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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --border-color: #e2e8f0;
    --sidebar-width: 260px;
    --topbar-height: 60px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-color);
    color: #334155;
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

.login-box {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.login-header {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 40px 20px;
}

.login-header i {
    font-size: 48px;
    margin-bottom: 10px;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.login-header p {
    font-size: 14px;
    opacity: 0.9;
}

.login-form {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group label i {
    margin-right: 5px;
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.login-footer {
    text-align: center;
    padding: 20px;
    background: var(--light-color);
    font-size: 13px;
    color: var(--secondary-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    text-align: center;
}

.btn i {
    margin-right: 5px;
}

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn-success:hover {
    background: #16a34a;
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-warning:hover {
    background: #d97706;
}

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

.btn-info:hover {
    background: #2563eb;
}

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

.btn-secondary:hover {
    background: #475569;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-group {
    display: flex;
    gap: 10px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.alert i {
    margin-right: 10px;
    font-size: 18px;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--dark-color);
    color: white;
    overflow-y: auto;
    z-index: 1000;
    transition: all 0.3s;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

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

.logo i {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.logo h2 {
    font-size: 18px;
    margin: 0;
}

.nav-menu {
    padding: 20px 0;
}

.nav-section {
    padding: 10px 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 20px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

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

.nav-item i {
    margin-right: 12px;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: all 0.3s;
}

.topbar {
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 999;
}

.toggle-sidebar {
    display: none;
    cursor: pointer;
    font-size: 24px;
    color: var(--dark-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark-color);
}

.user-info i {
    font-size: 24px;
    color: var(--primary-color);
}

.content-wrapper {
    padding: 30px;
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.page-header h1 i {
    margin-right: 10px;
    color: var(--primary-color);
}

.page-header p {
    color: var(--secondary-color);
    font-size: 14px;
}

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

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
}

.stat-content h3 {
    font-size: 32px;
    margin: 0;
    color: var(--dark-color);
}

.stat-content p {
    margin: 0;
    color: var(--secondary-color);
    font-size: 14px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dashboard-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--light-color);
}

.card-header h2 {
    font-size: 18px;
    margin: 0;
    color: var(--dark-color);
}

.card-header h2 i {
    margin-right: 8px;
    color: var(--primary-color);
}

.card-body {
    padding: 20px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

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

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

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

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

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

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: var(--secondary-color);
    color: white;
}

.badge-success {
    background: var(--success-color);
}

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

.badge-warning {
    background: var(--warning-color);
}

.badge-info {
    background: var(--info-color);
}

.no-data {
    text-align: center;
    padding: 40px;
    color: var(--secondary-color);
}

/* Quick Actions */
.quick-actions {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.quick-actions h2 {
    margin-bottom: 20px;
    color: var(--dark-color);
}

.quick-actions h2 i {
    margin-right: 8px;
    color: var(--primary-color);
}

.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Card */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card-title {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-title h2 {
    margin: 0;
    font-size: 20px;
    color: var(--dark-color);
}

.card-content {
    padding: 20px;
}

/* Filter Form */
.filter-form {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

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

/* Attendance Grid */
.attendance-grid {
    display: grid;
    gap: 15px;
}

.student-attendance-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s;
}

.student-attendance-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.student-info {
    flex: 1;
}

.student-info h3 {
    margin: 0 0 5px 0;
    color: var(--dark-color);
    font-size: 16px;
}

.student-info p {
    margin: 0;
    color: var(--secondary-color);
    font-size: 13px;
}

.attendance-status {
    display: flex;
    gap: 10px;
}

.status-radio {
    display: none;
}

.status-label {
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid var(--border-color);
    background: white;
}

.status-radio:checked + .status-label {
    border-color: currentColor;
    color: white;
}

.status-radio:checked + .status-label.status-present {
    background: var(--success-color);
    border-color: var(--success-color);
}

.status-radio:checked + .status-label.status-absent {
    background: var(--danger-color);
    border-color: var(--danger-color);
}

.status-radio:checked + .status-label.status-late {
    background: var(--warning-color);
    border-color: var(--warning-color);
}

.status-radio:checked + .status-label.status-excused {
    background: var(--info-color);
    border-color: var(--info-color);
}

/* Bulk Actions */
.bulk-actions {
    background: var(--light-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

.bulk-actions span {
    font-weight: 500;
    color: var(--dark-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: auto;
}

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

.modal-header h2 {
    margin: 0;
    font-size: 20px;
}

.modal-close {
    font-size: 28px;
    cursor: pointer;
    color: var(--secondary-color);
}

.modal-close:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: 20px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .toggle-sidebar {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .bulk-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .attendance-status {
        flex-wrap: wrap;
    }
}

/* One-by-One Attendance Marking Interface */
.student-card-large {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.student-header {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 35px;
    padding: 25px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.student-avatar {
    flex-shrink: 0;
    animation: fadeInScale 0.5s ease;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.student-details {
    flex: 1;
}

.student-details h2 {
    font-size: 1.8rem;
    color: #1e293b;
    margin-bottom: 8px;
}

.student-details p {
    font-size: 1.1rem;
}

.attendance-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 25px 0;
    padding: 0;
}

.status-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px 12px;
    margin: 0;
    border: 3px solid;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-size: 0.95rem;
    font-weight: 600;
    min-height: 110px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.status-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.status-btn.active {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    animation: pulseButton 0.4s ease-in-out;
}

