:root {
    --primary-color: #2196F3;
    --secondary-color: #1976D2;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --text-color: #333;
    --background-color: #f5f5f5;
    --card-background: #ffffff;
    --border-radius: 8px;
    --spacing: 20px;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

header {
    text-align: center;
    margin-bottom: 40px;
    background-color: var(--card-background);
    padding: var(--spacing);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-family: 'Google Sans', sans-serif;
    font-size: 36px;
    color: #202124;
    margin-bottom: 10px;
}

header p {
    color: #5f6368;
    font-size: 18px;
}

.logo {
    max-height: 80px;
    margin: 20px auto;
    display: block;
}

.subtitle {
    text-align: center;
    color: #5f6368;
    margin-bottom: 30px;
}

.search-bar {
    margin-bottom: 30px;
}

.search-bar input {
    width: 100%;
    padding: 12px 20px;
    font-size: 16px;
    border: 1px solid #dadce0;
    border-radius: 24px;
    outline: none;
    transition: all 0.2s ease;
}

.search-bar input:focus {
    border-color: #1a73e8;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
}

nav {
    background-color: var(--card-background);
    padding: var(--spacing);
    margin-bottom: var(--spacing);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.category-filters, .status-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

button {
    padding: 8px 16px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #e0e0e0;
}

button.active {
    background-color: var(--primary-color);
    color: white;
}

.status-btn.working {
    background-color: var(--success-color);
    color: white;
}

.status-btn.experimental {
    background-color: var(--warning-color);
}

.status-btn.theoretical {
    background-color: var(--danger-color);
    color: white;
}

.helpers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.helper-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    transition: box-shadow 0.2s ease;
    position: relative;
}

.helper-card:hover {
    box-shadow: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
}

.helper-title {
    color: #1a73e8;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 4px;
    font-family: 'Google Sans', sans-serif;
    text-decoration: none;
    cursor: pointer;
}

.helper-title:hover {
    text-decoration: underline;
}

.helper-status {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 12px;
}

.helper-status.working {
    background: #e6f4ea;
    color: #137333;
}

.helper-status.experimental {
    background: #fce8e6;
    color: #c5221f;
}

.helper-status.theoretical {
    background: #e8f0fe;
    color: #1967d2;
}

.helper-description {
    color: #5f6368;
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.5;
}

.helper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 16px;
}

.helper-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    background: #f1f3f4;
    color: #5f6368;
}

.helper-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.helper-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    gap: 16px;
}

.helper-buttons-column {
    display: flex;
    flex-direction: column;
    width: 48%;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 24px;
    height: 36px;
    color: white;
    text-decoration: none;
    border-radius: 18px;
    font-family: 'Google Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    margin: 8px;
    min-width: 150px;
    justify-content: center;
}

.download-btn:hover {
    box-shadow: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
}

.download-btn .material-icons {
    font-size: 18px;
}

.download-btn.csharp {
    background-color: #1a73e8;
}

.download-btn.csharp:hover {
    background-color: #1557b0;
}

.download-btn.vbnet {
    background-color: #1a73e8;
}

.download-btn.vbnet:hover {
    background-color: #1557b0;
}

.doc-link {
    display: inline-block;
    padding: 8px 16px;
    color: #1a73e8;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    transition: color 0.2s ease;
}

.doc-link:hover {
    color: #1557b0;
    text-decoration: underline;
}

.disclaimer {
    font-size: 0.9em;
    color: #666;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    background-color: #f9f9f9;
    text-align: left;
}

.disclaimer h3 {
    margin-bottom: 15px;
    color: #333;
}

.disclaimer p, .disclaimer ol {
    margin: 10px 0;
    line-height: 1.5;
    text-align: left;
}

.disclaimer ol {
    padding-left: 20px;
    list-style-position: outside;
}

.disclaimer li {
    margin: 5px 0;
    text-align: left;
}

footer {
    text-align: center;
    padding: var(--spacing);
    background-color: var(--card-background);
    margin-top: var(--spacing);
}

.footer-logo {
    height: 20px;
    width: auto;
    margin: 10px 0;
    opacity: 0.8;
}

.branding {
    text-align: center;
    margin-top: 20px;
}

@media (max-width: 768px) {
    .helpers-grid {
        grid-template-columns: 1fr;
    }
    
    .category-filters, .status-filters {
        flex-direction: column;
    }
    
    button {
        width: 100%;
    }
}