:root {
    --primary-color: #0066cc;
    --secondary-color: #00a651;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(.25,.8,.25,1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex: 1;
}

header {
    background-color: var(--card-background);
    padding: 2rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

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

.language-selector {
    position: absolute;
    top: 20px;
    right: 20px;
}

#languageSelect {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-background);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

#languageSelect:hover {
    border-color: var(--primary-color);
}

main {
    padding: 3rem 0;
}

.search-section {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

#searchInput {
    flex: 1;
    padding: 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.primary-button {
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.primary-button:hover {
    background-color: #0052a3;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.popular-features {
    margin-bottom: 3rem;
    text-align: center;
}

.popular-features h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #e9ecef;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.results-section {
    min-height: 200px;
    margin-bottom: 3rem;
}

.loading {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    padding: 2rem;
}

.no-results {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    padding: 2rem;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.result-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.result-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    text-transform: capitalize;
}

.detection-result, .compatibility-info {
    margin-bottom: 2rem;
}

.detection-result h4, .compatibility-info h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.current-browser {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
}

.status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.status.supported {
    background-color: var(--secondary-color);
    color: white;
}

.status.not-supported {
    background-color: var(--danger-color);
    color: white;
}

.status.partial {
    background-color: var(--warning-color);
    color: #212529;
}

.browser-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.browser-item {
    padding: 1.5rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.browser-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.browser-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.browser-version {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.browser-status {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    display: inline-block;
}

.browser-status.supported {
    background-color: rgba(0, 166, 81, 0.1);
    color: var(--secondary-color);
}

.browser-status.not-supported {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.browser-status.partial {
    background-color: rgba(255, 193, 7, 0.1);
    color: #856404;
}

.info-section {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 3rem;
}

.info-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.info-section ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.info-section li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

footer {
    background-color: var(--card-background);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .search-section {
        flex-direction: column;
    }
    
    .language-selector {
        position: static;
        margin-top: 1rem;
    }
    
    .browser-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
}