@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@700;800;900&display=swap');

:root {
    --primary-orange: #ff6b35;
    --primary-dark: #e85a28;
    --secondary-green: #2ebc4f;
    --accent-teal: #00b4d8;
    --dark-bg: #1a1a2e;
    --darker-bg: #16213e;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --text-dark: #0f1419;
    --text-gray: #5a6c7d;
    --text-light: #8b98a5;
    --border-light: #e5e7eb;
    --gradient-1: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-2: linear-gradient(135deg, #2ebc4f 0%, #00b4d8 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.18);
    --shadow-color: 0 8px 32px rgba(255, 107, 53, 0.25);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* HEADER - ULTRA PROFESSIONAL */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff6b35 0%, #f7931e 25%, #2ebc4f 50%, #00b4d8 75%, #ff6b35 100%);
    background-size: 200% 100%;
    animation: gradientShift 3s linear infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
}

header.scrolled::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(to bottom, rgba(0,0,0,0.05), transparent);
    pointer-events: none;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.2rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1001;
    position: relative;
    cursor: pointer;
    padding: 0.5rem 0;
}

.logo-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    filter: drop-shadow(0 4px 8px rgba(255, 107, 53, 0.15));
}

.logo:hover .logo-img {
    transform: scale(1.08) rotate(-8deg);
    filter: drop-shadow(0 8px 16px rgba(255, 107, 53, 0.3));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    position: relative;
    color: #0f1419;
}

.logo-text::before {
    content: 'IMM';
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 50%, #2ebc4f 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b35, #2ebc4f);
    transition: width 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border-radius: 2px;
}

.logo:hover .logo-text::after {
    width: 100%;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

nav a {
    color: #0f1419;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: block;
    letter-spacing: 0.3px;
}

nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
    border-radius: 12px;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, #ff6b35, #2ebc4f);
    border-radius: 2px;
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

nav a:hover {
    color: #ffffff;
    transform: translateY(-2px);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

nav a:hover::before {
    opacity: 1;
}

nav a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

nav a.active {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

nav a.active::after {
    transform: translateX(-50%) scaleX(1);
    background: white;
}

nav a:active {
    transform: translateY(-1px) scale(0.98);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
    padding: 0.625rem;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
    transition: all 0.3s ease;
}

.hamburger:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.hamburger span {
    width: 26px;
    height: 2.5px;
    background: white;
    margin: 3px 0;
    border-radius: 3px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.hamburger.active {
    background: linear-gradient(135deg, #2ebc4f 0%, #00b4d8 100%);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* HERO */
.hero {
    margin-top: 85px;
    min-height: 92vh;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.95) 0%, rgba(232, 90, 40, 0.95) 50%, rgba(46, 188, 79, 0.9) 100%),
                url('https://images.unsplash.com/photo-1556910103-1c02745aae4d?w=1600') center/cover;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    max-width: 1400px;
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.625rem 1.75rem;
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    animation: float 3s ease-in-out infinite;
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.hero p {
    font-size: 1.375rem;
    max-width: 750px;
    margin: 0 auto 3.5rem;
    opacity: 0.98;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 1.125rem 2.75rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.0625rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: white;
    color: var(--primary-orange);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-5px) scale(1.05);
}

/* SECTIONS */
section {
    padding: 3rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(46, 188, 79, 0.1) 100%);
    color: var(--primary-orange);
    padding: 0.625rem 1.75rem;
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 1.25rem;
    border: 2px solid rgba(255, 107, 53, 0.2);
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
    line-height: 1.2;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: var(--gradient-1);
    border-radius: 3px;
}

.section-subtitle {
    font-size: 1.1875rem;
    color: var(--text-gray);
    max-width: 750px;
    margin: 2rem auto 0;
    line-height: 1.8;
}

/* ABOUT */
#about {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: 550px;
    object-fit: cover;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.02);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -25px;
    left: -25px;
    right: 25px;
    bottom: 25px;
    background: var(--gradient-1);
    opacity: 0.15;
    border-radius: 30px;
    z-index: -1;
}

.about-content h3 {
    font-size: 1.75rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
    font-weight: 800;
}

.about-content p {
    font-size: 1.0625rem;
    color: var(--text-gray);
    line-height: 1.9;
    margin-bottom: 1.75rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
    margin: 2.5rem 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1.125rem;
    padding: 1.5rem;
    background: white;
    border-radius: 18px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
}

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

.feature-icon {
    width: 52px;
    height: 52px;
    background: var(--gradient-1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.625rem;
}

.feature-text h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.375rem;
}

.feature-text p {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin: 0;
}

/* SERVICES */
#services {
    background: white;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.875rem 2rem;
    background: white;
    border: 2px solid var(--border-light);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9375rem;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    transition: left 0.4s ease;
    z-index: -1;
}

.filter-btn:hover::before,
.filter-btn.active::before {
    left: 0;
}

.filter-btn:hover,
.filter-btn.active {
    color: white;
    border-color: transparent;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-color);
}

.products-container {
    position: relative;
    overflow: hidden;
    padding: 1rem 0;
}

