/**
 * KERNWERK - Unified Styles
 * Металлическая мебель с инженерным характером
 * Общие стили для всех страниц сайта
 */

/* ========================================
   CSS Variables / Custom Properties
   ======================================== */
:root {
    --bg-primary: #141414;
    --bg-secondary: #1F1F1F;
    --bg-card: #1A1A1A;
    --text-primary: #E6E6E6;
    --text-secondary: #999999;
    --text-muted: #555555;
    --accent: #C89B65;
    --accent-hover: #D4A86F;
    --border: #333333;
    --grid-line: #2A2A2A;
}

/* ========================================
   Base Reset & Typography
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.mono {
    font-family: 'JetBrains Mono', monospace;
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(20,20,20,0.98);
    backdrop-filter: blur(10px);
}

.nav.scrolled {
    background: linear-gradient(to bottom, rgba(20,20,20,0.95) 0%, transparent 100%);
    transition: background 0.3s ease;
}

.logo {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.15em;
    color: var(--text-primary);
    text-decoration: none;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 12px 28px;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 1px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    padding: 18px 40px;
    font-family: 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========================================
   Page Headers & Hero Sections
   ======================================== */
.page-header {
    padding: 160px 60px 80px;
    background: var(--bg-secondary);
    text-align: center;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 25px;
}

.page-header p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.page-hero {
    padding: 160px 60px 80px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
    background-size: 100px 100px;
    opacity: 0.2;
}

.page-hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.page-hero h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 25px;
}

.page-hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 600px;
}

.hero-b2b {
    padding: 160px 60px 100px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.hero-b2b::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
    background-size: 100px 100px;
    opacity: 0.2;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-b2b h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 25px;
}

.hero-b2b p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 40px;
}

/* ========================================
   Labels & Section Headers
   ======================================== */
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
}

.section-header {
    margin-bottom: 80px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 1.2;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 400px;
    text-align: right;
}

/* ========================================
   Breadcrumbs
   ======================================== */
.breadcrumbs {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: var(--accent);
}

/* ========================================
   Filters & Buttons Group
   ======================================== */
.filters {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--accent);
    color: var(--accent);
}

.option-group {
    margin-bottom: 25px;
}

.option-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.option-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.option-btn {
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.option-btn:hover,
.option-btn.active {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========================================
   Product Cards
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.4s ease;
}

.product-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.product-image {
    aspect-ratio: 4/3;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 12px;
    background: var(--accent);
    color: var(--bg-primary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.product-info {
    padding: 25px;
}

.product-articul {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.product-name {
    font-family: 'Manrope', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.product-specs {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.spec {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--text-secondary);
}

.spec span {
    color: var(--text-muted);
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.product-price span {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.product-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.product-card:hover .product-btn {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========================================
   Portfolio Grid
   ======================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.portfolio-item {
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.portfolio-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.portfolio-item .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(to top, rgba(20,20,20,0.95) 0%, transparent 100%);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-overlay h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.portfolio-overlay p {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* ========================================
   Gallery
   ======================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-item {
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   Content Sections
   ======================================== */
.content-section {
    padding: 80px 60px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.content-image {
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.content-image .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

.content-text h2 {
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.content-text p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

/* ========================================
   Timeline
   ======================================== */
.timeline-section {
    padding: 80px 60px;
    background: var(--bg-secondary);
}

.timeline-section h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 60px;
}

.timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.timeline-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 18%;
    position: relative;
}

.timeline-dot {
    width: 60px;
    height: 60px;
    border: 1px solid var(--accent);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.timeline-item h4 {
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.timeline-item p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    padding: 80px 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h2 {
    font-size: 1.3rem;
    margin-bottom: 40px;
}

.contact-info h3 {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.contact-item {
    margin-bottom: 35px;
}

.contact-item .label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.contact-item .value {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.contact-item .value a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item .value a:hover {
    color: var(--accent);
}

.messengers {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.messenger-btn {
    padding: 15px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.messenger-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.map-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-container .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ========================================
   Forms
   ======================================== */
.form-section {
    padding: 100px 60px;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.form-container h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.form-container > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 50px;
}

.form-group {
    margin-bottom: 25px;
    text-align: left;
}

.form-group label {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-submit {
    width: 100%;
    padding: 18px;
    background: var(--accent);
    border: none;
    color: var(--bg-primary);
    font-family: 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    cursor: pointer;
    transition: background 0.3s ease;
}

.form-submit:hover {
    background: var(--accent-hover);
}

.form-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 20px;
}

.form-note a {
    color: var(--accent);
}

/* ========================================
   Cards (Audience, Benefits)
   ======================================== */
.audience-section,
.benefits-section {
    padding: 80px 60px;
}

