/* ============================================================
   SHUM-STENY.CSS — Страница шумоизоляции стен
   ============================================================ */

/* ── PAGE HERO ───────────────────────────────────────────── */
.page-hero {
    background: linear-gradient(135deg, #1a2a3a 0%, #0f1c2d 60%, #1a2f4a 100%);
    padding: 120px 0 70px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(59, 110, 165, 0.25) 0%, transparent 70%);
    pointer-events: none;
}

.page-hero__breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
}

.page-hero__breadcrumb a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: color 0.2s;
}

.page-hero__breadcrumb a:hover {
    color: #fff;
}

.page-hero__title {
    font-size: clamp(32px, 5vw, 58px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: #fff;
}

.page-hero__title-accent {
    color: #5d9be6;
}

.page-hero__subtitle {
    font-size: clamp(15px, 2vw, 18px);
    line-height: 1.65;
    color: rgba(255,255,255,0.80);
    max-width: 640px;
    margin-bottom: 28px;
}

.page-hero__subtitle strong {
    color: #fff;
}

.page-hero__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
}

.page-hero__chip {
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
    font-size: 13px;
    padding: 7px 14px;
    border-radius: 100px;
    backdrop-filter: blur(6px);
}

.page-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}


/* ── SS-INTRO ─────────────────────────────────────────────── */
.ss-intro {
    background: #f7f9fc;
}

.ss-intro__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.section-tag {
    display: inline-block;
    background: #e8f0fa;
    color: #3b6ea5;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.ss-intro__content .section-title {
    margin-bottom: 20px;
}

.ss-intro__text {
    color: #555;
    line-height: 1.7;
    margin-bottom: 16px;
    font-size: 15px;
}

.ss-intro__text strong {
    color: #222;
}

.ss-intro__stats {
    display: flex;
    gap: 32px;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid #e2e8f0;
}

.ss-intro__stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ss-intro__stat-num {
    font-size: 28px;
    font-weight: 800;
    color: #3b6ea5;
    line-height: 1;
}

.ss-intro__stat-label {
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* Bar chart */
.ss-intro__db-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px 24px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.07);
}

.ss-intro__db-row {
    margin-bottom: 16px;
}

.ss-intro__db-row:last-child {
    margin-bottom: 0;
}

.ss-intro__db-label {
    font-size: 12px;
    color: #555;
    display: block;
    margin-bottom: 6px;
}

.ss-intro__db-bar-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ss-intro__db-bar {
    height: 22px;
    border-radius: 4px;
    transition: width 0.8s ease;
}

.ss-intro__db-bar--base   { background: #d0d8e4; }
.ss-intro__db-bar--slim   { background: #a8c4e0; }
.ss-intro__db-bar--base2  { background: #7aade6; }
.ss-intro__db-bar--std    { background: #4a90d9; }
.ss-intro__db-bar--prem   { background: #3b6ea5; }

.ss-intro__db-val {
    font-size: 12px;
    font-weight: 600;
    color: #333;
    white-space: nowrap;
}

.ss-intro__db-note {
    font-size: 11px;
    color: #aaa;
    margin-top: 16px;
    line-height: 1.5;
}


/* ── SS-SYSTEMS ───────────────────────────────────────────── */
.ss-systems {
    background: #fff;
}

/* Comparison table */
.ss-compare {
    background: #f7f9fc;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 60px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.ss-compare__header {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1fr 1.3fr 1.3fr 1.8fr;
    gap: 0;
    background: #1a2a3a;
    color: rgba(255,255,255,0.7);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    padding: 14px 20px;
}

.ss-compare__row {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1fr 1.3fr 1.3fr 1.8fr;
    gap: 0;
    padding: 14px 20px;
    align-items: center;
    border-bottom: 1px solid #e8edf4;
    font-size: 14px;
    transition: background 0.2s;
}

.ss-compare__row:last-child {
    border-bottom: none;
}

.ss-compare__row:hover {
    background: #edf2fa;
}

.ss-compare__name {
    font-weight: 700;
    color: #1a2a3a;
}

.ss-compare__badge {
    display: inline-block;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 100px;
    font-weight: 600;
}

.ss-compare__badge--slim  { background: #e8f4ff; color: #1a7fd4; }
.ss-compare__badge--base  { background: #e8f0fa; color: #3b6ea5; }
.ss-compare__badge--std   { background: #e3f0e8; color: #2a8a45; }
.ss-compare__badge--prem  { background: #fef3e2; color: #c07c1a; }

.ss-compare__level {
    font-size: 11px;
    font-weight: 600;
}

.ss-compare__level--1 { color: #88aacc; }
.ss-compare__level--2 { color: #3b6ea5; }
.ss-compare__level--3 { color: #2a8a45; }
.ss-compare__level--4 { color: #c07c1a; }

