/* ========================================
   VITRUM GLASS INDUSTRIES - STYLESHEET
   Professional Glass Manufacturing Website
   Theme: iGLASS-inspired Blue/Teal Glass Theme
   ======================================== */

/* CSS Variables - iGLASS Color Palette */
:root {
    --primary: #0ea5a9;
    --primary-dark: #0891b2;
    --primary-light: #06b6d4;
    --secondary: #0f766e;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --dark: #134e4a;
    --dark-bg: #042f2e;
    --light: #ffffff;
    --light-gray: #f0fdfa;
    --gray: #ccfbf1;
    --text-primary: #134e4a;
    --text-secondary: #5eead4;
    --shadow: 0 10px 40px rgba(14, 165, 169, 0.15);
    --shadow-hover: 0 20px 60px rgba(14, 165, 169, 0.25);
    --transition: all 0.3s ease;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans Pro', 'Segoe UI', sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--light);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

p { margin-bottom: 1rem; }

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

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

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

/* Section Styles */
section {
    padding: 100px 0;
}

.section-light {
    background-color: var(--light);
}

.section-dark {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark) 50%, var(--secondary) 100%);
    color: var(--light);
}

.section-gray {
    background: linear-gradient(180deg, var(--light-gray) 0%, var(--gray) 100%);
}

.section-dark h2,
.section-dark h3 {
    color: var(--light);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--accent);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(14, 165, 169, 0.1);
    transition: var(--transition);
}

.header.scrolled {
    padding: 10px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    font-size: 1.5rem;
    font-weight: bold;
    font-family: var(--font-heading);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
    list-style: none;
}

.nav-link {
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    padding: 5px 0;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

/* Language Selector */
.language-selector {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    color: var(--light);
    transition: var(--transition);
}

.language-btn:hover {
    background: var(--secondary);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--light);
    border-radius: 10px;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    overflow: hidden;
    z-index: 100;
}

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

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.language-option:hover {
    background: var(--light-gray);
}

.language-option.active {
    background: var(--primary);
    color: var(--light);
}

.language-flag {
    font-size: 1.2rem;
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    transition: var(--transition);
}

/* ========================================
   HERO SLIDESHOW SECTION
   ======================================== */

.hero-slider {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.8s ease;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.1);
    transition: transform 6s ease;
}

.slide.active .slide-bg {
    transform: scale(1);
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(4, 47, 46, 0.85) 0%, rgba(19, 78, 74, 0.75) 50%, rgba(15, 118, 110, 0.65) 100%);
    z-index: 1;
}

.slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(14, 165, 169, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 60% 80%, rgba(5, 150, 160, 0.2) 0%, transparent 40%);
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    height: 100vh;
    display: flex;
    align-items: center;
}

.slide-content .container {
    width: 100%;
}

.hero-content {
    max-width: 700px;
}

.slide-badge {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid var(--accent);
    border-radius: 30px;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease forwards;
}

.slide-title {
    font-size: 3.5rem;
    color: var(--light);
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.slide-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

/* Slide Navigation Arrows */
.slide-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.slide-nav:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.slide-nav svg {
    width: 24px;
    height: 24px;
    color: var(--light);
}

.slide-prev {
    left: 30px;
}

.slide-next {
    right: 30px;
}

/* Slide Indicators */
.slide-indicators {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
}

.slide-indicator {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.slide-indicator.active,
.slide-indicator:hover {
    background: var(--accent);
    transform: scale(1.3);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.6);
    animation: bounce 2s infinite;
    z-index: 10;
}

.scroll-indicator span {
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-indicator svg {
    width: 24px;
    height: 24px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--light);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: var(--light);
    color: var(--dark);
    border-color: var(--light);
    transform: translateY(-3px);
}

/* ========================================
   ABOUT SECTION
   ======================================== */

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

.about-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: 15px;
    bottom: 15px;
    border: 3px solid var(--primary);
    border-radius: 20px;
    z-index: -1;
}