.products-slider {
    display: flex;
    gap: 2rem;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card {
    flex: 0 0 calc(33.333% - 1.333rem);
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid var(--border-light);
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(255, 107, 53, 0.2);
}

.product-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.product-info {
    padding: 1.75rem;
}

.product-category {
    display: inline-block;
    background: var(--gradient-1);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.product-title {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 0.875rem;
}

.product-description {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.7;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 4rem;
}

.slider-btn {
    width: 56px;
    height: 56px;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.375rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-color);
}

.slider-btn:hover:not(:disabled) {
    transform: scale(1.15);
    box-shadow: 0 12px 40px rgba(255, 107, 53, 0.4);
}

.slider-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem;
}

.dot {
    width: 10px;
    height: 10px;
    background: var(--border-light);
    border-radius: 50%;
    transition: all 0.4s ease;
    cursor: pointer;
}

.dot:hover {
    background: var(--primary-orange);
}

.dot.active {
    background: var(--gradient-1);
    width: 32px;
    border-radius: 5px;
}

/* CONTACT */
#contact {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3.5rem;
}

.contact-form-container {
    background: white;
    padding: 3.5rem;
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
}

.contact-form-container h3 {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2.5rem;
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-dark);
    margin-bottom: 0.625rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.125rem 1.25rem;
    border: 2px solid var(--border-light);
    border-radius: 14px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    background: var(--light-bg);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
    background: white;
    box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.submit-btn {
    width: 100%;
    padding: 1.25rem;
    background: var(--gradient-1);
    color: white;
    border: none;
    border-radius: 14px;
    font-weight: 700;
    font-size: 1.0625rem;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-color);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 45px rgba(255, 107, 53, 0.4);
}

.success-message {
    display: none;
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    padding: 1.25rem;
    border-radius: 14px;
    margin-top: 1.25rem;
    text-align: center;
    font-weight: 600;
}

.certifications-container {
    background: white;
    padding: 3.5rem;
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
}

.certifications-container h3 {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2.5rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.cert-item {
    background: var(--light-bg);
    padding: 2rem 1.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    border: 2px solid var(--border-light);
}

.cert-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary-orange);
    box-shadow: var(--shadow-md);
}

.cert-item img {
    width: 110px;
    height: 110px;
    object-fit: contain;
    margin-bottom: 1.125rem;
}

.cert-item p {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-dark);
}

.contact-info {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05) 0%, rgba(46, 188, 79, 0.05) 100%);
    padding: 2rem;
    border-radius: 18px;
    border-left: 5px solid var(--primary-orange);
}

.contact-info h4 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
}

.contact-info p {
    font-size: 0.9375rem;
    color: var(--text-gray);
    line-height: 1.9;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-light);
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-color);
}

.social-links img {
    width: 22px;
    height: 22px;
}

/* FOOTER */
footer {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    color: white;
    padding: 5rem 2rem 2.5rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-1);
}

.footer-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3.5rem;
}

.footer-section h3, 
.footer-section h4 {
    font-weight: 800;
    margin-bottom: 1.75rem;
    font-size: 1.25rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.9;
}

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

.footer-section ul li {
    margin-bottom: 0.875rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
    padding-left: 10px;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 4rem; }
    .section-title { font-size: 2.75rem; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3.5rem; }
    .product-card { flex: 0 0 calc(50% - 1rem); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }
    
    nav ul {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 85%;
        max-width: 350px;
        background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
        flex-direction: column;
        justify-content: center;
        padding: 3rem 2rem;
        gap: 0.5rem;
        box-shadow: -10px 0 60px rgba(0, 0, 0, 0.15);
        transition: right 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        z-index: 999;
    }
    
    nav ul::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, #ff6b35, #2ebc4f);
    }
    
    nav ul.active { right: 0; }
    
    nav li { width: 100%; }
    
    nav a {
        width: 100%;
        text-align: center;
        padding: 1rem 1.5rem;
        font-size: 1.125rem;
        border-radius: 14px;
    }
    
    nav a::after {
        bottom: 6px;
        width: 40%;
    }
    
    .header-container { padding: 0.875rem 1.5rem; }
    .logo-img { width: 50px; height: 50px; }
    .logo-text { font-size: 1.25rem; }
    .hero { 
        margin-top: 75px; 
        min-height: 85vh; 
    }
    .hero h1 { font-size: 2.75rem; }
    .hero p { font-size: 1.125rem; }
    section { padding: 4rem 1.5rem; }
    .section-title { font-size: 2.25rem; }
    .about-image img { height: 350px; }
    .product-card { flex: 0 0 100%; }
    .cert-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
}

@media (max-width: 480px) {
    .header-container { padding: 0.75rem 1rem; }
    .logo-img { width: 45px; height: 45px; }
    .logo-text { font-size: 1.125rem; }
    nav ul { width: 90%; max-width: 300px; }
    .hero h1 { font-size: 2rem; }
    .section-title { font-size: 1.875rem; }
    .btn-primary, .btn-secondary { padding: 1rem 2rem; }
    .contact-form-container, .certifications-container { padding: 2rem 1.5rem; }
}