:root {
    --calc-brand: #2563eb;
    --calc-brand-dark: #1d4ed8;
    --calc-bg: #f0f5ff;
    --calc-text: #1e293b;
    --calc-muted: #64748b;
    --calc-border: #dbeafe;
}

.calc-hero {
    position: relative;
    padding: 2.5rem 0 2rem;
    overflow: hidden;
}

.calc-hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0f2744 0%, #1a3a5c 40%, #2c5282 100%);
    z-index: 1;
}

.calc-hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 25% 75%, rgba(49, 130, 206, .12) 0%, transparent 50%),
    radial-gradient(circle at 75% 25%, rgba(66, 153, 225, .08) 0%, transparent 50%);
    z-index: 1;
}

.calc-hero-bg::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 55px;
    background: var(--calc-bg);
    clip-path: ellipse(55% 100% at 50% 100%);
    z-index: 2;
}

.calc-hero .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, .55);
}

.calc-hero-breadcrumb-link {
    color: rgba(255, 255, 255, .85);
}

.calc-hero .agreement-breadcrumb a.calc-hero-breadcrumb-link {
    color: rgba(255, 255, 255, .85);
}

.calc-hero .agreement-breadcrumb a.calc-hero-breadcrumb-link:hover {
    color: #fff;
}

.calc-hero-content {
    display: inline-block;
    max-width: 100%;
    background: rgba(3, 12, 32, .22);
    border: 1px solid rgba(191, 219, 254, .22);
    border-radius: 1rem;
    padding: .9rem 1.1rem;
    backdrop-filter: blur(2px);
}

.calc-hero-breadcrumb-current {
    color: rgba(255, 255, 255, .65);
}

.calc-hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, .15);
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 2rem;
    padding: .25rem .85rem;
    font-size: .78rem;
    margin-bottom: .75rem;
    letter-spacing: .03em;
    color: #fff;
}

.calc-hero-title {
    color: #f8fbff !important;
    font-size: 1.9rem;
    font-weight: 800;
    margin-bottom: .4rem;
    letter-spacing: -.01em;
    text-shadow: 0 8px 24px rgba(2, 6, 23, .45), 0 1px 2px rgba(2, 6, 23, .65);
    animation: heroFadeDown .6s ease both;
    -webkit-hyphens: none;
    -ms-hyphens: none;
    hyphens: none;
    word-break: keep-all;
    overflow-wrap: normal;
}

.calc-hero-subtitle {
    color: rgba(248, 250, 252, .95) !important;
    font-size: .95rem;
    animation: heroFadeDown .6s ease .12s both;
    text-shadow: 0 1px 2px rgba(2, 6, 23, .45);
}

.calc-hero-breadcrumb-link,
.calc-hero-breadcrumb-current {
    text-shadow: 0 1px 2px rgba(2, 6, 23, .45);
}

.calc-hero .agreement-breadcrumb .breadcrumb-item,
.calc-hero .agreement-breadcrumb .breadcrumb-item::before {
    color: rgba(226, 232, 240, .9);
}

.calc-hero-badge {
    background: rgba(255, 255, 255, .2);
    border-color: rgba(255, 255, 255, .3);
    color: #fff;
}

.calc-version-chip {
    background: rgba(255, 255, 255, .2) !important;
    border-color: rgba(255, 255, 255, .33) !important;
    color: #fff !important;
    box-shadow: 0 6px 18px rgba(2, 6, 23, .24);
}

.calc-page-shell {
    background: var(--calc-bg);
    padding-top: 1.15rem;
}

.calc-page-card {
    background: #fff;
    border: 1px solid var(--calc-border);
    border-radius: 1rem;
    box-shadow: 0 2px 16px rgba(30, 64, 175, .07);
    padding: 1.25rem;
}

.calc-page-title {
    color: var(--calc-text);
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0;
}

.calc-page-subtitle {
    color: var(--calc-muted);
    font-size: .95rem;
}

/* ── Общая кнопка обратной связи для всех калькуляторов ── */
.calc-feedback-button-wrap {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
    margin-bottom: .25rem;
}

.calc-feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .6rem 1.4rem;
    font-size: .9rem;
    font-weight: 600;
    letter-spacing: -.01em;
    color: #fff;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 55%, #1e40af 100%);
    border: none;
    border-radius: 999px;
    box-shadow:
        0 4px 14px rgba(37, 99, 235, .32),
        0 0 0 1px rgba(255, 255, 255, .15) inset;
    cursor: pointer;
    transition:
        background .22s cubic-bezier(.4, 0, .2, 1),
        box-shadow .22s cubic-bezier(.4, 0, .2, 1),
        transform .18s cubic-bezier(.4, 0, .2, 1);
    position: relative;
    overflow: hidden;
}

