:root {
        --primary-color: #2c3e50;
        --secondary-color: #3498db;
        --success-color: #27ae60;
        --danger-color: #e74c3c;
        --warning-color: #f39c12;
        --info-color: #17a2b8;
        --sidebar-width: 280px;
        --transition-speed: 0.3s;
    }

    * {
        transition: all var(--transition-speed) ease;
    }

    body {
        font-family: 'Poppins', sans-serif;
        background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        min-height: 100vh;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: var(--sidebar-width);
        background: linear-gradient(135deg, var(--primary-color), #34495e);
        color: white;
        z-index: 1000;
        transition: all var(--transition-speed) ease;
        overflow-y: auto;
        overflow-x: hidden;
        box-shadow: 4px 0 15px rgba(0,0,0,0.1);
    }

    .sidebar.collapsed {
        width: 110px;
    }

    .sidebar-header {
        padding: 25px 20px;
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        background: rgba(0,0,0,0.1);
    }

    .sidebar-header h4 {
        margin: 0;
        font-size: 1.3rem;
        font-weight: 600;
    }

    .sidebar-header .logo {
        width: 40px;
        height: 40px;
        background: var(--secondary-color);
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 10px;
    }

    .sidebar.collapsed .sidebar-header h4,
    .sidebar.collapsed .sidebar-header .logo + span {
        display: none;
    }
.navstyle {
    color: rgba(255,255,255,0.8) !important;
    padding: 15px 20px;
    border-radius: 0;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
    display: block;
    padding: var(--bs-nav-link-padding-y) var(--bs-nav-link-padding-x);
    font-size: var(--bs-nav-link-font-size);
    font-weight: var(--bs-nav-link-font-weight);
    color: var(--bs-nav-link-color);
    text-decoration: none;
    background: 0 0;
    border: 0;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out;
}
    .nav-link {
        color: rgba(255,255,255,0.8) !important;
        padding: 15px 20px;
        border-radius: 0;
        transition: all var(--transition-speed) ease;
        position: relative;
        overflow: hidden;
    }

    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
        transition: left 0.5s;
    }

    .nav-link:hover::before {
        left: 100%;
    }

    .nav-link:hover, .nav-link.active {
        background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
        color: white !important;
        transform: translateX(5px);
        box-shadow: inset 4px 0 0 var(--secondary-color);
    }

.navstyle i {
    width: 20px;
    margin-right: 15px;
    font-size: 1.1rem;
}
        .nav-link i {
            width: 20px;
            margin-right: 15px;
            font-size: 1.1rem;
        }

    .sidebar.collapsed .nav-link span {
        display: none;
    }

    .sidebar.collapsed .nav-link {
        text-align: center;
        padding: 15px 10px;
    }

    .main-content {
        margin-left: var(--sidebar-width);
        transition: all var(--transition-speed) ease;
        min-height: 100vh;
        padding: 0;
    }

    .main-content.expanded {
        margin-left: 70px;
    }

    .top-navbar {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        box-shadow: 0 2px 20px rgba(0,0,0,0.1);
        padding: 20px 30px;
        margin-bottom: 30px;
        position: sticky;
        top: 0;
        z-index: 999;
    }

    .stats-card {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 30px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        transition: all var(--transition-speed) ease;
        border: 1px solid rgba(255,255,255,0.2);
        position: relative;
        overflow: hidden;
    }

    .stats-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, var(--secondary-color), var(--info-color));
    }

    .stats-card:hover {
        transform: translateY(-10px) scale(1.02);
        box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    }

    .stats-card.success::before {
        background: linear-gradient(90deg, var(--success-color), #2ecc71);
    }

    .stats-card.warning::before {
        background: linear-gradient(90deg, var(--warning-color), #e67e22);
    }

    .stats-card.danger::before {
        background: linear-gradient(90deg, var(--danger-color), #c0392b);
    }

    .stats-number {
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 10px;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .stats-icon {
        font-size: 3rem;
        opacity: 0.8;
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.1); }
        100% { transform: scale(1); }
    }

    .chart-container {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 30px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        margin-bottom: 30px;
        border: 1px solid rgba(255,255,255,0.2);
        position: relative;
        overflow: hidden;
    }

    .chart-container::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(52,152,219,0.05) 0%, transparent 70%);
        animation: rotate 20s linear infinite;
        pointer-events: none;
    }

    @keyframes rotate {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

    .chart-container h5 {
        position: relative;
        z-index: 2;
        color: var(--primary-color);
        font-weight: 600;
        margin-bottom: 20px;
    }

    .user-table {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        overflow: hidden;
        border: 1px solid rgba(255,255,255,0.2);
    }

    .table th {
        background: linear-gradient(135deg, var(--primary-color), #34495e);
        color: white;
        border: none;
        font-weight: 600;
        padding: 20px 15px;
        position: relative;
    }

    .table td {
        padding: 15px;
        vertical-align: middle;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }

    .table tbody tr {
        transition: all var(--transition-speed) ease;
    }

    .table tbody tr:hover {
        background: rgba(52,152,219,0.05);
        transform: scale(1.01);
    }

