
    overflow: hidden;
    margin-top: 0.35rem;
}

.ceo-progress > span {
    display: block;
    height: 100%;
    background: var(--ceo-primary);
    border-radius: 999px;
}

.ceo-login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #312e81 100%);
    padding: 2rem;
}

.ceo-login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.ceo-login-card h1 {
    margin: 0 0 0.25rem;
    font-size: 1.5rem;
}

.ceo-login-card .tagline {
    color: var(--ceo-muted);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.ceo-settings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 1100px) {
    .ceo-settings-grid { grid-template-columns: 1fr; }
}

.ceo-settings-link {
    display: flex;
    gap: 0.75rem;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--ceo-border);
    text-decoration: none;
    color: inherit;
    font-size: 0.875rem;
}

.ceo-settings-link:last-child { border-bottom: none; }
.ceo-settings-link strong { display: block; font-size: 0.875rem; }
.ceo-settings-link small { color: var(--ceo-muted); }

.ceo-quick-bar {
    position: sticky;
    bottom: 0;
    background: var(--ceo-navy);
    color: #fff;
    padding: 0.65rem 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 0.8rem;
}

.ceo-quick-bar a {
    color: #e2e8f0;
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: 0.35rem;
}

.ceo-quick-bar a:hover { background: rgba(255,255,255,0.1); }