:root {
    --bg-color: #f4f4f4;
    --sidebar-bg: #ffffff;
    --text-primary: #111111;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #000000;
    --card-bg: #ffffff;
    --success-color: #008000;
    --warning-color: #ffa500;
    --danger-color: #ff0000;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
}

.logo {
    margin-bottom: 40px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

#categoryNav {
    flex: 1;
}

.nav-category {
    margin-bottom: 24px;
}

.nav-category-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 600;
}

.nav-item {
    display: block;
    padding: 8px 0;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-item:hover {
    color: var(--text-secondary);
    text-decoration: underline;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    padding: 24px 40px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
}

.search-container input {
    width: 100%;
    max-width: 600px;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 4px;
    outline: none;
}

.search-container input:focus {
    border-color: var(--accent-color);
}

#viewContainer {
    flex: 1;
    overflow-y: auto;
    padding: 40px;
}

/* Dashboard / Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 4px;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 16px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.status-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

.status-supported {
    background: #e6f4ea;
    color: var(--success-color);
}

.status-eol {
    background: #fce8e6;
    color: var(--danger-color);
}

.card-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Product Detail View */
.product-detail-header {
    margin-bottom: 40px;
}

.product-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.03em;
}

.product-meta {
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.version-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.version-table th,
.version-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.version-table th {
    background: #fafafa;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
}

.version-table tr:last-child td {
    border-bottom: none;
}

.support-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-active {
    background-color: var(--success-color);
}

.status-ending-soon {
    background-color: var(--warning-color);
}

.status-dead {
    background-color: var(--danger-color);
}

.loading,
.error {
    text-align: center;
    padding: 60px;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.error {
    color: var(--danger-color);
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        overflow: auto;
    }

    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-content {
        overflow: visible;
    }
}