:root {
    --blue: #0080ff;
    --red: #f2523d;
    --white: #ffffff;
    --black: #111111;
}

body {
    font-family: "Courier New", monospace;
}

.vcb-wrapper {
    max-width: 480px;
    margin: 0 auto;
    padding: 20px;
}

.vcb-header h1 {
    font-size: 32px;
    line-height: 1;
    margin-bottom: 32px;
}

.vcb-section {
    margin-bottom: 28px;
}

.vcb-section label {
    display: block;
    margin-bottom: 12px;
    font-size: 14px;
    text-transform: uppercase;
}

#vcb-date {
    width: 100%;
    height: 56px;
    border: 2px solid var(--blue);
    border-radius: 16px;
    padding: 0 16px;
    font-size: 18px;
}

.vcb-courts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.vcb-court,
.vcb-slot {
    border: none;
    border-radius: 18px;
    min-height: 56px;
    background: #f4f4f4;
    font-size: 18px;
    transition: 0.2s ease;
    font-family: "Courier New", monospace;
}

.vcb-court.active,
.vcb-slot.selected {
    background: var(--blue);
    color: white;
}

.vcb-slot.booked {
    background: var(--red);
    color: white;
    opacity: 0.6;
}

#vcb-slots {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.vcb-footer {
    position: sticky;
    bottom: 20px;
    background: white;
    border-radius: 24px;
    padding: 18px;
}