body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f7;
    color: #222;
}

header {
    background: #1f2933;
    color: #fff;
    padding: 1.5rem 2rem;
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

header p {
    margin: 0.25rem 0 0;
}

main {
    max-width: 1100px;
    margin: 1.5rem auto;
    padding: 0 1rem 2rem;
}

main.narrow {
    max-width: 700px;
}

.category h2 {
    margin-top: 2rem;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 0.25rem;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.product-card {
    background: #fff;
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.product-card h3 {
    margin-top: 0;
}

.button {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    text-decoration: none;
    border: 1px solid #1f2933;
    font-weight: 500;
    font-size: 0.95rem;
    background: #fff;
    color: #1f2933;
}

.button.primary {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}

.button:hover {
    opacity: 0.9;
}

footer {
    text-align: center;
    font-size: 0.85rem;
    padding: 1rem 0 2rem;
    color: #666;
}

.product-detail ul {
    padding-left: 1.2rem;
}

.price-table {
    border-collapse: collapse;
    margin-top: 0.75rem;
    width: 100%;
    max-width: 500px;
}

.price-table th,
.price-table td {
    border: 1px solid #ddd;
    padding: 0.4rem 0.5rem;
    text-align: left;
    font-size: 0.9rem;
}

.calendar-section {
    margin-top: 2rem;
}

#calendar {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.calendar-month {
    background: #fff;
    border-radius: 0.75rem;
    padding: 0.5rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    min-width: 260px;
}

.calendar-month h3 {
    text-align: center;
    margin: 0.25rem 0 0.5rem;
    font-size: 1rem;
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.calendar-table th,
.calendar-table td {
    border: 1px solid #eee;
    text-align: center;
    padding: 0.2rem;
    width: 14.28%;
}

.calendar-table td.free {
    background: #e0f7e9;
}

.calendar-table td.booked {
    background: #fed7d7;
    text-decoration: line-through;
}

.calendar-table td.past {
    background: #f1f1f1;
    color: #999;
}

.calendar-legend {
    margin-top: 0.5rem;
    font-size: 0.8rem;
}

.legend-box {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    margin-right: 0.25rem;
    border: 1px solid #ccc;
    vertical-align: middle;
}

.legend-box.free {
    background: #e0f7e9;
}

.legend-box.booked {
    background: #fed7d7;
}

.legend-box.past {
    background: #f1f1f1;
}

.booking-form {
    background: #fff;
    border-radius: 0.75rem;
    padding: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    max-width: 500px;
    margin-top: 1rem;
}

.form-row {
    margin-bottom: 0.75rem;
}

.form-row label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.form-row input[type="text"],
.form-row input[type="email"],
.form-row input[type="date"] {
    width: 100%;
    padding: 0.4rem 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid #ccc;
    font-size: 0.9rem;
    box-sizing: border-box;
}

.hint {
    font-size: 0.85rem;
    color: #555;
}

@media (max-width: 700px) {
    header {
        padding: 1rem;
    }

    main {
        padding: 0 0.5rem 1.5rem;
    }
}