:root {
    --primary-color: #800000;
    --secondary-color: #f8f9fa;
    --accent-color: #d4af37;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #6c757d;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-gray);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    margin-right: 10px;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* Main Content */
.main-content {
    padding: 30px 0;
    min-height: calc(100vh - 160px);
}

.page-title {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 15px;
}

.page-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--primary-color);
}

/* Filter Section */
.filter-section {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.filter-group select, .filter-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    background-color: white;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
    text-decoration: none;
    text-align: center;
}

.btn:hover {
    background-color: #660000;
    color: white;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-success {
    background-color: #28a745;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

/* Schedule Cards */
.schedule-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.schedule-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.card-header {
    background-color: var(--primary-color);
    color: white;
    padding: 15px;
}

.card-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.card-body {
    padding: 15px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.card-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
}

.status-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-active {
    background-color: #d4edda;
    color: #155724;
}

.status-inactive {
    background-color: #f8d7da;
    color: #721c24;
}

/* Admin Panel Styles */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--primary-color);
    color: white;
    padding: 20px 0;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 1.2rem;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: block;
    padding: 10px 20px;
    color: white;
    text-decoration: none;
    transition: background-color 0.3s;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background-color: rgba(255,255,255,0.1);
}

.admin-content {
    flex: 1;
    padding: 20px;
    background-color: var(--light-gray);
}

.admin-card {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

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

.admin-table th, .admin-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--medium-gray);
}

.admin-table th {
    background-color: var(--light-gray);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 5px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
}

/* Login Form */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--light-gray);
}

.login-form {
    width: 100%;
    max-width: 400px;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.login-form h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* PDF Viewer */
.pdf-viewer {
    width: 100%;
    height: 600px;
    border: 1px solid var(--medium-gray);
    border-radius: 8px;
}

/* Footer */
footer {
    background-color: white;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid var(--medium-gray);
    color: var(--dark-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 15px;
        justify-content: center;
    }
    
    .filter-row {
        flex-direction: column;
    }
    
    .admin-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .schedule-cards {
        grid-template-columns: 1fr;
    }
    
    .admin-table {
        display: block;
        overflow-x: auto;
    }
/* Loading Styles */
.loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #800000;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 2s linear infinite;
    margin: 0 auto 20px;
}

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

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: #666;
    background: #f8f9fa;
    border-radius: 8px;
    margin: 20px 0;
}

.results-count {
    margin: 15px 0;
    color: #800000;
    font-style: italic;
    font-weight: 500;
}

/* Filter Section Improvements */
.filter-section {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    position: sticky;
    top: 80px;
    z-index: 90;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 10px;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.filter-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    background-color: white;
    font-size: 14px;
    transition: all 0.3s ease;
}

.filter-group select:focus {
    border-color: #800000;
    outline: none;
    box-shadow: 0 0 0 3px rgba(128, 0, 0, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .filter-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .filter-section {
        position: static;
    }
}