/**
 * UI/UX Final Polish — единая визуальная система Phase 1–5
 * Fix: :root { font-size: 0 } — явные размеры для контентных зон
 */

:root {
    --ui-container: 1240px;
    --ui-text-max: 760px;
    --ui-section-y: 80px;
    --ui-section-y-sm: 48px;
    --ui-radius: 12px;
    --ui-radius-sm: 8px;
    --ui-border: #e8e8ee;
    --ui-bg-soft: #f8f7fc;
    --ui-text: #1a1a2e;
    --ui-text-body: #444;
    --ui-text-muted: #666;
    --ui-primary: #4334A1;
    --ui-primary-light: #5B46D9;
    --ui-shadow: 0 8px 32px rgba(26, 26, 46, .08);
    --ui-shadow-hover: 0 16px 40px rgba(67, 52, 161, .12);
}

/* ── Container & readable width ── */
.app .container {
    max-width: var(--ui-container);
    margin-left: auto;
    margin-right: auto;
}

.ui-readable,
.landing-lead,
.landing-text,
.commercial-price-note,
.podbor-quiz-subtitle {
    max-width: var(--ui-text-max);
}

/* ── Global font-size fix for content areas ── */
.landing-hero,
.landing-content,
.landing-section-title,
.landing-h1,
.landing-lead,
.landing-related-list li,
.commercial-block,
.commercial-card,
.commercial-card-title,
.commercial-card-text,
.podbor-quiz-shell,
.podbor-quiz-option,
.podbor-quiz-option-text,
.podbor-quiz-step-title,
.podbor-label,
.podbor-field input,
.podbor-field select,
.podbor-field textarea,
.home-section,
.home-direction-card,
.home-link-card,
.home-service-card,
.home-b2b-section,
.home-expert-hub-card,
.b-faq,
.b-cases,
.expert-cta,
.cro-section-layer,
.cro-catalog-layer {
    font-size: 16px;
}

.landing-section-title,
.home-section-title {
    font-size: clamp(28px, 2.8vw, 36px);
    line-height: 120%;
}

.landing-h1 {
    font-size: clamp(32px, 3.5vw, 48px);
}

.landing-lead,
.podbor-quiz-subtitle {
    font-size: 18px;
    line-height: 160%;
    color: var(--ui-text-body);
}

.landing-related-list li {
    color: var(--ui-text-body);
    line-height: 155%;
}

/* ── Section spacing ── */
.commercial-block {
    padding: var(--ui-section-y-sm) 0;
}

.commercial-block-alt {
    background: var(--ui-bg-soft);
}

.home-section {
    padding: var(--ui-section-y) 0;
}

.landing-hero {
    padding: 56px 0;
}

/* ── Card system ── */
.ui-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.ui-card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.ui-card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.ui-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius);
    transition: border-color .2s, box-shadow .2s, transform .2s;
}

.ui-card:hover {
    border-color: #d5d0ea;
    box-shadow: var(--ui-shadow);
    transform: translateY(-2px);
}

.ui-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0edff;
    border-radius: 10px;
    color: var(--ui-primary);
    flex-shrink: 0;
}

.ui-card-icon svg {
    width: 24px;
    height: 24px;
}

.ui-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ui-text);
    margin: 0;
    line-height: 130%;
}

.ui-card-text {
    font-size: 15px;
    line-height: 155%;
    color: var(--ui-text-muted);
    margin: 0;
    flex: 1;
}

.ui-card-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--ui-primary);
    text-decoration: none;
}

.ui-card-link:hover {
    text-decoration: underline;
}

/* ── Commercial hero split ── */
.commercial-hero-split {
    padding: 56px 0;
    background: var(--ui-bg-soft);
    border-bottom: 2px solid #f0efef;
}

.commercial-hero-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 40px;
    align-items: center;
}

.commercial-hero-content .landing-h1 {
    margin-bottom: 16px;
}

.commercial-hero-benefits {
    display: grid;
    gap: 10px;
    margin: 24px 0;
    padding: 0;
    list-style: none;
}

.commercial-hero-benefits li {
    position: relative;
    padding-left: 28px;
    font-size: 16px;
    color: var(--ui-text-body);
    line-height: 150%;
}

.commercial-hero-benefits li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    width: 16px;
    height: 16px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M3 8.5L6.5 12L13 4' stroke='%234334A1' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
}

.commercial-hero-media {
    border-radius: var(--ui-radius);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: #eee;
}

.commercial-hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.commercial-audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.commercial-audience-item {
    padding: 20px;
    background: #fff;
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius);
    font-size: 16px;
    font-weight: 500;
    color: var(--ui-text);
    text-align: center;
}

