:root {
    --brand: #1f4e79;
    --brand-dark: #163a5a;
    --accent: #c0392b;
    --bg: #faf7f2;
    --card: #ffffff;
    --text: #222222;
    --muted: #666666;
    --border: #dddddd;
}

* {
    box-sizing: border-box;
}

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

header {
    background: var(--brand);
    color: #ffffff;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

header a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
}

header .cart-link {
    background: var(--accent);
    padding: 8px 14px;
    border-radius: 6px;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 16px;
}

h1 {
    font-size: 1.5rem;
    margin: 0 0 16px;
}

.items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card .name {
    font-weight: 600;
}

.card .description {
    color: var(--muted);
    font-size: 0.9rem;
    flex: 1;
}

.card .price {
    font-weight: 600;
    color: var(--brand);
}

button,
.button {
    background: var(--brand);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

button:hover,
.button:hover {
    background: var(--brand-dark);
}

button:disabled {
    background: #999999;
    cursor: default;
}

button.secondary,
.button.secondary {
    background: #ffffff;
    color: var(--brand);
    border: 1px solid var(--brand);
}

button.small {
    padding: 4px 10px;
    font-size: 0.9rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
}

th,
td {
    text-align: left;
    padding: 10px;
    border-bottom: 1px solid var(--border);
}

td.number,
th.number {
    text-align: right;
}

.qty {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qty input {
    width: 56px;
    padding: 6px;
    text-align: center;
    font-size: 1rem;
}

.totals {
    margin-top: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600;
}

.actions {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

form {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: grid;
    gap: 12px;
}

label {
    display: grid;
    gap: 4px;
    font-weight: 600;
}

input,
select {
    padding: 10px;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}

input.invalid,
select.invalid {
    border-color: var(--accent);
}

.error {
    color: var(--accent);
    font-weight: 600;
}

.message {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.busy {
    color: var(--muted);
    padding: 16px 0;
}

.hidden {
    display: none;
}

#checkout {
    margin-top: 16px;
}

.summary {
    margin-bottom: 16px;
}