:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.domain {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
}

.card h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.description {
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.6;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.puzzle-group {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.puzzle-container {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 10px;
}

.puzzle-question {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.puzzle-container input {
    flex: 0 0 150px;
    margin-bottom: 0;
}

.btn-refresh {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.btn-refresh:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-primary {
    width: 100%;
    padding: 14px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loading-spinner {
    text-align: center;
    padding: 40px;
}

.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.results-card {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section {
    margin-bottom: 30px;
}

.result-section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.info-grid {
    display: grid;
    gap: 12px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 6px;
}

.info-item .label {
    font-weight: 600;
    color: var(--text-secondary);
}

.info-item .value {
    font-weight: 500;
}

.info-item .value.success {
    color: var(--success-color);
}

.info-item .value.warning {
    color: var(--warning-color);
}

.info-item .value.error {
    color: var(--error-color);
}

.recommendations-list {
    list-style: none;
    padding: 0;
}

.recommendations-list li {
    padding: 10px 15px;
    margin-bottom: 8px;
    background: var(--bg-color);
    border-radius: 6px;
    border-left: 4px solid var(--primary-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.tool-card {
    padding: 15px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.tool-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.tool-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.endpoints-list {
    display: grid;
    gap: 10px;
}

.endpoint-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--bg-color);
    border-radius: 6px;
}

.endpoint-path {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    font-weight: 600;
}

.endpoint-status {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 4px;
}

.endpoint-status.success {
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.endpoint-status.error {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

footer {
    text-align: center;
    padding: 40px 20px 30px;
    margin-top: 60px;
    border-top: 2px solid var(--border-color);
    background: var(--bg-color);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-stats {
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 25px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 8px;
    display: inline-block;
}

.footer-mcp-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.footer-creator {
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.footer-disclaimer {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    padding: 15px 20px;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 20px;
}

.footer-disclaimer strong {
    color: var(--text-color);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    text-decoration: underline;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.3);
    max-width: 500px;
    width: 90%;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content h2 {
    margin-bottom: 10px;
    color: var(--text-color);
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.modal-content .puzzle-container {
    margin-bottom: 20px;
}

.modal-content .puzzle-container input {
    font-size: 1.2rem;
    padding: 14px 18px;
    text-align: center;
    font-weight: 600;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.btn-secondary {
    padding: 10px 20px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
    background: var(--card-bg);
}

.modal .btn-primary {
    width: auto;
    padding: 10px 20px;
    font-size: 1rem;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 20px;
    }

    .puzzle-container {
        flex-direction: column;
        align-items: stretch;
    }

    .puzzle-container input {
        flex: 1;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .endpoint-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}