/* Conference Registration System Styles */

/* General Styles */
#conference-registration-container,
#conference-admin-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #007cba;
    outline: none;
    box-shadow: 0 0 5px rgba(0,124,186,0.3);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

.form-group label input[type="checkbox"] {
    display: inline;
    margin-right: 8px;
}

/* Button Styles */
button {
    background: #007cba;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-right: 10px;
}

button:hover {
    background: #005a87;
}

button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

button[type="button"] {
    background: #666;
}

button[type="button"]:hover {
    background: #444;
}

/* Message Styles */
.success-message {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border: 1px solid #c3e6cb;
    border-radius: 4px;
    margin: 10px 0;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin: 10px 0;
}

/* Admin Dashboard Styles */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
}

.dashboard-header h2 {
    margin: 0;
    color: #333;
}

.stats-container {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.stat-box {
    flex: 1;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #e9ecef;
}

.stat-box h3 {
    margin: 0 0 10px 0;
    color: #666;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-box span {
    font-size: 32px;
    font-weight: bold;
    color: #007cba;
}

.actions-container {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.actions-container button {
    margin-right: 10px;
    margin-bottom: 10px;
}

#download-excel {
    background: #28a745;
}

#download-excel:hover {
    background: #218838;
}

#refresh-data {
    background: #17a2b8;
}

#refresh-data:hover {
    background: #138496;
}

/* Table Styles */
.registrations-table-container {
    margin-top: 20px;
}

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

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

.registrations-table th {
    background: #f8f9fa;
    font-weight: bold;
    color: #333;
    position: sticky;
    top: 0;
}

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

.registrations-table-container {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* Responsive Design */
@media (max-width: 768px) {
    #conference-registration-container,
    #conference-admin-container {
        margin: 10px;
        padding: 15px;
    }
    
    .stats-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .actions-container button {
        width: 100%;
        margin-bottom: 10px;
        margin-right: 0;
    }
    
    .registrations-table {
        font-size: 14px;
    }
    
    .registrations-table th,
    .registrations-table td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    button {
        width: 100%;
        margin-bottom: 10px;
        margin-right: 0;
    }
    
    .registrations-table-container {
        font-size: 12px;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007cba;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Form Validation */
.form-group input:invalid,
.form-group textarea:invalid {
    border-color: #dc3545;
}

.form-group input:valid,
.form-group textarea:valid {
    border-color: #28a745;
}

/* Hidden Elements */
.hidden {
    display: none !important;
}

/* Print Styles */
@media print {
    #conference-admin-container .actions-container,
    #conference-admin-container .dashboard-header button {
        display: none;
    }
    
    .registrations-table-container {
        max-height: none;
        overflow: visible;
        border: none;
    }
}