:root {
    --bg: #f8fafc;
    --panel: #ffffff;
    --line: #cbd5e1;
    --primary: #0f766e;
    --text: #172033;
    --muted: #64748b;
    --busy: #be123c;
}

* {
    box-sizing: border-box;
}

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

.page {
    width: min(1040px, calc(100% - 32px));
    margin: 32px auto;
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 20px;
}

.panel,
.seat,
.stats article {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
}

.panel {
    padding: 22px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
}

h1,
p {
    margin-top: 0;
}

label {
    display: block;
    margin: 14px 0 6px;
    font-weight: 700;
}

input,
select,
button {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 11px 12px;
    font: inherit;
}

button {
    margin-top: 16px;
    border: 0;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    cursor: pointer;
}

.split,
.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.stats {
    margin-bottom: 18px;
}

.stats article {
    padding: 14px;
}

.stats span {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.message {
    color: var(--muted);
}

.seat-map {
    display: grid;
    grid-template-columns: repeat(5, minmax(82px, 1fr));
    gap: 12px;
}

.seat {
    min-height: 92px;
    padding: 12px;
    text-align: left;
}

.seat strong {
    display: block;
    margin-bottom: 8px;
}

.seat small {
    display: block;
    color: var(--muted);
}

.seat.occupied {
    border-color: #fecdd3;
    background: #fff1f2;
}

.seat.occupied strong {
    color: var(--busy);
}

.seat button {
    margin-top: 10px;
    padding: 8px;
    background: var(--busy);
}

@media (max-width: 820px) {
    .page {
        grid-template-columns: 1fr;
    }

    .seat-map {
        grid-template-columns: repeat(2, 1fr);
    }
}