.about-image::after {
    content: '';
    position: absolute;
    bottom: 20px;
    right: -20px;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 20px;
    z-index: -1;
    opacity: 0.3;
}

.about-content h2 {
    margin-bottom: 25px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 25px 15px;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--gray) 100%);
    border-radius: 15px;
    border: 1px solid rgba(14, 165, 169, 0.2);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========================================
   PRODUCTS SECTION
   ======================================== */

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

.product-card {
    background: var(--light);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.product-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(14, 165, 169, 0.9) 0%, rgba(6, 182, 212, 0.7) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay svg {
    width: 60px;
    height: 60px;
    color: var(--light);
}

.product-content {
    padding: 25px;
}

.product-content h3 {
    margin-bottom: 10px;
    color: var(--dark);
    font-size: 1.3rem;
}

.product-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
}

.product-link:hover {
    gap: 15px;
    color: var(--secondary);
}

/* ========================================
   SERVICES SECTION
   ======================================== */

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

.service-card {
    background: var(--light);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
    transform: scaleX(0);
    transition: var(--transition);
}

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

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

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--gray) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--light);
    transform: scale(1.1);
}

.service-card h3 {
    margin-bottom: 15px;
    color: var(--dark);
    font-size: 1.2rem;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ========================================
   QUALITY SECTION
   ======================================== */

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

.quality-features {
    display: grid;
    gap: 25px;
}

.quality-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.quality-feature:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

.quality-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;
    font-size: 1.5rem;
    color: var(--dark);
    flex-shrink: 0;
}

.quality-text h4 {
    color: var(--light);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.quality-text p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
    font-size: 0.95rem;
}

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

.cert-badge {
    padding: 25px 35px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    text-align: center;
    color: var(--light);
    min-width: 160px;
    transition: var(--transition);
}

.cert-badge:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    border-color: var(--accent);
}

.cert-badge span {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 5px;
}

/* ========================================
   CONTACT SECTION
   ======================================== */

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

.contact-info h3 {
    margin-bottom: 20px;
    color: var(--dark);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--dark);
}

.contact-details p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

.contact-form {
    background: var(--light);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(14, 165, 169, 0.2);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--gray);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--light-gray);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 169, 0.1);
    background: var(--light);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--light);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.form-submit:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary) 100%);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(14, 165, 169, 0.3);
}

/* Form Messages */
.form-message {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: none;
}

.form-message.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #34d399;
}

.form-message.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #f87171;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark) 100%);
    color: var(--light);
    padding: 60px 0 30px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
}

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

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

.footer-brand .logo-text {
    color: var(--light);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    transition: var(--transition);
    border: 1px solid transparent;
}

.social-link:hover {
    background: var(--primary);
    border-color: var(--accent);
    transform: translateY(-3px);
}

.footer-column h4 {
    color: var(--light);
    font-size: 1.1rem;
    margin-bottom: 25px;
    position: relative;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 10px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ========================================
   ANIMATIONS
   ======================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
    .slide-title {
        font-size: 2.8rem;
    }
    
    .slide-nav {
        width: 45px;
        height: 45px;
    }
    
    .slide-prev {
        left: 15px;
    }
    
    .slide-next {
        right: 15px;
    }
    
    .products-grid,
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .slide-title {
        font-size: 2rem;
    }
    
    section { padding: 60px 0; }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--light);
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .slide-content {
        padding-top: 80px;
    }
    
    .slide-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .slide-nav {
        display: none;
    }
    
    .slide-indicators {
        bottom: 80px;
    }
    
    .about-grid,
    .quality-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-column h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .language-dropdown {
        right: -50px;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    .slide-title {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 15px;
    }
    
    .certifications {
        justify-content: center;
    }
    
    .contact-form {
        padding: 25px;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }
.mt-5 { margin-top: 50px; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }
.mb-5 { margin-bottom: 50px; }