:root {
    --color-primary: #2c3e50;
    --color-secondary: #34495e;
    --color-accent: #3498db;
    --color-gold: #d4af37;
    --color-white: #ffffff;
    --color-light-gray: #f8f9fa;
    --color-medium-gray: #ecf0f1;
    --color-dark-gray: #7f8c8d;
    --color-text: #2c3e50;
    --color-text-light: #95a5a6;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.section-divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--color-primary), var(--color-accent));
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    padding: 0.5rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 60px;
    width: auto;
    transition: var(--transition);
}

.logo-text {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-primary);
    white-space: nowrap;
}

.logo:hover img {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    padding: 0.5rem 1rem;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 80%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('assets/glasfront_montage.jpg') center/cover no-repeat;
    opacity: 0.15;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(44, 62, 80, 0.7), rgba(44, 62, 80, 0.9));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: var(--spacing-md);
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-medium-gray);
    font-weight: 300;
}

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

.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark-gray);
    font-size: 1.1rem;
    text-align: justify;
    line-height: 1.8;
}

.about-text p:first-child::first-letter {
    font-size: 3.5rem;
    font-weight: bold;
    float: left;
    line-height: 1;
    margin-right: 0.5rem;
    color: var(--color-accent);
    font-family: var(--font-secondary);
}

.about-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.services {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--color-accent);
}

.service-icon {
    width: 100%;
    height: 200px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    border-radius: 8px;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.service-card:hover .service-icon img {
    transform: scale(1.1);
}

.service-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.service-card p {
    color: var(--color-dark-gray);
    line-height: 1.7;
}

.gallery {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.gallery-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    background: var(--color-white);
    color: var(--color-text);
    border: none;
    border-radius: 25px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    font-size: 0.95rem;
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
    background: var(--color-medium-gray);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    aspect-ratio: 4/3;
    transition: var(--transition);
}

.gallery-item.hide {
    display: none;
}

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(44, 62, 80, 0.9), transparent);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: var(--transition);
}

.gallery-overlay h4 {
    color: var(--color-white);
    font-size: 1.2rem;
}

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

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

.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    animation: zoomIn 0.3s ease;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: var(--color-white);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

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

.lightbox-caption {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-white);
    font-size: 1.2rem;
    text-align: center;
}

@keyframes zoomIn {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.contact {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.contact-intro {
    max-width: 700px;
    margin: var(--spacing-md) auto 0;
    color: var(--color-dark-gray);
    font-size: 1.1rem;
    text-align: center;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact-form-section {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-form-section h3 {
    color: var(--color-primary);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-secondary);
}

.contact-form-section > p {
    color: var(--color-dark-gray);
    line-height: 1.7;
    margin: 0;
}

.contact-info-compact {
    background: var(--color-light-gray);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--color-secondary);
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: 0.8rem;
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-item strong {
    color: var(--color-primary);
    min-width: 70px;
    font-size: 0.95rem;
}

.contact-info-item a {
    color: var(--color-accent);
    font-weight: 500;
    transition: var(--transition);
}

.contact-info-item a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.contact-buttons .btn {
    flex: 1;
    text-align: center;
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.contact-hours {
    padding: var(--spacing-md);
    background: var(--color-light-gray);
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
}

.contact-hours h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-hours p {
    color: var(--color-dark-gray);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.contact-hours p:last-child {
    margin-bottom: 0;
}

.contact-map {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    min-height: 400px;
}

.contact-map iframe {
    display: block;
    border: 0;
}

.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.footer-logo {
    text-align: center;
}

.footer-logo img {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    margin: 0 auto var(--spacing-sm);
}

.footer-logo h3 {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    color: var(--color-white);
    font-weight: 600;
}

.footer-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-section h4 {
    color: var(--color-gold);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.footer-section p {
    color: var(--color-medium-gray);
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
    line-height: 1.6;
}

.footer-section a {
    color: var(--color-medium-gray);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--color-white);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
}

.footer-bottom p {
    color: var(--color-medium-gray);
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .footer-info {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .logo-text {
        display: none;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: var(--color-white);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md) 0;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .gallery-filter {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-btn {
        width: 100%;
    }
    
    .contact-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media print {
    .header,
    .nav,
    .hero,
    .gallery-filter,
    .lightbox {
        display: none;
    }
    
    body {
        color: #000;
    }
    
    .section-title {
        color: #000;
    }
}