* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a4d72;
    --secondary-color: #1e3a5f;
    --accent-color: #e5b320;
    --text-dark: #2c3e50;
    --text-medium: #34495e;
    --text-light: #7f8c8d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #2c3e50;
    --border-light: #ecf0f1;
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 5px 25px rgba(0,0,0,0.15);
    --shadow-dark: 0 10px 40px rgba(0,0,0,0.2);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', serif;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow-light);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo .logo {
    height: 60px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 10px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 16px;
    padding: 10px 15px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-link:hover {
    color: var(--secondary-color);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-medium);
    border-radius: var(--border-radius);
    padding: 10px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--secondary-color);
}

.nav-contact {
    margin-left: 20px;
}

.nav-phone {
    background: var(--secondary-color);
    color: var(--bg-white);
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.nav-phone:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.hero {
    margin-top: 80px;
    padding: 120px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('Images/House Image.jpeg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
}

.hero-content {
    max-width: 800px;
    color: var(--bg-white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 10px;
    line-height: 1.1;
    font-family: var(--font-secondary);
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
}

.hero-subtitle {
    color: #e5b320;
    font-size: 2.5rem;
    font-weight: 600;
    display: block;
    margin-top: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.hero-tagline {
    font-size: 1.4rem;
    color: var(--bg-white);
    margin-bottom: 40px;
    font-weight: 400;
    line-height: 1.4;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    opacity: 0.95;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
    padding: 40px 0;
    max-width: 600px;
}

.stat-item {
    text-align: center;
    padding: 25px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.stat-text {
    font-size: 0.9rem;
    color: var(--text-dark);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: var(--secondary-color);
    color: var(--bg-white);
    border-color: var(--secondary-color);
}

.btn-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: transparent;
    color: var(--bg-white);
    border-color: var(--bg-white);
}

.btn-secondary:hover {
    background: var(--accent-color);
    color: var(--bg-white);
    border-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-full {
    width: 100%;
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-dark);
}

.key-features {
    padding: 80px 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--bg-white);
}

.feature-card:hover .feature-icon {
    background: var(--accent-color);
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-medium);
    line-height: 1.6;
}

.services {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    color: var(--primary-color);
    margin-bottom: 60px;
    font-weight: 700;
    font-family: var(--font-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    perspective: 1000px;
    height: 400px;
    position: relative;
    z-index: 1;
}

.service-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    cursor: pointer;
}

.service-card:hover .service-card-inner {
    transform: rotateY(180deg);
}

.service-card-front,
.service-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.service-card-back {
    transform: rotateY(180deg);
    padding: 30px;
    justify-content: flex-start;
}

.service-card:hover .service-card-front,
.service-card:hover .service-card-back {
    box-shadow: 0 25px 50px rgba(0,0,0,0.2);
}

.service-image {
    height: 240px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow: visible;
    margin-bottom: 20px;
}

.service-image img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    transition: all 0.4s ease;
}

.service-title {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 600;
    text-align: center;
}

.service-back-content {
    text-align: left;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 20px;
    overflow: hidden;
}

.service-back-content h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
    text-align: center;
    line-height: 1.2;
}

.service-subtitle {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 6px;
    text-align: center;
    line-height: 1.3;
}

.service-description {
    font-size: 0.8rem;
    color: var(--accent-color);
    font-style: italic;
    margin-bottom: 15px;
    text-align: center;
    line-height: 1.2;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
    overflow: hidden;
}

.service-features li {
    padding: 4px 0;
    color: var(--text-medium);
    position: relative;
    padding-left: 25px;
    font-size: 0.85rem;
    line-height: 1.3;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 6px;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 12px;
}

.service-content h3 {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.service-subtitle {
    font-size: 1.1rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.service-description {
    font-size: 1rem;
    color: var(--accent-color);
    font-style: italic;
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-medium);
    position: relative;
    padding-left: 25px;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 8px;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 14px;
}

.warranty {
    padding: 100px 0;
    background: var(--bg-white);
}

.warranty-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.warranty-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: 700;
    font-family: var(--font-secondary);
}