.calc-feedback-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, .2) 0%, transparent 60%);
    pointer-events: none;
}

.calc-feedback-btn:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 55%, #1a2e5c 100%);
    box-shadow:
        0 8px 24px rgba(37, 99, 235, .42),
        0 0 0 1px rgba(255, 255, 255, .2) inset;
    transform: translateY(-1px);
    color: #fff;
}

.calc-feedback-btn:active {
    transform: translateY(0);
    box-shadow:
        0 2px 6px rgba(37, 99, 235, .28),
        0 0 0 1px rgba(255, 255, 255, .15) inset;
}

.calc-feedback-btn i {
    position: relative;
    z-index: 1;
    font-size: 1rem;
}

.calc-feedback-btn span {
    position: relative;
    z-index: 1;
}

/* ── Общий CTA-блок обратной связи/идей ── */
.calc-feedback-cta {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(37, 99, 235, .14);
}

.calc-feedback-cta__card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .95rem 1rem;
    background: linear-gradient(135deg, #f8fbff 0%, #eff6ff 100%);
    border: 1px solid #dbeafe;
    border-radius: .9rem;
    box-shadow: 0 1px 10px rgba(37, 99, 235, .06);
}

.calc-feedback-cta__meta {
    min-width: 0;
}

.calc-feedback-cta__title {
    display: flex;
    align-items: center;
    gap: .45rem;
    margin: 0 0 .22rem;
    font-size: .84rem;
    font-weight: 700;
    color: #1e3a8a;
}

.calc-feedback-cta__text {
    margin: 0;
    font-size: .76rem;
    line-height: 1.5;
    color: #64748b;
}

.calc-feedback-cta .calc-feedback-button-wrap {
    justify-content: flex-start;
    margin: 0;
    flex-shrink: 0;
}

/* ── Модальное окно обратной связи ── */

/* Анимация появления */
@keyframes cfb-modal-in {
    from {
        opacity: 0;
        transform: translateY(22px) scale(.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#calculatorFeedbackModal.show .calc-feedback-modal-dialog {
    animation: cfb-modal-in .38s cubic-bezier(.34, 1.26, .64, 1) both;
}

.calc-feedback-modal-dialog {
    max-width: 560px;
}

.calc-feedback-modal {
    border: 0;
    border-radius: 1.2rem;
    overflow: hidden;
    box-shadow:
        0 24px 80px rgba(15, 23, 42, .24),
        0 8px 24px rgba(37, 99, 235, .10);
}

.calc-feedback-modal__header {
    padding: 1.1rem 1.2rem .95rem;
    border-bottom: 1px solid rgba(148, 163, 184, .24);
    background:
        linear-gradient(180deg, rgba(248, 250, 252, .96) 0%, rgba(255, 255, 255, 1) 100%);
    align-items: flex-start;
}

.calc-feedback-modal__header-inner {
    display: flex;
    align-items: flex-start;
    gap: .85rem;
}

.calc-feedback-modal__icon-badge {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f6fff 0%, #36558d 100%);
    box-shadow:
        0 6px 18px rgba(79, 111, 255, .30),
        0 0 0 5px rgba(79, 111, 255, .10);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    margin-top: .08rem;
}

.calc-feedback-modal__icon-badge i {
    line-height: 1;
}

.calc-feedback-modal__title {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin: 0 0 .32rem;
    color: #36558d;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -.01em;
}

.calc-feedback-modal__title i {
    color: #4f6fff;
    font-size: 1rem;
}

.calc-feedback-modal__subtitle {
    max-width: 420px;
    color: #64748b;
    font-size: .8rem;
    line-height: 1.45;
}

.calc-feedback-modal__close {
    opacity: .7;
    transition: opacity .18s ease, transform .18s ease;
}

.calc-feedback-modal__close:hover {
    opacity: 1;
    transform: rotate(90deg);
}

.calc-feedback-modal__body {
    padding: 1.15rem 1.2rem .85rem;
    background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
}

.calc-feedback-modal__footer {
    padding: .9rem 1.2rem 1rem;
    border-top: 1px solid rgba(148, 163, 184, .22);
    background: linear-gradient(180deg, rgba(248, 250, 252, .92) 0%, rgba(255, 255, 255, 1) 100%);
    gap: .55rem;
}

.calc-feedback-field-group {
    padding: .95rem 1rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid #e2e8f0;
    border-radius: .95rem;
    box-shadow: 0 1px 8px rgba(15, 23, 42, .04);
}

.calc-feedback-label {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    margin-bottom: .55rem;
    font-size: .82rem;
    font-weight: 700;
    color: #3f5f97;
}