.audience-section h2,
.benefits-section h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 50px;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.audience-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 35px;
    text-align: center;
    transition: all 0.3s ease;
}

.audience-card:hover {
    border-color: var(--accent);
}

.audience-icon {
    width: 50px;
    height: 50px;
    border: 1px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    color: var(--accent);
}

.audience-card h3 {
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.audience-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 35px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.benefit-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent);
    padding-top: 3px;
}

.benefit-content h3 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.benefit-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========================================
   CTA Sections
   ======================================== */
.cta-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 50px;
    text-align: center;
    margin-top: 60px;
}

.cta-block h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.cta-block p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.visit-section {
    padding: 80px 60px;
    background: var(--bg-secondary);
    text-align: center;
}

.visit-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.visit-section p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section {
    padding: 100px 60px;
    text-align: center;
}

.cta-section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Accordion
   ======================================== */
.accordion-section {
    padding: 60px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.section-title {
    font-size: 1.3rem;
    margin-bottom: 30px;
}

.accordion {
    max-width: 1000px;
}

.accordion-item {
    border-bottom: 1px solid var(--border);
}

.accordion-header {
    padding: 25px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: color 0.3s ease;
}

.accordion-header:hover {
    color: var(--accent);
}

.accordion-header h4 {
    font-size: 0.9rem;
}

.accordion-icon {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    color: var(--text-muted);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.accordion-content.open {
    max-height: 500px;
    padding-bottom: 25px;
}

.accordion-content p,
.accordion-content ul {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.accordion-content ul {
    list-style: none;
    padding-left: 0;
}

.accordion-content li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.accordion-content li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* ========================================
   Cross-sell Products
   ======================================== */
.cross-sell {
    padding: 60px;
}

.cross-sell-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.cross-sell-header h2 {
    font-size: 1.3rem;
}

.view-all {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.8rem;
    font-family: 'Manrope', sans-serif;
}

.products-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.mini-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.mini-card:hover {
    border-color: var(--accent);
}

.mini-image {
    aspect-ratio: 4/3;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mini-image .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    color: var(--text-muted);
}

.mini-info {
    padding: 20px;
}

.mini-name {
    font-family: 'Manrope', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.mini-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========================================
   Product Detail Page
   ======================================== */
.product-section {
    padding: 120px 60px 60px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    max-width: 1600px;
    margin: 0 auto;
}

.gallery {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.main-image {
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    position: relative;
}

.main-image .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.thumb {
    aspect-ratio: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.thumb:hover,
.thumb.active {
    border-color: var(--accent);
}

.thumb .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    color: var(--text-muted);
}

.product-details {
    padding-top: 20px;
}

.product-details .breadcrumbs {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 25px;
}

.product-details .breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
}

.product-details .breadcrumbs a:hover {
    color: var(--accent);
}

.product-details .product-articul {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.product-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 20px;
    line-height: 1.2;
}

.product-price-block {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border);
}

.price-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.product-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    color: var(--text-primary);
}

.product-price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.price-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

.trust-badges {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.badge-icon {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    color: var(--accent);
}

/* ========================================
   Case Study
   ======================================== */
.case-section {
    padding: 80px 60px;
    background: var(--bg-secondary);
}

.case-header {
    text-align: center;
    margin-bottom: 60px;
}

.case-header h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.case-header p {
    color: var(--text-secondary);
}

.case-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.case-image {
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

.case-content h3 {
    font-size: 1.2rem;
    margin-bottom: 25px;
    color: var(--accent);
}

.case-block {
    margin-bottom: 30px;
}

.case-block h4 {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.case-block p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* ========================================
   SEO Toggle
   ======================================== */
.seo-text {
    padding: 60px;
    border-top: 1px solid var(--border);
}

.seo-toggle {
    background: none;
    border: none;
    color: var(--accent);
    font-family: 'Manrope', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
}

.seo-content {
    margin-top: 30px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.9;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.seo-content.expanded {
    max-height: 500px;
}

/* ========================================
   About Page
   ======================================== */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
    height: 600px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-visual .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
}

.about-cross {
    position: absolute;
    width: 30px;
    height: 30px;
}

.about-cross::before,
.about-cross::after {
    content: '';
    position: absolute;
    background: var(--accent);
}

.about-cross::before {
    width: 30px;
    height: 1px;
    top: 50%;
}

.about-cross::after {
    width: 1px;
    height: 30px;
    left: 50%;
}

.cross-tl { top: -15px; left: -15px; }
.cross-br { bottom: -15px; right: -15px; }

