/* Custom CSS for Student Management Application */

/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px 10px 0 0 !important;
    font-weight: bold;
}

/* Dashboard Cards */
.dashboard-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
}

.dashboard-card .card-icon {
    font-size: 3rem;
    opacity: 0.8;
}

.dashboard-card .card-number {
    font-size: 2.5rem;
    font-weight: bold;
}

.dashboard-card.violations {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
}

.dashboard-card.achievements {
    background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
}

.dashboard-card.students {
    background: linear-gradient(135deg, #45b7d1 0%, #96c93d 100%);
}

.dashboard-card.classes {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

/* Form Styles */
.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 25px;
    padding: 10px 30px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
    border: none;
    border-radius: 25px;
}

.btn-danger {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    border: none;
    border-radius: 25px;
}

.btn-warning {
    background: linear-gradient(135deg, #feca57 0%, #ff9ff3 100%);
    border: none;
    border-radius: 25px;
}

/* Table Styles */
.table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

.table thead th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: bold;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: 10px;
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
    color: white;
}

.alert-danger {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
}

.alert-warning {
    background: linear-gradient(135deg, #feca57 0%, #ff9ff3 100%);
    color: white;
}

.alert-info {
    background: linear-gradient(135deg, #45b7d1 0%, #96c93d 100%);
    color: white;
}

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

.login-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

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

.login-logo i {
    font-size: 4rem;
    color: #667eea;
    margin-bottom: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-card {
        margin-bottom: 15px;
    }
    
    .dashboard-card .card-number {
        font-size: 2rem;
    }
    
    .dashboard-card .card-icon {
        font-size: 2.5rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 8px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 10px;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .login-card {
        margin: 20px;
        padding: 30px 20px;
    }
}

/* Custom Utilities */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* DataTables Custom Styling */
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
    border-radius: 20px;
    border: 1px solid #ddd;
    padding: 5px 15px;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border: none !important;
    border-radius: 20px !important;
    color: white !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border: none !important;
    border-radius: 20px !important;
    color: white !important;
}