/* ── Quiz redesign ── */
.podbor-form-section {
    padding: var(--ui-section-y-sm) 0 var(--ui-section-y);
}

.podbor-quiz-shell {
    max-width: 880px;
    margin: 0 auto;
    padding: 32px;
    background: #fff;
    border: 1px solid var(--ui-border);
    border-radius: 16px;
    box-shadow: var(--ui-shadow);
}

.podbor-quiz-header {
    margin-bottom: 28px;
}

.podbor-quiz-header .landing-h1 {
    font-size: clamp(28px, 3vw, 40px);
    margin: 0 0 10px;
}

.podbor-quiz-progress-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.podbor-quiz-step-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--ui-primary);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.podbor-quiz-progress-bar {
    height: 6px;
    background: #ececf2;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 28px;
}

.podbor-quiz-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ui-primary), var(--ui-primary-light));
    border-radius: 3px;
    transition: width .35s ease;
    width: 20%;
}

.podbor-quiz-step-title {
    font-family: 'Loos Normal', sans-serif;
    font-size: clamp(22px, 2.5vw, 28px);
    margin: 0 0 20px;
    color: var(--ui-text);
}

.podbor-quiz-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.podbor-quiz-option {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    min-height: 88px;
    padding: 18px 18px 18px 48px;
    border: 2px solid var(--ui-border);
    border-radius: var(--ui-radius);
    cursor: pointer;
    background: #fff;
    transition: border-color .2s, background .2s, box-shadow .2s;
    font-size: 16px;
    color: var(--ui-text);
    line-height: 140%;
}

.podbor-quiz-option:hover {
    border-color: #c4bce8;
    box-shadow: 0 4px 16px rgba(67, 52, 161, .08);
}

.podbor-quiz-option:has(input:checked) {
    border-color: var(--ui-primary);
    background: #f8f7fc;
    box-shadow: 0 0 0 1px var(--ui-primary);
}

.podbor-quiz-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.podbor-quiz-option::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 20px;
    width: 20px;
    height: 20px;
    border: 2px solid #ccc;
    border-radius: 50%;
    background: #fff;
    transition: border-color .2s, background .2s;
}

.podbor-quiz-option:has(input:checked)::before {
    border-color: var(--ui-primary);
    background: var(--ui-primary);
    box-shadow: inset 0 0 0 4px #fff;
}

.podbor-quiz-option-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: #f0edff;
    border-radius: 8px;
    color: var(--ui-primary);
}

.podbor-quiz-option-icon svg {
    width: 22px;
    height: 22px;
}

.podbor-quiz-option-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--ui-text);
    line-height: 140%;
}

/* Safety: :root { font-size: 0 } + font: inherit */
.podbor-quiz-shell label span,
.commercial-audience-item,
.ui-card-title,
.ui-card-text,
.home-link-card-title,
.home-link-card-desc {
    font-size: inherit;
}

label.podbor-quiz-option .podbor-quiz-option-text {
    font-size: 16px;
}

.podbor-quiz-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
    align-items: center;
}

.podbor-quiz-reassurance {
    margin: 16px 0 0;
    font-size: 14px;
    color: var(--ui-text-muted);
}

.podbor-form-note {
    font-size: 14px;
    color: var(--ui-text-muted);
    margin-top: 12px;
}

.podbor-success {
    text-align: center;
    padding: 48px 24px;
    background: var(--ui-bg-soft);
    border-radius: var(--ui-radius);
}

.podbor-success h2 {
    font-family: 'Loos Normal', sans-serif;
    font-size: 28px;
    margin: 0 0 12px;
}

/* ── B2B home section ── */
.home-b2b-section {
    background: var(--ui-text);
    color: #fff;
    border-radius: 16px;
    overflow: hidden;
}

.home-b2b-inner {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 32px;
    align-items: center;
}

.home-b2b-content {
    padding: 40px 0 40px 40px;
}

.home-b2b-title {
    font-family: 'Loos Normal', sans-serif;
    font-size: clamp(26px, 2.8vw, 36px);
    margin: 0 0 14px;
    color: #fff;
}

.home-b2b-text {
    font-size: 17px;
    line-height: 160%;
    color: rgba(255, 255, 255, .88);
    margin: 0 0 20px;
    max-width: 520px;
}

.home-b2b-benefits {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
    display: grid;
    gap: 8px;
}

.home-b2b-benefits li {
    font-size: 15px;
    color: rgba(255, 255, 255, .92);
    padding-left: 24px;
    position: relative;
}

.home-b2b-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #a99cf0;
    font-weight: 700;
}

.home-b2b-media {
    min-height: 280px;
    height: 100%;
}

.home-b2b-media img {
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: cover;
    display: block;
}

.home-b2b-section .b-a-btn-primary {
    background: #fff;
    color: var(--ui-primary);
}