@keyframes pulseButton {
    0%, 100% { transform: translateY(-2px) scale(1.03); }
    50% { transform: translateY(-2px) scale(1.06); }
}

.status-btn i {
    font-size: 2.5rem;
    margin-bottom: 3px;
    transition: all 0.3s ease;
}

.status-btn:hover i {
    transform: scale(1.1) rotate(5deg);
}

.status-btn.active i {
    transform: scale(1.15);
}

.status-btn span {
    font-size: 1rem;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-top: 2px;
}

.status-btn kbd {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.98);
    padding: 5px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    border: 2px solid;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.status-btn-present {
    border-color: #22c55e;
    color: #22c55e;
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
}

.status-btn-present kbd {
    border-color: #22c55e;
    color: #22c55e;
}

.status-btn-present:hover {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    border-color: #16a34a;
}

.status-btn-present:hover kbd {
    background: white;
    border-color: white;
    color: #22c55e;
}

.status-btn-present.active {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    border-color: #16a34a;
}

.status-btn-present.active kbd {
    background: white;
    border-color: white;
    color: #22c55e;
}

.status-btn-absent {
    border-color: #ef4444;
    color: #ef4444;
    background: linear-gradient(135deg, #ffffff 0%, #fef2f2 100%);
}

.status-btn-absent kbd {
    border-color: #ef4444;
    color: #ef4444;
}

.status-btn-absent:hover {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border-color: #dc2626;
}

.status-btn-absent:hover kbd {
    background: white;
    border-color: white;
    color: #ef4444;
}

.status-btn-absent.active {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border-color: #dc2626;
}

.status-btn-absent.active kbd {
    background: white;
    border-color: white;
    color: #ef4444;
}

.status-btn-late {
    border-color: #f59e0b;
    color: #f59e0b;
    background: linear-gradient(135deg, #ffffff 0%, #fffbeb 100%);
}

.status-btn-late kbd {
    border-color: #f59e0b;
    color: #f59e0b;
}

.status-btn-late:hover {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border-color: #d97706;
}

.status-btn-late:hover kbd {
    background: white;
    border-color: white;
    color: #f59e0b;
}

.status-btn-late.active {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border-color: #d97706;
}

.status-btn-late.active kbd {
    background: white;
    border-color: white;
    color: #f59e0b;
}

.status-btn-excused {
    border-color: #3b82f6;
    color: #3b82f6;
    background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
}

.status-btn-excused kbd {
    border-color: #3b82f6;
    color: #3b82f6;
}

.status-btn-excused:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border-color: #2563eb;
}

.status-btn-excused:hover kbd {
    background: white;
    border-color: white;
    color: #3b82f6;
}

.status-btn-excused.active {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border-color: #2563eb;
}

.status-btn-excused.active kbd {
    background: white;
    border-color: white;
    color: #3b82f6;
}

.navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 30px 0;
}

.navigation-buttons .btn {
    flex: 1;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.navigation-buttons .btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.navigation-buttons .btn:active:not(:disabled) {
    transform: translateY(0);
}

.navigation-buttons .btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.progress-container {
    margin-top: 35px;
    padding: 20px;
    background: white;
    border-radius: 12px;
}

.progress-bar {
    width: 100%;
    height: 16px;
    background: #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #22c55e 0%, #10b981 50%, #059669 100%);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.attendance-summary {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
}

.attendance-summary h3 {
    margin-bottom: 15px;
    color: #1e293b;
    font-size: 1.15rem;
    font-weight: 700;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.summary-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: white;
    border-radius: 10px;
    border-left: 4px solid;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.summary-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}

.summary-item i {
    font-size: 1.5rem;
}

.summary-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

.summary-item strong {
    font-size: 1.1rem;
    font-weight: 700;
}

.summary-present {
    border-color: #22c55e;
    color: #22c55e;
}

.summary-absent {
    border-color: #ef4444;
    color: #ef4444;
}

.summary-late {
    border-color: #f59e0b;
    color: #f59e0b;
}

.summary-excused {
    border-color: #3b82f6;
    color: #3b82f6;
}

kbd {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: bold;
    border: 1px solid #cbd5e1;
    font-family: monospace;
}

/* Responsive adjustments for new interface */
@media (max-width: 992px) {
    .attendance-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .status-btn {
        padding: 18px 10px;
        min-height: 100px;
    }
    
    .status-btn i {
        font-size: 2.2rem;
    }
    
    .status-btn span {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .student-header {
        flex-direction: column;
        text-align: center;
    }
    
    .student-details h2 {
        font-size: 1.5rem;
    }
    
    .attendance-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        margin: 20px 0;
    }
    
    .status-btn {
        padding: 15px 8px;
        min-height: 90px;
    }
    
    .status-btn i {
        font-size: 2rem;
    }
    
    .status-btn span {
        font-size: 0.85rem;
    }
    
    .status-btn kbd {
        padding: 4px 7px;
        font-size: 0.7rem;
    }
    
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .summary-item {
        padding: 10px 12px;
    }
    
    .summary-item i {
        font-size: 1.3rem;
    }
    
    .summary-item span {
        font-size: 0.85rem;
    }
    
    .summary-item strong {
        font-size: 1rem;
    }
}

/* Print Styles */
/* Print Styles */
@media print {
    .sidebar,
    .topbar,
    .btn,
    .filter-form,
    .quick-actions {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 0;
    }
}