:root {
    --sidebar-width: 260px;
    --primary: #1a5276;
    --danger: #c0392b;
    --success: #1e8449;
    --warning: #d68910;
}

body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background-color: var(--primary);
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 100;
    padding-top: 60px;
}

[dir="rtl"] .sidebar {
    right: 0;
    left: auto;
}

[dir="ltr"] .sidebar {
    left: 0;
    right: auto;
}

.main-content {
    margin-left: var(--sidebar-width);
    padding: 20px;
    padding-top: 80px;
}

[dir="rtl"] .main-content {
    margin-left: 0;
    margin-right: var(--sidebar-width);
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 10px 20px;
    border-radius: 5px;
    margin: 2px 8px;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: #fff;
    background-color: rgba(255,255,255,0.15);
}

.card-stat {
    border-left: 4px solid var(--primary);
    border-radius: 8px;
}

[dir="rtl"] .card-stat {
    border-left: none;
    border-right: 4px solid var(--primary);
}

.badge-expiring { background-color: var(--warning); }
.badge-expired  { background-color: var(--danger); }
.badge-valid    { background-color: var(--success); }

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        min-height: auto;
        position: relative;
        padding-top: 0;
    }
    .main-content {
        margin-left: 0;
        margin-right: 0;
        padding-top: 20px;
    }
}

/* Mobile enhancements for driver interface */
@media (max-width: 768px) {
    .sidebar {
        display: none !important;
    }
    .sidebar.show {
        display: flex !important;
    }
    .main-content {
        padding: 12px;
        padding-top: 70px;
    }
    .table-responsive {
        font-size: .85rem;
    }
    .btn-sm {
        padding: .3rem .6rem;
        font-size: .8rem;
    }
    /* Larger tap targets for drivers */
    .driver-action-btn {
        min-height: 48px;
        font-size: 1rem;
    }
}

/* Mobile top navbar toggle */
.navbar-toggler-driver {
    display: none;
}
@media (max-width: 768px) {
    .navbar-toggler-driver {
        display: inline-flex;
    }
}