/* Configuration Page Styles */
.config-page {
    background: #f5f6fa;
    min-height: 100vh;
}

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

.config-header {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.config-header h1 {
    color: var(--text-dark);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.config-header i {
    color: var(--primary-color);
}

.config-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.config-content {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.config-section {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.config-section:last-child {
    border-bottom: none;
}

.config-section h2 {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
}

.config-section i {
    color: var(--primary-color);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.form-group small {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-group small a {
    color: var(--primary-color);
    text-decoration: underline;
}

.form-group small a:hover {
    color: #1e3d6f;
}

/* Color Input */
.color-input {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.color-input input[type="color"] {
    width: 50px;
    height: 40px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    padding: 0;
}

.color-input input[type="text"] {
    flex: 1;
}

/* File Upload */
.file-upload {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    background: var(--light-gray);
    color: var(--text-light);
    font-weight: 500;
}

.file-upload-label:hover {
    border-color: var(--primary-color);
    background: rgba(44, 90, 160, 0.05);
    color: var(--primary-color);
}

.file-upload-label i {
    font-size: 1.5rem;
}

.image-preview {
    display: none;
    max-width: 200px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.image-preview.show {
    display: block;
}

/* Preview Modal */
.preview-modal {
    max-width: 90vw;
    max-height: 90vh;
    width: 1200px;
    height: 800px;
    padding: 0;
    overflow: hidden;
}

.modal-header {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.modal-header .close {
    color: var(--white);
    position: static;
    font-size: 1.5rem;
}

.modal-body {
    flex: 1;
    padding: 0;
    height: calc(100% - 120px);
}

.modal-body iframe {
    border: none;
    width: 100%;
    height: 100%;
}

.modal-footer {
    padding: 1rem 2rem;
    background: var(--light-gray);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    border-top: 1px solid var(--border-color);
}

/* Validation indicators */
.validation-indicator {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    font-weight: 500;
    pointer-events: none;
}

.validation-indicator.valid {
    color: var(--success-color);
}

.validation-indicator.invalid {
    color: #e74c3c;
}

.form-group {
    position: relative;
}

input.invalid,
textarea.invalid,
select.invalid {
    border-color: #e74c3c !important;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.1) !important;
}

/* Color preview */
.color-preview {
    display: inline-block;
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 2px solid #ddd;
    margin-left: 10px;
    vertical-align: middle;
    font-size: 0.8rem;
    text-align: center;
    line-height: 26px;
    color: white;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
}

/* Features management */
.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.feature-item input {
    flex: 1;
}

.remove-feature {
    background: #e74c3c;
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.remove-feature:hover {
    background: #c0392b;
}

#addFeature {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: background 0.3s ease;
}

#addFeature:hover {
    background: #229954;
}

/* Last modified display */
#lastModified {
    font-size: 0.9rem;
    color: #666;
    text-align: center;
    margin-bottom: 1rem;
    font-style: italic;
}

/* Export/Import buttons */
.export-import-section {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    text-align: center;
}

.export-import-section h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.export-import-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

#exportConfig,
#importConfig {
    background: #3498db;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s ease;
    font-size: 0.9rem;
}

#exportConfig:hover,
#importConfig:hover {
    background: #2980b9;
}

/* Auto-save indicator */
.auto-save-indicator {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: #f39c12;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.auto-save-indicator.show {
    opacity: 1;
}

/* Success Message */
.success-message,
.config-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    display: none;
    align-items: center;
    gap: 0.5rem;
    z-index: 2000;
    animation: slideInRight 0.3s ease;
}

.config-message.error {
    background: #e74c3c;
}

.config-message.warning {
    background: #f39c12;
}

.success-message.show,
.config-message.show {
    display: flex;
}

.success-message i,
.config-message i {
    font-size: 1.2rem;
}

.close-message {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    margin-left: auto;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.close-message:hover {
    opacity: 1;
}

/* Loading States */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    color: var(--white);
}

/* Animations */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Responsive Design for Config Page */
@media (max-width: 768px) {
    .config-container {
        padding: 10px;
    }
    
    .config-header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .config-actions {
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .config-section {
        padding: 1.5rem;
    }
    
    .preview-modal {
        width: 95vw;
        height: 95vh;
        margin: 2.5vh auto;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .color-input {
        flex-direction: column;
        align-items: stretch;
    }
    
    .success-message {
        position: fixed;
        top: 10px;
        left: 10px;
        right: 10px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .config-header h1 {
        font-size: 1.5rem;
    }
    
    .config-section h2 {
        font-size: 1.3rem;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .file-upload-label {
        padding: 1.5rem;
        font-size: 0.9rem;
    }
}