.calc-feedback-label__muted {
    font-weight: 600;
    color: #7c8da8;
}

.calc-feedback-help {
    margin-top: .45rem;
    font-size: .74rem;
    color: #6b7280;
    line-height: 1.4;
}

.calc-feedback-control {
    border-radius: .8rem;
    border: 1px solid #d9e2f0;
    background: #fff;
    padding: .72rem .92rem;
    font-size: .95rem;
    color: #1e293b;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, .02);
    transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
}

.calc-feedback-control::placeholder {
    color: #9aa7ba;
}

.calc-feedback-control:hover {
    border-color: #bfd0eb;
}

.calc-feedback-control:focus {
    border-color: #7aa2ff;
    box-shadow: 0 0 0 4px rgba(79, 111, 255, .12);
    background: #fff;
}

.calc-feedback-control--textarea {
    min-height: 132px;
    resize: vertical;
}

.calc-feedback-captcha-row {
    display: flex;
    align-items: center;
    gap: .7rem;
    flex-wrap: wrap;
}

.calc-feedback-captcha-pill {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .62rem .8rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #edf4ff 0%, #f6f9ff 100%);
    border: 1px solid #d7e4fb;
    color: #355286;
    font-size: .84rem;
    font-weight: 700;
    line-height: 1;
}

.calc-feedback-captcha-pill i {
    color: #4f6fff;
}

.calc-feedback-control--captcha {
    width: 120px;
    text-align: center;
    font-weight: 700;
}

.calc-feedback-error {
    margin-top: .55rem;
    color: #dc2626;
    font-size: .75rem;
    font-weight: 600;
}

/* Статусные блоки success / error */
.calc-feedback-status {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    padding: .85rem 1rem;
    border-radius: .9rem;
    font-size: .84rem;
    line-height: 1.45;
    font-weight: 500;
}

.calc-feedback-status--success {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid #bbf7d0;
    color: #15803d;
}

.calc-feedback-status--success i {
    font-size: 1.15rem;
    color: #16a34a;
    flex-shrink: 0;
    margin-top: .05rem;
}

.calc-feedback-status--error {
    background: linear-gradient(135deg, #fff5f5 0%, #fef2f2 100%);
    border: 1px solid #fecaca;
    color: #b91c1c;
}

.calc-feedback-status--error i {
    font-size: 1.1rem;
    color: #dc2626;
    flex-shrink: 0;
    margin-top: .05rem;
}

.calc-feedback-btn-secondary,
.calc-feedback-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    min-height: 40px;
    padding: .55rem 1rem;
    border-radius: .8rem;
    font-size: .88rem;
    font-weight: 700;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}

.calc-feedback-btn-secondary {
    color: #64748b;
    background: #fff;
    border: 1px solid #cfd8e6;
}

.calc-feedback-btn-secondary:hover {
    color: #334155;
    border-color: #b7c4d8;
    background: #f8fafc;
}

.calc-feedback-btn-primary {
    color: #fff;
    border: 1px solid transparent;
    background: linear-gradient(135deg, #36558d 0%, #3f5f97 100%);
    box-shadow: 0 6px 18px rgba(54, 85, 141, .22);
}

.calc-feedback-btn-primary:hover {
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(54, 85, 141, .28);
}

.calc-feedback-btn-primary:disabled {
    opacity: .8;
    transform: none;
}

@media (min-width: 992px) {
    .calc-page-card {
        padding: 1.75rem;
    }
}

@media (max-width: 767.98px) {
    .calc-hero {
        padding: 2rem 0 2rem;
    }

    .calc-hero-content {
        width: 100%;
        padding: .75rem .85rem;
    }

    .calc-hero-title {
        font-size: 1.5rem;
    }

    .calc-hero-subtitle {
        font-size: .88rem;
    }

    .calc-page-shell {
        padding-top: .9rem;
    }

    .calc-feedback-cta__card {
        flex-direction: column;
        align-items: stretch;
    }

    .calc-feedback-cta .calc-feedback-button-wrap {
        justify-content: center;
        width: 100%;
    }

    .calc-feedback-modal__header,
    .calc-feedback-modal__body,
    .calc-feedback-modal__footer {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .calc-feedback-field-group {
        padding: .85rem .9rem;
    }

    .calc-feedback-captcha-row {
        align-items: stretch;
    }

    .calc-feedback-captcha-pill,
    .calc-feedback-control--captcha {
        width: 100%;
        justify-content: center;
    }

    .calc-feedback-modal__footer {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .calc-feedback-btn-secondary,
    .calc-feedback-btn-primary {
        width: 100%;
    }
}