:root {
    --bs-primary: #0B6E9E;
    --bs-primary-rgb: 11, 110, 158;
    --bs-success: #16A34A;
    --bs-warning: #D97706;
    --bs-danger: #DC2626;
    --bs-info: #0B5FAD;
    --bs-body-font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --bs-body-color: #334155;
    --bs-link-color: #0B6E9E;
    --bs-link-hover-color: #095A82;

    --admin-sidebar-bg: #0F172A;
    --admin-sidebar-text: #CBD5E1;
    --admin-sidebar-active: #0B6E9E;
    --admin-topbar-bg: #FFFFFF;
    --admin-topbar-border: #E2E8F0;
}

body {
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    min-height: 100vh;
    background: var(--admin-sidebar-bg);
    color: var(--admin-sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.admin-sidebar .nav-link {
    color: var(--admin-sidebar-text);
    padding: 0.75rem 1.25rem;
    border-radius: 0.375rem;
    margin: 0.125rem 0.75rem;
    font-size: 0.9rem;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
    background: rgba(255,255,255,0.1);
    color: #FFFFFF;
}

.admin-sidebar .nav-link.active {
    background: var(--admin-sidebar-active);
}

.admin-sidebar .brand {
    padding: 1.25rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #FFFFFF;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 0.5rem;
}

.admin-content {
    margin-left: 250px;
    min-height: 100vh;
}

.admin-topbar {
    background: var(--admin-topbar-bg);
    border-bottom: 1px solid var(--admin-topbar-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.admin-main {
    padding: 1.5rem;
}

.btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.btn-primary:hover {
    background-color: #095A82;
    border-color: #095A82;
}

.stat-card {
    border: 1px solid #E2E8F0;
    border-radius: 0.5rem;
    padding: 1.25rem;
    background: #FFFFFF;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1E293B;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: #64748B;
    margin-top: 0.25rem;
}

.country-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: #F1F5F9;
    color: #334155;
}

.country-foreign {
    background: #FEF3C7;
    color: #92400E;
}

.country-unknown {
    background: #F1F5F9;
    color: #94A3B8;
}

.login-container {
    max-width: 400px;
    margin: 80px auto;
}

.admin-sidebar-toggle {
    display: none;
}

.admin-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 999;
}

@media (max-width: 767.98px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        width: 240px;
    }
    .admin-sidebar.is-open {
        transform: translateX(0);
    }
    .admin-sidebar-backdrop.is-open {
        display: block;
    }
    .admin-content {
        margin-left: 0;
    }
    .admin-sidebar-toggle {
        display: inline-flex;
    }
    .admin-main {
        padding: 1rem;
    }
}