.letter-donuts-wrapper {
    margin: 20px 0;
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.letter-donuts-title {
    margin: 0 0 16px;
    font-size: 1.1rem;
    font-weight: 600;
}

.letter-donuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
}

.letter-donuts-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 10px 6px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.letter-donuts-item:hover {
    border-color: #999;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.letter-label {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 8px;
    color: #333;
}

.letter-qty-control {
    display: flex;
    align-items: center;
    gap: 4px;
}

.letter-qty-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #f5f5f5;
    color: #333;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    line-height: 1;
    user-select: none;
}

.letter-qty-btn:hover {
    background: #e0e0e0;
    border-color: #999;
}

.letter-qty-btn:active {
    background: #d0d0d0;
}

.letter-qty-input {
    width: 44px;
    height: 30px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #333;
    -moz-appearance: textfield;
}

.letter-qty-input::-webkit-inner-spin-button,
.letter-qty-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.letter-qty-input:focus {
    outline: none;
    border-color: #66afe9;
    box-shadow: 0 0 4px rgba(102,175,233,0.4);
}

.letter-donuts-text-field {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #e0e0e0;
}

.letter-donuts-text-field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    color: #333;
}

.letter-donuts-text-input {
    display: block;
    width: 100%;
    max-width: 400px;
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    color: #333;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}

.letter-donuts-text-input:focus {
    outline: none;
    border-color: #66afe9;
    box-shadow: 0 0 4px rgba(102,175,233,0.4);
}

.letter-donuts-datetime {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.letter-donuts-datetime .letter-donuts-text-input {
    flex: 1;
    min-width: 140px;
}

.letter-donuts-date-picker,
.letter-donuts-time-picker {
    cursor: pointer !important;
    background-color: #fff !important;
}

.flatpickr-calendar {
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange {
    background: #333;
    border-color: #333;
}

.flatpickr-day.selected:hover,
.flatpickr-day.startRange:hover,
.flatpickr-day.endRange:hover {
    background: #555;
    border-color: #555;
}

.flatpickr-day.today {
    border-color: #333;
}

.flatpickr-day.today.selected {
    background: #333;
    border-color: #333;
}

.flatpickr-months .flatpickr-month,
.flatpickr-current-month .flatpickr-monthDropdown-months,
span.flatpickr-weekday {
    background: #333;
    color: #fff;
}

.flatpickr-current-month input.cur-year {
    color: #fff;
}

.flatpickr-months .flatpickr-prev-month svg,
.flatpickr-months .flatpickr-next-month svg {
    fill: #fff;
}

@media (max-width: 480px) {
    .letter-donuts-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }

    .letter-donuts-item {
        padding: 12px 6px;
    }

    .letter-label {
        font-size: 1.5rem;
    }

    .letter-qty-input {
        width: 50px;
        height: 38px;
        font-size: 1.1rem;
    }

    .letter-qty-btn {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
}