* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2196F3;
    --secondary-color: #757575;
    --success-color: #4CAF50;
    --danger-color: #f44336;
    --warning-color: #FF9800;
    --info-color: #00BCD4;
    --bg-color: #f5f5f5;
    --sidebar-bg: #1a1a2e;
    --sidebar-hover: #16213e;
    --text-dark: #333;
    --text-light: #666;
    --border-color: #ddd;
    --white: #fff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-color);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), #1976D2);
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
}

.logo-section h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 5px;
}

.logo-section p {
    color: var(--text-light);
    font-size: 14px;
}

.login-form {
    margin-top: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--white);
}

.btn-secondary:hover {
    background: #616161;
}

.btn-danger {
    background: var(--danger-color);
    color: var(--white);
}

.btn-danger:hover {
    background: #d32f2f;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 13px;
}

/* Alert Messages */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid var(--danger-color);
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

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

.sidebar-logo {
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--white);
}

.nav-item.active {
    background: var(--primary-color);
    color: var(--white);
}

.nav-item svg {
    flex-shrink: 0;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

.top-header {
    background: var(--white);
    padding: 20px 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-header h1 {
    font-size: 24px;
    font-weight: 600;
}

.user-menu {
    position: relative;
    cursor: pointer;
}

.user-menu > div:first-child:hover {
    background: var(--bg-color);
}

.user-name {
    padding: 8px 16px;
    background: var(--bg-color);
    border-radius: 6px;
    font-weight: 500;
}

/* Keep dropdown visible when hovering over menu container or dropdown itself */
.user-menu:hover .user-dropdown,
.user-dropdown:hover {
    display: block !important;
}

.user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 6px;
    min-width: 180px;
    z-index: 1000;
    padding: 8px 0;
}

/* Invisible bridge to prevent gap */
.user-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
    background: transparent;
}

.user-dropdown a {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: var(--text-dark);
    text-decoration: none;
    transition: background 0.2s;
    white-space: nowrap;
}

.user-dropdown a:hover {
    background: var(--bg-color);
}

.user-dropdown a:first-child {
    border-radius: 6px 6px 0 0;
}

.user-dropdown a:last-child {
    border-radius: 0 0 6px 6px;
}

/* Content Wrapper */
.content-wrapper {
    flex: 1;
    padding: 30px;
}

/* Dashboard Stats */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.stat-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-content p {
    color: var(--text-light);
    font-size: 14px;
}

/* Dashboard Content */
.dashboard-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Content Section */
.content-section {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
}

/* Page Actions */
.page-actions {
    margin-bottom: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Table */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.data-table thead {
    background: var(--bg-color);
}

.data-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: var(--bg-color);
}

.text-center {
    text-align: center;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #e8f5e9;
    color: #2e7d32;
}

.badge-danger {
    background: #ffebee;
    color: #c62828;
}

.badge-warning {
    background: #fff3e0;
    color: #e65100;
}

.badge-info {
    background: #e0f7fa;
    color: #006064;
}

/* Button Icon */
.btn-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    transition: background 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-color);
}

.btn-icon svg {
    stroke: var(--primary-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow: auto;
    animation: slideIn 0.3s;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-large {
    max-width: 900px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close {
    color: var(--text-light);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--text-dark);
}

.modal-content form {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* Detail View */
.detail-view {
    padding: 20px;
}

.detail-row {
    margin-bottom: 16px;
}

.detail-row strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.detail-item {
    padding: 12px;
    background: var(--bg-color);
    border-radius: 6px;
}

.detail-item strong {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--text-light);
}

pre {
    background: var(--bg-color);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 13px;
}

/* Filters */
.filter-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: end;
}

.inline-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.inline-form .form-group {
    margin-bottom: 0;
}

/* Report Sections */
.report-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.report-sections {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.report-section {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.report-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.attendance-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.summary-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-color);
    border-radius: 8px;
}

.summary-item .badge {
    font-size: 20px;
    padding: 8px 16px;
}

/* Backup Actions */
.backup-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.action-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.action-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.action-card p {
    color: var(--text-light);
    margin-bottom: 16px;
    font-size: 14px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}

.page-info {
    color: var(--text-light);
    font-size: 14px;
}

/* Bulk Attendance List */
.bulk-attendance-list {
    max-height: 400px;
    overflow-y: auto;
    margin: 20px 0;
}

/* Print Styles */
@media print {
    .sidebar,
    .top-header,
    .page-actions,
    .btn,
    .modal {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }
    
    .sidebar-header h2,
    .nav-item span {
        display: none;
    }
    
    .main-content {
        margin-left: 70px;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}
/* Full-screen blurred background for login pages */
body.login-page {
    position: relative;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

/* Background image */
body.login-page::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/bg.jpg') no-repeat center center/cover;
    filter: blur(8px);
    transform: scale(1.05); /* compensate for blur edges */
    z-index: -1;
}