body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

.container {
    width: 95%;
    max-width: 1200px;
    margin: 0 auto;
}

.site-header, .site-footer {
    background-color: #111827;
    color: #f9fafb;
    padding: 10px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo a {
    color: #f9fafb;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.2rem;
}

.main-nav a {
    color: #e5e7eb;
    margin-right: 10px;
    text-decoration: none;
}

.user-actions a, .user-actions button {
    margin-left: 5px;
}

.site-main {
    background-color: #ffffff;
    padding: 1rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
    border-radius: 8px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
}

.product-card {
    background-color: #fff;
    border-radius: 6px;
    padding: 0.5rem;
    border: 1px solid #e5e7eb;
}

.product-card img {
    max-width: 100%;
}

.product-card .price {
    font-weight: 600;
    color: #2563eb;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 0.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.btn-primary, button {
    background-color: #2563eb;
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

.btn-primary {
    text-decoration: none;
    display: inline-block;
}

.alert-success {
    padding: 0.5rem;
    background-color: #bbf7d0;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}