/* assets/css/style.css */

:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --success-color: #4cc9f0;
    --danger-color: #f72585;
    --warning-color: #f8961e;
    --info-color: #4895ef;
    --dark-color: #1e1e2f;
    --light-color: #f8f9fa;
    --sidebar-width: 280px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f4f7fc;
    color: #333;
}

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

.login-page::before {
    content: '';
    position: absolute;
    width: 2000px;
    height: 2000px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.05) 100%);
    top: -1000px;
    right: -500px;
    transform: rotate(45deg);
}

.login-page::after {
    content: '';
    position: absolute;
    width: 1500px;
    height: 1500px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.02) 100%);
    bottom: -750px;
    left: -300px;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h2 {
    color: #333;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.login-header i {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

.form-group .input-icon {
    position: absolute;
    left: 15px;
    top: 42px;
    color: #999;
}

.form-control {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #e1e5ee;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s;
    background: white;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.15);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(67, 97, 238, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

/* Dashboard Layout */
.wrapper {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--dark-color) 0%, #2a2a40 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s;
    z-index: 1000;
    box-shadow: 5px 0 25px rgba(0, 0, 0, 0.1);
}

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

.sidebar-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin: 15px 0 5px;
}

.sidebar-header p {
    font-size: 14px;
    opacity: 0.7;
}

.sidebar-header i {
    font-size: 50px;
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 20px;
}

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

.menu-item {
    padding: 12px 25px;
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s;
    margin: 5px 15px;
    border-radius: 12px;
}

.menu-item:hover, .menu-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.menu-item i {
    width: 30px;
    font-size: 20px;
    margin-right: 15px;
}

.menu-item span {
    font-size: 15px;
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    background: #f4f7fc;
    min-height: 100vh;
}

/* Top Navigation */
.top-nav {
    background: white;
    border-radius: 20px;
    padding: 15px 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.02);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
}

/* Cards */
.card {
    background: white;
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.02);
    border: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f2f5;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 20px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.02);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: #333;
    margin-bottom: 5px;
}

.stat-info p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

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

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

.table th {
    text-align: left;
    padding: 15px 10px;
    background: #f8fafd;
    color: #555;
    font-weight: 600;
    font-size: 14px;
    border-bottom: 2px solid #e0e7ff;
}

.table td {
    padding: 15px 10px;
    border-bottom: 1px solid #edf2f7;
    color: #4a5568;
}

.table tbody tr:hover {
    background: #f8fafd;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 500;
    display: inline-block;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(67, 97, 238, 0.3);
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-info {
    background: #3b82f6;
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

/* Forms */
.form-control, .form-select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 14px;
    transition: all 0.3s;
    background: white;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.15);
}

.form-label {
    font-weight: 500;
    color: #4a5568;
    margin-bottom: 8px;
    display: block;
}

/* Upload Area */
.upload-area {
    border: 3px dashed #e2e8f0;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    background: #f8fafd;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: #f0f4ff;
}

.upload-area i {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-area h4 {
    color: #333;
    margin-bottom: 10px;
}

.upload-area p {
    color: #666;
    font-size: 14px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 30px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
}

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

.modal-header {
    padding: 25px 30px;
    border-bottom: 2px solid #f0f2f5;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
    transition: color 0.3s;
}

.modal-close:hover {
    color: #333;
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 2px solid #f0f2f5;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 5px solid #28a745;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-left: 5px solid #dc3545;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 5px solid #ffc107;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left: 5px solid #17a2b8;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        margin-left: -280px;
    }
    
    .sidebar.active {
        margin-left: 0;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-content.active {
        margin-left: 280px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .login-container {
        margin: 20px;
        padding: 30px;
    }
}

/* Attendance Summary */
.attendance-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.summary-item {
    background: #f8fafd;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
}

.summary-item .value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.summary-item .label {
    color: #666;
    font-size: 14px;
}

/* Progress Bar */
.progress {
    height: 8px;
    background: #edf2f7;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 0.3s;
}

/* Tooltip */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: #333;
    color: white;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1000;
}

[data-tooltip]:hover:before {
    opacity: 1;
    visibility: visible;
    bottom: 120%;
}

/* Print Styles */
@media print {
    .sidebar, .top-nav, .btn, .modal {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 20px;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}