/* ---------------------------------------------------------------------------
   Калькулятор дохода — отдельный файл по образцу донора (mvpsb.live/calc.css).
   Подключается после site.css в base.html.
   --------------------------------------------------------------------------- */

/* Секция калькулятора: тёмный фон и вертикальный ритм донора. */
.section--calculator {
    padding: 80px 0;
    background: #110021;
}

.section-heading--calculator {
    display: block;
    margin-bottom: 50px;
    text-align: center;
}

.section-heading--calculator h2 {
    margin: 0;
    color: #ad73ff;
    font-size: clamp(1.6rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: .15em;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(235, 212, 255, .16);
}

.section-heading--calculator .section-heading__description {
    max-width: 62ch;
    margin: 18px auto 0;
}

.calc {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 30px;
    align-items: stretch;
    margin-bottom: 30px;
}

.calc__panel {
    padding: clamp(25px, 3.4vw, 35px);
    border: 1px solid rgba(138, 43, 226, .4);
    border-radius: 20px;
    background: #1b0032;
}

.calc__heading {
    margin: 0 0 clamp(20px, 2.6vw, 30px);
    color: var(--color-white);
    font-size: clamp(1.2rem, 2.2vw, 1.5rem);
    font-weight: 500;
    letter-spacing: .02em;
}

.calc__selects {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.calc__select-wrap {
    position: relative;
    border-radius: 10px;
    background: #150225;
}

.calc__selects select {
    width: 100%;
    padding: 15px 42px 15px 20px;
    border: 0;
    border-radius: 10px;
    outline: 0;
    background: #150225;
    color: var(--color-white);
    font: inherit;
    font-size: 1rem;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

.calc__selects select:focus {
    outline: 0;
    box-shadow: 0 0 0 3px rgba(173, 115, 255, .45);
}

.calc__selects select option {
    background: #1a1035;
    color: var(--color-white);
}

.calc__slider {
    padding: 14px;
    background: #110021;
}

.calc__slider:first-of-type {
    border-radius: 10px 10px 0 0;
}

.calc__slider + .calc__slider {
    padding-top: 10px;
}

.calc__slider:last-of-type {
    margin-bottom: 16px;
    border-radius: 0 0 10px 10px;
}

.calc__slider-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.calc__slider-label {
    color: var(--color-white);
    font-size: 1rem;
}

.calc__slider-value {
    color: var(--color-white);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Ползунок донора: серая «дорожка» 40px с узким бегунком-палочкой и
   фиолетовой заливкой слева до бегунка. */
.calc input[type="range"] {
    --calc-range-percent: 50%;
    width: 100%;
    height: 40px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 5px;
    outline: 0;
    background: linear-gradient(
        to right,
        #8907ff 0%,
        #b460ff var(--calc-range-percent),
        #2d2640 var(--calc-range-percent),
        #2d2640 100%
    );
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.calc input[type="range"]::-webkit-slider-thumb {
    width: 3px;
    height: 40px;
    border: 0;
    border-radius: 0;
    background: #1a1035;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.calc input[type="range"]::-moz-range-track {
    height: 40px;
    border-radius: 5px;
    background: #2d2640;
}

.calc input[type="range"]::-moz-range-progress {
    height: 40px;
    border-radius: 5px 0 0 5px;
    background: linear-gradient(90deg, #8907ff 0%, #b460ff 100%);
}

.calc input[type="range"]::-moz-range-thumb {
    width: 3px;
    height: 40px;
    border: 0;
    border-radius: 0;
    background: #1a1035;
    cursor: pointer;
}

.calc input[type="range"]::-ms-track {
    height: 40px;
    border: 0;
    border-radius: 5px;
    background: #2d2640;
    color: transparent;
}

.calc input[type="range"]::-ms-fill-lower {
    border-radius: 5px 0 0 5px;
    background: linear-gradient(90deg, #8907ff 0%, #b460ff 100%);
}

