:root {
    --color-primary: #4f46e5;
    --color-text: #1f2937;
    --color-bg: #f9fafb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-header {
    padding: 1.25rem 0;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
    text-decoration: none;
}

.hero {
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.site-footer {
    padding: 2rem 0;
    text-align: center;
    color: #6b7280;
    font-size: 0.875rem;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav nav a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.95rem;
}

.inline-form {
    display: inline;
}

.link-button {
    background: none;
    border: none;
    padding: 0;
    color: var(--color-text);
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin: 1.5rem 0 0;
    font-size: 0.9rem;
}

.flash-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.flash-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
}

.field-errors {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.field-errors ul {
    margin: 0;
    padding-left: 1.1rem;
}

.catalog-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.5rem;
}

.catalog-list li {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 0.75rem 1rem;
}

.catalog-list .muted {
    display: block;
    color: #6b7280;
    font-size: 0.8rem;
}

.did-group-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.did-group-card h2 {
    margin: 0 0 0.25rem;
    font-size: 1.1rem;
}

.sku-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

.sku-table td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid #f3f4f6;
}

.sku-table thead td {
    font-weight: 600;
    color: #6b7280;
    font-size: 0.8rem;
}

.nav nav a i,
.nav nav button i {
    margin-right: 0.35em;
}