/* ===== ЦЕНЫ: ФАКТОРЫ И КАЛЬКУЛЯТОР (ГЛОБАЛЬНЫЕ СТИЛИ) ===== */
.factors {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
    margin-bottom: calc(var(--gap) * 2);
}

.factor {
    padding: clamp(16px, 2vw, 24px);
    border: 1px solid var(--line);
    border-left: 3px solid var(--purple-2);
    border-radius: var(--radius-sm);
    background: var(--bg-700);
}

.factor h3 {
    font-family: var(--ff-head);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.factor p {
    font-size: 13.5px;
    color: var(--text-2);
    line-height: 1.55;
}

.calc {
    background: var(--bg-700);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: clamp(24px, 4vw, 40px);
}

.calc__head {
    margin-bottom: calc(var(--gap) * 0.8);
}

.calc__title {
    font-family: var(--ff-head);
    font-size: clamp(20px, 2.5vw, 26px);
    font-weight: 800;
}

.calc__note {
    color: var(--text-2);
    font-size: 13.5px;
    margin-top: 8px;
    max-width: 560px;
}

.calc__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--gap) * 0.6);
}

.calc__result {
    margin-top: calc(var(--gap) * 0.8);
    padding-top: calc(var(--gap) * 0.8);
    border-top: 1px dashed var(--line);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
}

.calc__summary {
    flex: 1 1 260px;
    color: var(--text-2);
    font-size: 14px;
}

.calc__price {
    font-family: var(--ff-num);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 700;
    color: var(--purple-2);
}

/* ===== КАЛЬКУЛЯТОР: ПОЛЕ ВВОДА ОБЪЁМА (ГЛОБАЛЬНО) ===== */
.calc__range-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
}

.calc__range {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-800);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    accent-color: var(--purple-2);
}

.calc__range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--purple-2);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
    transition: transform 0.2s;
}

.calc__range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.calc__range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--purple-2);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
}

.calc__volume-input {
    width: 100px;
    padding: 12px 16px;
    background: #1a1a2e;
    /* Тёмный фон для контраста */
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: #ffffff !important;
    /* Белый текст (гарантированно виден) */
    font-family: var(--ff-body);
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.calc__volume-input:focus {
    outline: none;
    border-color: var(--purple-2);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

/* Убираем стрелочки у input type="number" */
.calc__volume-input::-webkit-inner-spin-button,
.calc__volume-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.calc__volume-input[type="number"] {
    -moz-appearance: textfield;
}

/* ===== АДАПТИВ ===== */
@media (max-width: 980px) {
    .factors {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .factors {
        grid-template-columns: 1fr;
    }

    .calc__grid {
        grid-template-columns: 1fr;
    }

    .calc__result {
        flex-direction: column;
        align-items: flex-start;
    }

    .calc__range-wrapper {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .calc__volume-input {
        width: 100%;
    }
}