.calc input[type="range"]::-ms-fill-upper {
    border-radius: 0 5px 5px 0;
    background: #2d2640;
}

.calc input[type="range"]::-ms-thumb {
    width: 3px;
    height: 40px;
    border: 0;
    border-radius: 0;
    background: #1a1035;
    cursor: pointer;
}

.calc input[type="range"]:focus-visible {
    box-shadow: 0 0 0 3px rgba(173, 115, 255, .5);
}

.calc__result {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    min-height: 280px;
    padding: 30px;
    overflow: hidden;
    border-radius: 20px;
    /* Подложка донора: поверх градиента кладём сгенерированный кадр calc_nbg.jpg,
       текст результата остаётся на z-index 2 поверх неё. */
    background:
        url("../images/calc_nbg.jpg") right center / cover no-repeat,
        linear-gradient(135deg, #6b21a8 0%, #9333ea 50%, #7c3aed 100%);
}

.calc__result-label {
    position: relative;
    z-index: 2;
    margin: 0 0 5px;
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 500;
}

.calc__result-amount {
    position: relative;
    z-index: 2;
    margin: 0;
    color: var(--color-white);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.05;
    word-break: break-word;
}

.calc__bottom {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-top: 30px;
    padding: 30px 35px;
    border-radius: 20px;
    background: rgba(0, 0, 0, .35);
}

.calc__premium-title {
    margin: 0 0 15px;
    color: var(--color-white);
    font-size: 1.2rem;
    font-weight: 700;
}

.calc__premium-row {
    display: flex;
    gap: 40px;
    margin-bottom: 8px;
    color: var(--color-white);
    font-size: 1rem;
}

.calc__premium-row span:first-child {
    min-width: 100px;
}

.calc__note {
    color: var(--color-white);
    font-size: 1.1rem;
    text-align: right;
}

/* Тёмные поля заявки поверх панели калькулятора. */
.calculator .form-field label,
.calculator .form-check label {
    color: var(--color-light-muted);
}

.calculator .form-field input,
.calculator .form-field textarea,
.calculator .form-field select {
    background: #150225;
    border-color: rgba(138, 43, 226, .4);
    color: var(--color-white);
}

.calculator .form-field input::placeholder,
.calculator .form-field textarea::placeholder {
    color: rgba(255, 255, 255, .45);
}

.calculator .form-field input:hover,
.calculator .form-field textarea:hover,
.calculator .form-field select:hover {
    border-color: var(--color-purple-bright);
    background: rgba(255, 255, 255, .1);
}

.calculator .form-field input:focus,
.calculator .form-field textarea:focus,
.calculator .form-field select:focus {
    border-color: var(--color-purple-bright);
    background: rgba(255, 255, 255, .12);
    box-shadow: 0 0 0 4px rgba(155, 81, 224, .28);
}

.calculator .form-field input[aria-invalid="true"],
.calculator .form-field textarea[aria-invalid="true"] {
    border-color: #e2567f;
    background: rgba(226, 86, 127, .12);
}

.calculator .form-error {
    color: #ffb3c6;
}

.calculator .button {
    margin-top: 24px;
}

/* ---------------------------------------------------------------------------
   Брейкпоинты калькулятора: 992 / 768 / 480 (как у донора).
   --------------------------------------------------------------------------- */
@media (max-width: 992px) {
    .calc {
        grid-template-columns: minmax(0, 1fr);
    }

    .calc__result {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .section--calculator {
        padding: 60px 0;
    }

    .section-heading--calculator {
        margin-bottom: 35px;
    }

    .calc__selects {
        grid-template-columns: minmax(0, 1fr);
        gap: 15px;
    }

    .calc__bottom {
        flex-direction: column;
        gap: 25px;
    }

    .calc__note {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .section--calculator {
        padding: 40px 0;
    }

    .calc__heading {
        font-size: 1.2rem;
    }

    .calc__result-amount {
        font-size: 2rem;
    }

    .calc__panel,
    .calc__bottom {
        padding: 20px;
    }
}