    .badge-role {
        font-size: 0.8rem;
        padding: 8px 12px;
        border-radius: 20px;
        font-weight: 500;
    }

    .status-toggle {
        cursor: pointer;
        font-size: 1.5rem;
        transition: all var(--transition-speed) ease;
    }

    .status-toggle:hover {
        transform: scale(1.2);
    }

    .btn-action {
        padding: 8px 12px;
        margin: 2px;
        border-radius: 8px;
        transition: all var(--transition-speed) ease;
        position: relative;
        overflow: hidden;
    }

    .btn-action::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255,255,255,0.3);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: all 0.3s ease;
    }

    .btn-action:hover::before {
        width: 100px;
        height: 100px;
    }

    .btn-action:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    }

    .modal-content {
        border-radius: 15px;
        border: none;
        box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    }

    .modal-header {
        background: linear-gradient(135deg, var(--primary-color), #34495e);
        color: white;
        border-radius: 15px 15px 0 0;
        padding: 20px 30px;
    }

    .form-control, .form-select {
        border-radius: 10px;
        border: 2px solid #e9ecef;
        padding: 12px 15px;
        transition: all var(--transition-speed) ease;
    }

    .form-control:focus, .form-select:focus {
        border-color: var(--secondary-color);
        box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
        transform: translateY(-2px);
    }

    .sidebar-toggle {
        background: none;
        border: none;
        color: var(--primary-color);
        font-size: 1.3rem;
        cursor: pointer;
        padding: 10px;
        border-radius: 8px;
        transition: all var(--transition-speed) ease;
    }

    .sidebar-toggle:hover {
        background: rgba(52,152,219,0.1);
        transform: rotate(90deg);
    }

    .notification-badge {
        position: absolute;
        top: 3px;
        right: 3px;
        background: var(--danger-color);
        color: white;
        border-radius: 50%;
        width: 20px;
        height: 20px;
        font-size: 0.7rem;
        display: flex;
        align-items: center;
        justify-content: center;
        animation: bounce 1s infinite;
    }

    @keyframes bounce {
        0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
        40% { transform: translateY(-10px); }
        60% { transform: translateY(-5px); }
    }

    .password-request-card {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 25px;
        margin-bottom: 20px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        border-left: 4px solid var(--warning-color);
        transition: all var(--transition-speed) ease;
    }

    .password-request-card:hover {
        transform: translateX(5px);
        box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    }

    .tab-content {
        animation: fadeInUp 0.5s ease;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /*.loading-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(255,255,255,0.9);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 9999;
        backdrop-filter: blur(5px);
    }

    .loading-spinner {
        width: 60px;
        height: 60px;
        border: 4px solid #f3f3f3;
        border-top: 4px solid var(--secondary-color);
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }*/

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }

.nav-tabs .navstyle {
    border-radius: 10px 10px 0 0;
    border: none;
    background: rgba(255,255,255,0.7);
    color: var(--primary-color);
    margin-right: 5px;
    transition: all var(--transition-speed) ease;
}
    .nav-tabs .nav-link {
        border-radius: 10px 10px 0 0;
        border: none;
        background: rgba(255,255,255,0.7);
        color: var(--primary-color);
        margin-right: 5px;
        transition: all var(--transition-speed) ease;
    }
.nav-tabs .navstyle.active {
    background: white;
    color: var(--secondary-color);
    box-shadow: 0 -5px 15px rgba(0,0,0,0.1);
}

.nav-tabs .navstyle:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-2px);
}
    .nav-tabs .nav-link.active {
        background: white;
        color: var(--secondary-color);
        box-shadow: 0 -5px 15px rgba(0,0,0,0.1);
    }

    .nav-tabs .nav-link:hover {
        background: rgba(255,255,255,0.9);
        transform: translateY(-2px);
    }

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

        .stats-card {
            margin-bottom: 20px;
        }
    }

    .real-time-indicator {
        display: inline-block;
        width: 8px;
        height: 8px;
        background: var(--success-color);
        border-radius: 50%;
        animation: blink 1s infinite;
        margin-right: 5px;
    }

    @keyframes blink {
        0%, 50% { opacity: 1; }
        51%, 100% { opacity: 0.3; }
    }

    .pdf-viewer-container {
        border: 1px solid #e0e0e0;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        background-color: #f8f9fa;
    }

    .pdf-viewer-container iframe {
        width: 100%;
        height: 600px; /* Fixed height for PDF viewer */
        border: none;
    }

    .status-timeline-card {
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.1);
        border: 1px solid rgba(255,255,255,0.2);
        height: 100%; /* Ensure it fills the height */
    }

    .status-timeline-card h6 {
        color: var(--primary-color);
        font-weight: 600;
        margin-bottom: 15px;
    }

    .status-timeline-card .table th,
    .status-timeline-card .table td {
        padding: 8px;
        font-size: 0.9rem;
    }

    .status-timeline-card .table th {
        background: var(--primary-color);
        color: white;
    }

    .status-timeline-card .table tbody tr:last-child td {
        border-bottom: none;
    }

.submenu {
    display: none;
    padding-left: 20px;
}

.has-submenu.active > .submenu {
    display: block;
}

.submenu-toggle-icon {
    float: right;
}