/* Custom Styles for School Website */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.1), rgba(0, 123, 255, 0.05));
    padding-top: 80px;
}

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

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Buttons */
.btn {
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

/* Section Padding */
section {
    padding: 80px 0;
}

/* Background Colors */
.bg-light {
    background-color: #f8f9fa !important;
}

/* Sidebar */
.sidebar {
    border-right: 1px solid #dee2e6;
}

.sidebar .nav-link {
    color: #495057;
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

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

.table thead th {
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

/* Modals */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.modal-header {
    background-color: var(--primary-color);
    color: white;
    border-radius: 15px 15px 0 0;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* Forms */
.form-control,
.form-select {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Alerts */
.alert {
    border-radius: 10px;
    border: none;
}

/* Footer */
footer {
    background-color: var(--dark-color) !important;
}

footer a {
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-color) !important;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .sidebar {
        display: none;
    }
    
    .col-md-10 {
        width: 100%;
    }
}

/* Loading Spinner */
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 2s linear infinite;
    margin: 20px auto;
}

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

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}