/* System cards */
.ss-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.ss-card {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    background: #fff;
    border: 2px solid transparent;
}

.ss-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.13);
}

.ss-card--featured {
    border-color: #3b6ea5;
}

.ss-card__popular-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: #3b6ea5;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 100px;
    z-index: 2;
    letter-spacing: .03em;
}

/* Card headers */
.ss-card__header {
    padding: 28px 28px 20px;
    color: #fff;
}

.ss-card__header--slim {
    background: linear-gradient(135deg, #1a7fd4, #1a4f8a);
}

.ss-card__header--base {
    background: linear-gradient(135deg, #3b6ea5, #1a2a3a);
}

.ss-card__header--std {
    background: linear-gradient(135deg, #2a8a45, #1a5c30);
}

.ss-card__header--prem {
    background: linear-gradient(135deg, #c07c1a, #7a4e10);
}

.ss-card__type {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    opacity: 0.8;
    margin-bottom: 6px;
}

.ss-card__title {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 6px;
}

.ss-card__code {
    font-size: 12px;
    opacity: 0.65;
    margin-bottom: 10px;
}

.ss-card__badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 100px;
}

.ss-card__body {
    padding: 24px 28px 28px;
}

.ss-card__desc {
    margin-bottom: 20px;
}

.ss-card__desc p {
    font-size: 14px;
    line-height: 1.65;
    color: #555;
    margin-bottom: 10px;
}

.ss-card__desc p:last-child {
    margin-bottom: 0;
}

.ss-card__desc strong {
    color: #222;
}

/* Specs */
.ss-card__specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    background: #f7f9fc;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.ss-card__spec {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ss-card__spec-label {
    font-size: 11px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.ss-card__spec-val {
    font-size: 15px;
    font-weight: 700;
    color: #1a2a3a;
}

/* Composition */
.ss-card__composition {
    margin-bottom: 20px;
}

.ss-card__composition h4 {
    font-size: 13px;
    font-weight: 600;
    color: #444;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.ss-card__layers {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ss-card__layers li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.ss-card__layer-num {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #e8f0fa;
    color: #3b6ea5;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}

.ss-card__layers li > div {
    flex: 1;
}

.ss-card__layers li > div strong {
    font-size: 13px;
    color: #222;
    display: block;
    margin-bottom: 2px;
}

.ss-card__layer-note {
    font-size: 12px;
    color: #888;
    display: block;
    line-height: 1.5;
}

/* Pros */
.ss-card__pros {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.ss-card__pro {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: #444;
    line-height: 1.4;
}

.ss-card__pro svg {
    flex-shrink: 0;
    margin-top: 1px;
}

/* For section */
.ss-card__for {
    background: #f0f6ff;
    border-left: 3px solid #3b6ea5;
    padding: 12px 14px;
    border-radius: 0 8px 8px 0;
    font-size: 13px;
    color: #444;
    line-height: 1.5;
    margin-bottom: 20px;
}

.ss-card__for strong {
    color: #1a2a3a;
}

/* Price */
.ss-card__price {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    background: #fff9f0;
    border: 1px solid #f0e0c0;
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 14px;
}

.ss-card__price-label {
    font-size: 12px;
    color: #888;
}

.ss-card__price-val {
    font-size: 20px;
    font-weight: 800;
    color: #c07c1a;
}

.btn--full {
    width: 100%;
    justify-content: center;
    margin-bottom: 12px;
}

.ss-card__pdf-link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #3b6ea5;
    text-decoration: none;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.ss-card__pdf-link:hover {
    opacity: 1;
    text-decoration: underline;
}


/* ── SS-CHOOSE ────────────────────────────────────────────── */
.ss-choose {
    background: #f7f9fc;
}

.ss-choose__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.ss-choose__card {
    background: #fff;
    border-radius: 16px;
    padding: 24px 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.3s;
}

.ss-choose__card:hover {
    transform: translateY(-3px);
}

.ss-choose__card--highlight {
    background: #f0f5fb;
    color: #1a2a3a;
    border: 2px solid #3b6ea5;
}

.ss-choose__card--highlight h4 {
    color: #1a2a3a;
}

.ss-choose__card--highlight p {
    color: #444;
}

.ss-choose__card--highlight .ss-choose__link {
    color: #3b6ea5;
}

.ss-choose__icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.ss-choose__card h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1a2a3a;
    margin-bottom: 10px;
    line-height: 1.3;
}

.ss-choose__card p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 16px;
}

.ss-choose__card p strong {
    color: #1a2a3a;
}

.ss-choose__card--highlight p strong {
    color: #1a2a3a;
}

.ss-choose__link {
    font-size: 13px;
    font-weight: 600;
    color: #3b6ea5;
    text-decoration: none;
}

