:root {
    --cs-primary: #0073d8;
    --cs-secondary: #aab3c3;
    --cs-danger: #e4052e;
    --cs-success: #03835d;
    --sidebar-width: 250px;
    --navbar-height: 56px;
}

body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f5f7fa;
}

/* Navbar */
.navbar.bg-primary {
    background-color: var(--cs-primary) !important;
    height: var(--navbar-height);
    z-index: 1050;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background-color: #fff;
    border-right: 1px solid #e0e4e8;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1040;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar .nav-link {
    color: #4a5568;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    border-radius: 0.375rem;
    margin: 0.1rem 0.5rem;
    transition: background-color 0.15s;
}

.sidebar .nav-link:hover:not(.disabled) {
    background-color: #edf2f7;
    color: var(--cs-primary);
}

.sidebar .nav-link.active {
    background-color: #e8f0fe;
    color: var(--cs-primary);
    font-weight: 600;
}

.sidebar .nav-link.disabled {
    color: #a0aec0;
    cursor: not-allowed;
}

.sidebar-heading {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #a0aec0;
    padding: 1rem 1.2rem 0.3rem;
    list-style: none;
}

/* Main content */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--navbar-height);
    padding: 1.5rem;
    transition: margin-left 0.3s ease;
}

.main-content.expanded {
    margin-left: 0;
}

/* Login */
.login-body {
    background: linear-gradient(135deg, var(--cs-primary) 0%, #004a8c 100%);
}

/* Toast auto-hide */
.toast.show {
    animation: fadeInToast 0.3s ease;
}

@keyframes fadeInToast {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.card {
    border-radius: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
}

/* Loader overlay (used by SiteUtils.showLoader / form[data-loader-target]) */
.cs-loader-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    border-radius: inherit;
}

/* Print styles */
@media print {
    .sidebar, .navbar, .no-print, .toast-container { display: none !important; }
    .main-content { margin-left: 0 !important; padding: 0 !important; }
    .card { break-inside: avoid; border: 1px solid #ddd !important; }
    .collapse:not(.show) { display: block !important; height: auto !important; }
    body { font-size: 10pt; }
    .table { font-size: 9pt; }
}

/* Transaction forms (Ventas, ComprasProveedores) */
#totalesPanel .total-row   { font-size: 1.05rem; }
#totalesPanel .total-final { font-size: 1.3rem; }
.scanner-section {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
}

/* Global DataTables filter input rounding */
.dataTables_filter input { border-radius: 6px; }

/* Sidebar search/filter (admin sidebar only) */
.sidebar-search { position: sticky; top: 0; background: #fff; z-index: 2; }
.sidebar-search .input-group-text { border-color: #e2e8f0; }
.sidebar-search .form-control:focus { box-shadow: none; border-color: var(--cs-primary); }
.sidebar-search .input-group:focus-within .input-group-text { border-color: var(--cs-primary); }
.sidebar-hidden { display: none !important; }