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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 40px 0;
    background-color: #fff;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5em;
    color: #2c3e50;
    margin-bottom: 10px;
}

header p {
    color: #7f8c8d;
    font-size: 1.1em;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
}

section {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5em;
}

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

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
}

.btn-primary {
    background-color: #3498db;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-small {
    padding: 5px 10px;
    font-size: 0.85em;
    margin-right: 5px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    background-color: #3498db;
    color: white;
}

.btn-small:hover {
    background-color: #2980b9;
}

.btn-danger {
    background-color: #e74c3c;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.message {
    padding: 15px;
    border-radius: 4px;
    margin-top: 20px;
}

.message.hidden {
    display: none;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#calendar {
    min-height: 400px;
}

.calendar-slot {
    padding: 10px;
    margin: 5px 0;
    background-color: #ecf0f1;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.calendar-slot:hover {
    background-color: #3498db;
    color: white;
}

.calendar-slot.selected {
    background-color: #2ecc71;
    color: white;
}

/* Admin styles */
.admin-section {
    grid-column: 1 / -1;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.filters {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 4px;
}

.filters label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filters select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

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

.badge {
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 0.85em;
    font-weight: 500;
}

.badge-scheduled {
    background-color: #3498db;
    color: white;
}

.badge-completed {
    background-color: #2ecc71;
    color: white;
}

.badge-cancelled {
    background-color: #e74c3c;
    color: white;
}