.home-b2b-section .b-a-btn-primary:hover {
    background: #f0f0f7;
    color: var(--ui-primary);
}

/* Fix white text on soft sections */
.home-podbor .home-podbor-text {
    color: rgba(255, 255, 255, .9);
}

.home-links-section .home-podbor-text,
.home-links-section--soft .home-podbor-text {
    color: var(--ui-text-body);
    font-size: 17px;
}

/* ── Service center cards enhanced ── */
.home-service-card {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: hidden;
}

.home-service-card-photo {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #eee;
}

.home-service-card-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.home-service-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.home-service-card-services {
    margin: 8px 0 12px;
    padding: 0;
    list-style: none;
    font-size: 14px;
    color: var(--ui-text-muted);
    line-height: 150%;
}

.home-service-card-services li {
    position: relative;
    padding-left: 14px;
    margin-bottom: 4px;
}

.home-service-card-services li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--ui-primary);
}

.home-service-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: auto;
    padding-top: 12px;
}

.home-service-card-actions .home-btn {
    min-height: 44px;
    padding: 0 20px;
    font-size: 14px;
}

/* ── Service link cards with description ── */
.home-link-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 120px;
    padding: 22px 20px;
    font-size: 16px;
}

.home-link-card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--ui-text);
}

.home-link-card-desc {
    font-size: 14px;
    line-height: 145%;
    color: var(--ui-text-muted);
}

.home-link-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0edff;
    border-radius: 8px;
    color: var(--ui-primary);
}

.home-link-card-icon svg {
    width: 22px;
    height: 22px;
}

/* ── Expert hub compact ── */
.home-expert-hub-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.home-expert-hub-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius);
    text-decoration: none;
    color: inherit;
    transition: border-color .2s, box-shadow .2s, transform .2s;
}

.home-expert-hub-card:hover {
    border-color: var(--ui-primary);
    box-shadow: var(--ui-shadow);
    transform: translateY(-2px);
}

.home-expert-hub-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ui-text);
}

.home-expert-hub-card-text {
    font-size: 14px;
    line-height: 150%;
    color: var(--ui-text-muted);
    flex: 1;
}

.home-expert-hub-card-cta {
    font-size: 14px;
    font-weight: 600;
    color: var(--ui-primary);
}

/* ── FAQ improved ── */
.b-faq-item summary {
    padding: 20px 40px 20px 0;
    font-size: 17px;
    font-weight: 600;
    min-height: 56px;
    display: flex;
    align-items: center;
}

.b-faq-item summary:hover {
    color: var(--ui-primary);
}

.b-faq-item summary:focus-visible {
    outline: 2px solid var(--ui-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.b-faq-answer p {
    font-size: 16px;
}

.b-faq--home .b-faq-list {
    max-width: 840px;
}

/* ── Cases stronger ── */
.b-case-result {
    font-size: 14px;
    color: var(--ui-text-muted);
    margin: 0 0 14px;
    line-height: 150%;
}

.b-case-btn {
    font-size: 15px;
    height: 48px;
    border-radius: var(--ui-radius-sm);
}

/* ── Button consistency ── */
.b-a-btn {
    min-height: 52px;
    border-radius: var(--ui-radius-sm);
    font-size: 16px;
}

.b-a-btn:focus-visible {
    outline: 2px solid var(--ui-primary);
    outline-offset: 2px;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .ui-card-grid,
    .ui-card-grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .commercial-hero-grid,
    .home-b2b-inner {
        grid-template-columns: 1fr;
    }

    .commercial-hero-media {
        order: -1;
        max-height: 320px;
    }

    .home-expert-hub-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .podbor-quiz-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .home-b2b-content {
        padding: 32px 32px 0;
    }

    .home-b2b-media {
        min-height: 220px;
    }
}

@media (max-width: 640px) {
    :root {
        --ui-section-y: 56px;
        --ui-section-y-sm: 40px;
    }

    .app .container {
        padding-left: 20px;
        padding-right: 20px;
    }

    .ui-card-grid,
    .ui-card-grid--2,
    .ui-card-grid--4,
    .home-expert-hub-grid {
        grid-template-columns: 1fr;
    }

    .podbor-quiz-shell {
        padding: 20px 16px;
    }

    .podbor-quiz-options {
        grid-template-columns: 1fr;
    }

    .podbor-quiz-actions .b-a-btn {
        width: 100%;
    }

    .home-service-centers {
        grid-template-columns: 1fr;
    }

    .home-b2b-content {
        padding: 28px 20px 0;
    }

    .commercial-hero-split {
        padding: 40px 0;
    }

    .home-link-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .home-link-grid {
        grid-template-columns: 1fr;
    }
}