.bk-wrapper {
    max-width: 420px;
    margin: auto;
    font-family: sans-serif;
}

.bk-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}

.bk-tabs button {
    flex: 1;
    padding: 8px;
    border: 0;
    background: #eee;
    cursor: pointer;
}

.bk-tabs .active {
    background: #1976d2;
    color: #fff;
}

.bk-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

#bk-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.bk-day {
    padding: 12px;
    text-align: center;
    border-radius: 6px;
    user-select: none;
}

.bk-day.free { background: #e8f5e9; }
.bk-day.booked { background: #ffcdd2; color: #b71c1c; font-weight: bold; }

.bk-day.arrival {
    background: linear-gradient(135deg,#e8f5e9 50%,#ffcdd2 50%);
}

.bk-day.departure {
    background: linear-gradient(135deg,#ffcdd2 50%,#e8f5e9 50%);
}

.bk-form {
    margin-top: 15px;
    display: grid;
    gap: 10px;
}

.bk-form input,
.bk-form button {
    padding: 10px;
    font-size: 16px;
}

#bk-price {
    padding: 10px;
    background: #f5f5f5;
    border-radius: 6px;
    text-align: center;
}