.warranty-highlight {
    font-size: 1.3rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 20px;
    font-style: italic;
}

.warranty-text p {
    font-size: 1.1rem;
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 30px;
}

.warranty-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.warranty-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.warranty-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.warranty-item span {
    font-weight: 600;
    color: var(--text-dark);
}

.warranty-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

.projects {
    padding: 100px 0;
    background: var(--bg-light);
}

.projects-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.tab-btn {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 2px solid var(--border-light);
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--secondary-color);
    color: var(--bg-white);
    border-color: var(--secondary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-dark);
}

.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--bg-white);
    padding: 30px 20px 20px;
    transform: translateY(70%);
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
}

.project-overlay h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.gallery-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-medium);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.about {
    padding: 100px 0;
    background: var(--bg-white);
}

.about-intro {
    font-size: 1.3rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 25px;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.value-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.value-item h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.value-item p {
    color: var(--text-medium);
    margin: 0;
}

.news {
    padding: 100px 0;
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.news-card {
    background: var(--bg-white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.news-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.news-date {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 15px;
    font-weight: 500;
}

.news-card p:last-child {
    color: var(--text-medium);
    line-height: 1.6;
    margin: 0;
}

.contact {
    padding: 100px 0;
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    font-weight: 600;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    width: 30px;
    flex-shrink: 0;
    margin-top: 5px;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 1.1rem;
}

.contact-item p {
    margin: 0;
    color: var(--text-medium);
    line-height: 1.5;
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
}

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

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 18px;
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
}

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

.footer {
    background: var(--bg-dark);
    color: var(--bg-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 50px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-info p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-contact p {
    color: #bdc3c7;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: var(--secondary-color);
    width: 16px;
}

.footer-services h4,
.footer-links h4,
.footer-warranty h4 {
    color: var(--bg-white);
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-services ul,
.footer-links ul {
    list-style: none;
}

.footer-services ul li,
.footer-links ul li {
    margin-bottom: 10px;
}

.footer-services a,
.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: var(--transition);
    font-size: 15px;
}

.footer-services a:hover,
.footer-links a:hover {
    color: var(--secondary-color);
}

.footer-warranty p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 20px;
}

.social-footer {
    display: flex;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    color: #95a5a6;
    font-size: 14px;
    line-height: 1.5;
}

@media (max-width: 1024px) {
    .hero-container {
        gap: 40px;
    }
    
    .hero-content {
        padding-right: 20px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.8rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-medium);
        padding: 20px 0;
        height: calc(100vh - 80px);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu .nav-item {
        margin: 15px 0;
        width: 100%;
    }

    .nav-menu .nav-link {
        justify-content: center;
        padding: 15px 20px;
        font-size: 18px;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--bg-light);
        margin-top: 10px;
    }

    .nav-contact {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero {
        background-attachment: scroll;
        padding: 100px 0;
        min-height: 60vh;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.8rem;
    }

    .hero-tagline {
        font-size: 1.2rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 400px;
        padding: 30px 0;
    }

    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        height: 350px;
    }
    
    .service-image {
        height: 160px;
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .service-image img {
        width: 120px;
        height: 120px;
    }
    
    .service-title {
        font-size: 1.2rem;
    }
    
    .service-back-content h3 {
        font-size: 1.2rem;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .about-values {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .projects-tabs {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 80px 0;
        min-height: 50vh;
        background-attachment: scroll;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .hero-stats {
        max-width: 300px;
        gap: 15px;
        padding: 25px 0;
    }

    .stat-item {
        padding: 20px 15px;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .services,
    .warranty,
    .projects,
    .about,
    .news,
    .contact {
        padding: 60px 0;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-text {
        font-size: 0.8rem;
    }
}

html {
    scroll-behavior: smooth;
}

section {
    scroll-margin-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23000" opacity="0.02"/><circle cx="75" cy="75" r="1" fill="%23000" opacity="0.02"/><circle cx="50" cy="50" r="0.5" fill="%23000" opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.service-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    border-radius: var(--border-radius);
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover::before {
    opacity: 0.1;
}

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

.hero-content,
.service-card,
.feature-card,
.news-card {
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }