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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

header h1 {
    font-size: 2.5em;
    color: #667eea;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    font-size: 1.1em;
}

.api-key-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.api-key-section label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
}

.toggle-btn {
    padding: 12px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.toggle-btn:hover {
    background: #5568d3;
}

.api-key-section small {
    display: block;
    margin-top: 8px;
    color: #666;
    font-size: 0.9em;
}

.status-message {
    padding: 14px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    display: none;
    font-weight: 500;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(-10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.status-message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
    display: block;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
    flex-wrap: wrap;
}

.tab-button {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s;
}

.tab-button:hover {
    color: #667eea;
    background: #f8f9fa;
}

.tab-button.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-content h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 1.8em;
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group input[type="text"],
.form-group input[type="number"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-group label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.pattern-list {
    margin-bottom: 10px;
}

.pattern-item {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.pattern-input {
    flex: 1;
}

.remove-btn {
    padding: 12px 20px;
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    transition: background 0.3s;
    min-width: 45px;
}

.remove-btn:hover {
    background: #c82333;
}

.add-pattern-btn {
    padding: 10px 20px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.3s;
}

.add-pattern-btn:hover {
    background: #218838;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid #f0f0f0;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
    flex: 1;
    min-width: 150px;
}

.btn-primary:hover:not(:disabled) {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn.loading {
    position: relative;
}

.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

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

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 20px;
}

.close:hover {
    color: #000;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #667eea;
}

#previewContent {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Pattern Helper Styles */
.pattern-helper-section {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.pattern-input-mode {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.pattern-input-mode label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: normal;
}

.pattern-input-mode input[type="radio"] {
    margin: 0;
    width: auto;
}

.pattern-library-selector {
    display: flex;
    gap: 10px;
    align-items: center;
}

.pattern-library-dropdown {
    flex: 1;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.pattern-library-dropdown:focus {
    outline: none;
    border-color: #667eea;
}

.btn-add-from-library {
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s;
}

.btn-add-from-library:hover {
    background: #5568d3;
}

.pattern-item {
    position: relative;
}

.convert-btn, .test-btn {
    padding: 8px 12px;
    background: #17a2b8;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
    min-width: 40px;
}

.convert-btn:hover {
    background: #138496;
}

.test-btn {
    background: #ffc107;
    color: #333;
}

.test-btn:hover {
    background: #e0a800;
}

.pattern-suggestion {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid #667eea;
    border-radius: 6px;
    padding: 15px;
    margin-top: 5px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.suggestion-content {
    font-size: 13px;
}

.suggestion-content code {
    background: #f8f9fa;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    display: block;
    margin: 8px 0;
    word-break: break-all;
}

.btn-accept-suggestion, .btn-dismiss-suggestion {
    padding: 6px 12px;
    margin: 5px 5px 0 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.3s;
}

.btn-accept-suggestion {
    background: #28a745;
    color: white;
}

.btn-accept-suggestion:hover {
    background: #218838;
}

.btn-dismiss-suggestion {
    background: #6c757d;
    color: white;
}

.btn-dismiss-suggestion:hover {
    background: #5a6268;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    header h1 {
        font-size: 2em;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-button {
        width: 100%;
        text-align: left;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
    
    .pattern-input-mode {
        flex-direction: column;
        gap: 10px;
    }
    
    .pattern-library-selector {
        flex-direction: column;
    }
    
    .pattern-item {
        flex-wrap: wrap;
    }
    
    .convert-btn, .test-btn {
        flex: 1;
        min-width: auto;
    }
}