/* ==========================================
   FEINGARD - Premium Aluminium-Zäune
   Modern & Elegant Landing Page Styles
   ========================================== */

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Elegant Anthracite Theme */
    --primary: #2C3E50;
    --primary-dark: #1a252f;
    --accent: #C9A961;
    --accent-light: #d4b876;
    --anthracite: #3E4952;
    --anthracite-light: #5A6670;
    --silver: #B8C2CC;
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E8EAED;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --success: #10B981;
    --error: #EF4444;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 100px;
    --container-padding: 20px;
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* === NAVIGATION === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px var(--container-padding);
}

.logo img {
    height: auto;
    width: 200px;
    transition: var(--transition);
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:not(.nav-cta):after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-menu a:not(.nav-cta):hover:after {
    width: 100%;
}

.nav-menu a:not(.nav-cta):hover {
    color: var(--accent);
}

.nav-cta {
    background: var(--accent);
    color: var(--white) !important;
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary);
    cursor: pointer;
}

/* === HERO SECTION === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--anthracite) 100%);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.85) 0%, rgba(62, 73, 82, 0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 50px 0;
}

.hero-subtitle {
    font-size: 14px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
    font-weight: 500;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 25px;
}

.hero-title .highlight {
    color: var(--accent);
    position: relative;
    display: inline-block;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    max-width: 700px;
    margin: 0 auto 40px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border: none;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

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

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(50, 50, 50, 0.15);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

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

/* === SCROLL INDICATOR === */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* === TRUST BAR === */
.trust-bar {
    background: var(--white);
    padding: 40px 0;
    box-shadow: var(--shadow-md);
}

.trust-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 15px;
    justify-content: center;
}

.trust-item i {
    font-size: 32px;
    color: var(--accent);
}

.trust-item span {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-dark);
}

/* === SECTIONS === */
.section {
    padding: var(--section-padding) 0;
}

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

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* === ADVANTAGES SECTION === */
.advantages {
    background: var(--off-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: var(--white);
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.advantage-card:hover:before {
    transform: scaleX(1);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.advantage-card.featured {
    background: linear-gradient(135deg, var(--primary) 0%, var(--anthracite) 100%);
    color: var(--white);
}

.advantage-card.featured h3,
.advantage-card.featured p {
    color: var(--white);
}

.badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    box-shadow: var(--shadow-md);
}

.advantage-card.featured .advantage-icon {
    background: rgba(255, 255, 255, 0.2);
}

.advantage-icon i {
    font-size: 32px;
    color: var(--white);
}

.advantage-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
}

.advantage-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* === PRODUCT SHOWCASE === */
.product-showcase {
    background: var(--white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 60px;
    align-items: center;
}

.product-image .image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.product-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.product-image .image-container:hover img {
    transform: scale(1.05);
}

.image-badge {
    position: absolute;
    bottom: 25px;
    left: 25px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 25px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
}

.image-badge i {
    color: var(--accent);
    font-size: 18px;
}

.image-badge span {
    font-weight: 600;
    color: var(--primary);
}

.product-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
}

.product-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 35px;
}

.product-features {
    margin-bottom: 35px;
}

.feature-item {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.feature-item i {
    color: var(--accent);
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 3px;
}

.feature-item strong {
    display: block;
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.feature-item p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* === TECHNICAL SECTION === */
.technical-section {
    background: var(--off-white);
}

.technical-grid {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.technical-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.technical-card.reverse {
    direction: rtl;
}

.technical-card.reverse > * {
    direction: ltr;
}

.technical-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.technical-image img {
    width: 100%;
    height: auto;
    display: block;
}

.technical-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.technical-content h3 i {
    color: var(--accent);
    font-size: 28px;
}

.technical-content p {
    font-size: 1.05rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.technical-content ul {
    list-style: none;
    display: grid;
    gap: 12px;
}

.technical-content li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.technical-content li i {
    color: var(--accent);
    font-size: 18px;
}

/* === SPECIFICATIONS === */
.specifications {
    background: var(--white);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.spec-card {
    background: var(--off-white);
    padding: 30px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.spec-card:hover {
    background: var(--white);
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.spec-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.spec-icon i {
    font-size: 26px;
    color: var(--white);
}

.spec-info h4 {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-bottom: 5px;
    font-weight: 500;
}

.spec-info p {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}

/* === REFERENCE GALLERY === */
.reference-gallery {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.gallery-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.gallery-item img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(44, 62, 80, 0.95) 0%, rgba(44, 62, 80, 0.7) 60%, transparent 100%);
    padding: 30px 25px;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
    opacity: 1;
}

.gallery-overlay h3 {
    color: var(--white);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.gallery-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* === LIGHTBOX === */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    cursor: pointer;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 50px;
    color: #fff;
    font-size: 50px;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10000;
}

.lightbox-close:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-size: 60px;
    font-weight: bold;
    cursor: pointer;
    padding: 20px;
    user-select: none;
    transition: var(--transition);
    z-index: 10000;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--accent);
    transform: translateY(-50%) scale(1.2);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .lightbox img {
        max-width: 95%;
        max-height: 80vh;
    }
    
    .lightbox-close {
        top: 15px;
        right: 15px;
        font-size: 40px;
    }
    
    .lightbox-prev,
    .lightbox-next {
        font-size: 40px;
        padding: 10px;
    }
}

/* === PRICE PROMISE === */
.price-promise {
    background: linear-gradient(135deg, var(--primary) 0%, var(--anthracite) 100%);
    color: var(--white);
    text-align: center;
}

.promise-content {
    max-width: 900px;
    margin: 0 auto;
}

.promise-icon {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.promise-icon i {
    font-size: 50px;
    color: var(--accent);
}

.promise-content h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.promise-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

.promise-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.promise-features span {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 600;
}

.promise-features i {
    color: var(--accent);
}

/* === CONTACT SECTION === */
.contact-section {
    background: var(--off-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.contact-info > p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-benefits {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

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

.benefit i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 22px;
    flex-shrink: 0;
}

.benefit h4 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.benefit p {
    color: var(--text-gray);
}

/* === CONTACT FORM === */
.contact-form-container {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 15px;
    border: 2px solid var(--light-gray);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 16px;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

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

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

.checkbox-group input[type="checkbox"] {
    margin-top: 5px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group span {
    font-size: 0.9rem;
    color: var(--text-gray);
}

.form-message {
    padding: 15px;
    border-radius: 10px;
    font-weight: 600;
    text-align: center;
    display: none;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 2px solid var(--success);
    display: block;
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 2px solid var(--error);
    display: block;
}

/* === FOOTER === */
.footer {
    background: var(--primary);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    height: auto;
    width: 200px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    line-height: 1.6;
}

.footer-slogan {
    font-weight: 600;
    color: var(--accent) !important;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--accent);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

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

.footer-badges span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-badges i {
    color: var(--accent);
}

/* === SCROLL TO TOP === */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--accent-light);
    transform: translateY(-5px);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    :root {
        --section-padding: 70px;
    }
    
    .product-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .technical-card {
        grid-template-columns: 1fr;
        padding: 35px;
    }
    
    .technical-card.reverse {
        direction: ltr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 50px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 50px 0;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .trust-items {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .product-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: 30px 20px;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .contact-grid,
    .product-grid {
        grid-template-columns: 1fr;
        min-width: 100%;
    }
    
    .advantage-card,
    .technical-card,
    .contact-form-container {
        padding: 25px;
    }
}