.about-content h2 {
    margin-bottom: 30px;
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.9;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--accent);
    padding-top: 3px;
}

.feature-content h4 {
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========================================
   Requisites
   ======================================== */
.requisites {
    padding: 80px 60px;
    background: var(--bg-secondary);
    text-align: center;
}

.requisites h2 {
    font-size: 1.5rem;
    margin-bottom: 40px;
}

.requisites-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 50px;
    max-width: 600px;
    margin: 0 auto;
}

.requisites-card .mono {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 2;
}

/* ========================================
   Error 404 Page
   ======================================== */
.error-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    text-align: center;
}

.error-visual {
    width: 300px;
    height: 300px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 50px;
    position: relative;
}

.error-visual::before,
.error-visual::after {
    content: '';
    position: absolute;
    background: var(--accent);
    opacity: 0.3;
}

.error-visual::before {
    width: 100px;
    height: 1px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.error-visual::after {
    width: 1px;
    height: 100px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.error-visual .placeholder {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.error-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 5rem;
    font-weight: 400;
    color: var(--accent);
    margin-bottom: 20px;
    line-height: 1;
}

.error-section h1 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.error-section p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 400px;
}

/* ========================================
   Thank You Page
   ======================================== */
.thankyou-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    border: 1px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
}

.success-icon::after {
    content: '✓';
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    color: var(--accent);
}

.thankyou-section h1 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.thankyou-section > p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    max-width: 500px;
}

.response-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 50px;
}

.social-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 40px;
    max-width: 500px;
    width: 100%;
}

.social-block h3 {
    font-size: 0.9rem;
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.social-block p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.social-btn {
    padding: 12px 25px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.social-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.back-link {
    margin-top: 40px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--accent);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 60px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
    display: inline-block;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 300px;
}

.footer-column h4 {
    font-size: 0.75rem;
    margin-bottom: 25px;
    color: var(--text-secondary);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.footer-requisites {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .timeline::before {
        display: none;
    }
    
    .timeline-item {
        width: 45%;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .portfolio-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        height: 400px;
    }
    
    .product-section {
        grid-template-columns: 1fr;
        padding: 100px 40px 40px;
    }
    
    .gallery {
        position: relative;
        top: 0;
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 768px) {
    .nav {
        padding: 15px 20px;
    }
    
    .nav-cta {
        display: none;
    }
    
    .page-header {
        padding: 120px 20px 60px;
    }
    
    .page-hero {
        padding: 120px 20px 60px;
    }
    
    .hero-b2b {
        padding: 120px 20px 60px;
    }
    
    .content-section {
        padding: 60px 20px;
    }
    
    .timeline-section {
        padding: 60px 20px;
    }
    
    .gallery-section {
        padding: 60px 20px;
    }
    
    .requisites {
        padding: 60px 20px;
    }
    
    .contact-section {
        padding: 60px 20px;
    }
    
    .visit-section {
        padding: 60px 20px;
    }
    
    .audience-section {
        padding: 60px 20px;
    }
    
    .benefits-section {
        padding: 60px 20px;
    }
    
    .form-section {
        padding: 60px 20px;
    }
    
    .cta-section {
        padding: 60px 20px;
    }
    
    .accordion-section {
        padding: 40px 20px;
    }
    
    .cross-sell {
        padding: 40px 20px;
    }
    
    .catalog-section {
        padding: 40px 20px;
    }
    
    .case-section {
        padding: 60px 20px;
    }
    
    .error-section {
        padding: 40px 20px;
    }
    
    .thankyou-section {
        padding: 40px 20px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .products-row {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item.large {
        grid-column: span 1;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item.large {
        grid-column: span 1;
    }
    
    .timeline-item {
        width: 100%;
    }
    
    .filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
    }
    
    .cta-block {
        padding: 30px 20px;
    }
    
    .messengers {
        flex-direction: column;
    }
    
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .form {
        padding: 30px 20px;
    }
    
    .footer {
        padding: 40px 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .product-details {
        padding: 0;
    }
    
    .product-section {
        padding: 100px 20px 40px;
    }
    
    .trust-badges {
        flex-direction: column;
        gap: 15px;
    }
    
    .error-visual {
        width: 200px;
        height: 200px;
    }
    
    .error-code {
        font-size: 3.5rem;
    }
    
    .thankyou-section h1 {
        font-size: 1.5rem;
    }
    
    .social-block {
        padding: 30px 20px;
    }
    
    .social-links {
        flex-direction: column;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .section-desc {
        text-align: left;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
}

.animate-on-scroll.animated {
    animation: fadeInUp 0.8s ease forwards;
}