.ss-choose__link:hover {
    text-decoration: underline;
}


/* ── REQUEST FORM SECTION ─────────────────────────────────── */
.request__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.request__subtitle {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
    line-height: 1.6;
    margin-bottom: 24px;
}

.request__benefits {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.request__benefit {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.85);
}

.request__benefit svg {
    flex-shrink: 0;
    margin-top: 1px;
}

.request-form {
    background: #fff;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.15);
}

.request-form__title {
    font-size: 20px;
    font-weight: 700;
    color: #1a2a3a;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #444;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    border: 1.5px solid #dde3ec;
    border-radius: 10px;
    font-size: 14px;
    color: #1a2a3a;
    transition: border-color 0.2s;
    outline: none;
    background: #fcfdff;
}

.form-input:focus {
    border-color: #3b6ea5;
    background: #fff;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-group--checkbox {
    margin-bottom: 20px;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    display: none;
}

.form-checkbox__mark {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border: 2px solid #dde3ec;
    border-radius: 4px;
    background: #fff;
    margin-top: 2px;
    transition: all 0.2s;
    position: relative;
}

.form-checkbox input:checked + .form-checkbox__mark {
    background: #3b6ea5;
    border-color: #3b6ea5;
}

.form-checkbox input:checked + .form-checkbox__mark::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: 2px solid #fff;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

.form-checkbox__text {
    font-size: 12px;
    color: #888;
    line-height: 1.5;
}

.form-link {
    color: #3b6ea5;
}

.form-success {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px 0;
    gap: 10px;
}

.form-success h4 {
    font-size: 20px;
    font-weight: 700;
    color: #1a2a3a;
}

.form-success p {
    font-size: 14px;
    color: #666;
}


/* ── FLOATING CTA ─────────────────────────────────────────── */
.floating-cta {
    position: fixed;
    bottom: 28px;
    right: 24px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.floating-cta__phone {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #3b6ea5;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59,110,165,0.4);
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.floating-cta__phone:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(59,110,165,0.55);
}


/* ── SECTION BASE ─────────────────────────────────────────── */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 50px;
}

.section-title {
    font-size: clamp(26px, 3.5vw, 40px);
    font-weight: 800;
    color: #1a2a3a;
    line-height: 1.2;
    margin-bottom: 14px;
}

.section-title .accent,
.section-title .accent-text {
    color: #3b6ea5;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

.request.section {
    background: linear-gradient(135deg, #1a2a3a 0%, #0f1c2d 100%);
}

.request .section-title {
    color: #fff;
}

.request .section-tag {
    background: rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.8);
}


/* ── FOOTER (page-specific adjustments) ──────────────────── */
.footer {
    background: #0f1c2d;
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}

.footer__inner {
    display: flex;
    gap: 60px;
    margin-bottom: 40px;
    align-items: flex-start;
}

.footer__brand {
    flex-shrink: 0;
}

.footer__logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.footer__logo span {
    color: #5d9be6;
}

.footer__tagline {
    margin-top: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    max-width: 200px;
    line-height: 1.5;
}

.footer__nav {
    flex: 1;
    display: flex;
    gap: 40px;
}

.footer__nav-col h4 {
    font-size: 13px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 14px;
}

.footer__nav-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer__nav-col a {
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    transition: color 0.2s;
}

.footer__nav-col a:hover {
    color: #fff;
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copy {
    font-size: 12px;
    color: rgba(255,255,255,0.35);
}

.footer__legal a {
    font-size: 12px;
    color: rgba(255,255,255,0.35);
    text-decoration: none;
}

.footer__legal a:hover {
    color: rgba(255,255,255,0.7);
}


/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1100px) {
    .ss-intro__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .ss-cards {
        grid-template-columns: 1fr;
    }

    .ss-compare {
        overflow-x: auto;
    }

    .ss-compare__header,
    .ss-compare__row {
        min-width: 640px;
    }
}

@media (max-width: 900px) {
    .ss-choose__grid {
        grid-template-columns: 1fr 1fr;
    }

    .request__inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer__inner {
        flex-direction: column;
        gap: 32px;
    }

    .footer__nav {
        flex-wrap: wrap;
        gap: 28px;
    }
}

@media (max-width: 640px) {
    .page-hero {
        padding: 100px 0 50px;
    }

    .page-hero__actions {
        flex-direction: column;
    }

    .page-hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .ss-choose__grid {
        grid-template-columns: 1fr;
    }

    .ss-intro__stats {
        gap: 20px;
    }

    .ss-card__specs {
        grid-template-columns: 1fr;
    }

    .ss-card__body {
        padding: 20px;
    }

    .ss-card__header {
        padding: 20px 20px 16px;
    }

    .request-form {
        padding: 24px 20px;
    }

    .footer__nav {
        flex-direction: column;
        gap: 24px;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Header active nav link */
.header__nav-link--active {
    color: #3b6ea5 !important;
    font-weight: 600;
}