/* ===================================
   Global Styles & Reset
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3385d6;
    --secondary-color: #00a86b;
    --secondary-dark: #008556;
    --accent-color: #ff6b35;
    --dark-bg: #0a1628;
    --dark-bg-secondary: #152238;
    --light-bg: #f8fafc;
    --light-bg-secondary: #e2e8f0;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
    --border-color: #cbd5e1;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #004c99 100%);
    --gradient-secondary: linear-gradient(135deg, #00a86b 0%, #008556 100%);
    --gradient-hero: linear-gradient(135deg, rgba(10, 22, 40, 0.95) 0%, rgba(21, 34, 56, 0.9) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-base);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
}

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

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

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition-base);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

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

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

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: 
        var(--gradient-hero),
        url('https://sspark.genspark.ai/cfimages?u1=JYrXA34iIV7Xy8QDrnKGPNIBYS100hP0ywydJ9AQ2bErpLsa50wg6s12Ty9e36UaKoyAkxyAEZZYo0LNaapIVQAzXhNMIlakJ20EOzGrEJzPY9%2BpEZ46oHw1&u2=poxuwWyVgvyn3YFk&width=2560') center/cover no-repeat;
    color: var(--white);
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(10, 22, 40, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 20px;
    margin-top: 60px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 168, 107, 0.2);
    border: 1px solid var(--secondary-color);
    padding: 10px 20px;
    border-radius: 50px;
    margin-bottom: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.hero-badge i {
    color: var(--secondary-color);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #00e096 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 50px;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.hero-stat {
    padding: 20px;
}

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

.stat-label {
    font-size: 0.95rem;
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 4px;
    height: 10px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 0; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(8px); }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 168, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 168, 107, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.section-tag {
    display: inline-block;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--dark-bg);
    margin-bottom: 20px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-medium);
    max-width: 700px;
    margin: 0 auto;
}

/* ===================================
   Overview Section
   =================================== */
.overview {
    background: var(--light-bg);
}

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

.overview-content h3 {
    font-size: 2rem;
    color: var(--dark-bg);
    margin-bottom: 20px;
}

.overview-content > p {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 40px;
    line-height: 1.7;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

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

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

.feature-item h4 {
    font-size: 1.2rem;
    color: var(--dark-bg);
    margin-bottom: 8px;
}

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

.overview-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.overview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
    padding: 20px;
    font-size: 0.95rem;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.benefit-card {
    background: var(--white);
    padding: 35px 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

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

.benefit-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 168, 107, 0.1) 0%, rgba(0, 168, 107, 0.2) 100%);
    border-radius: 50%;
}

.benefit-icon i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.benefit-card h4 {
    font-size: 1.1rem;
    color: var(--dark-bg);
    margin-bottom: 12px;
}

.benefit-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.benefit-desc {
    font-size: 0.9rem;
    color: var(--text-medium);
    line-height: 1.5;
}

/* ===================================
   Technical Data Section
   =================================== */
.technical-data {
    background: var(--white);
}

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

.tech-card {
    background: var(--light-bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.tech-card-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.tech-card-header i {
    font-size: 1.8rem;
}

.tech-card-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.tech-card-body {
    padding: 25px;
}

.tech-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.tech-item:last-child {
    border-bottom: none;
}

.tech-label {
    font-size: 0.95rem;
    color: var(--text-medium);
}

.tech-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-bg);
}

/* ===================================
   Production Section
   =================================== */
.production {
    background: var(--light-bg);
}

.production-highlights {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

.production-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 25px;
    transition: var(--transition-base);
}

.production-card:hover {
    box-shadow: var(--shadow-xl);
}

.production-card.main {
    background: var(--gradient-primary);
    color: var(--white);
}

.prod-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.production-card.main .prod-icon {
    background: rgba(255, 255, 255, 0.2);
}

.production-card:not(.main) .prod-icon {
    background: linear-gradient(135deg, rgba(0, 168, 107, 0.1) 0%, rgba(0, 168, 107, 0.2) 100%);
}

.prod-icon i {
    font-size: 2.2rem;
}

.production-card.main .prod-icon i {
    color: var(--white);
}

.production-card:not(.main) .prod-icon i {
    color: var(--secondary-color);
}

.prod-content h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.production-card:not(.main) .prod-content h3 {
    color: var(--dark-bg);
}

.prod-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.production-card.main .prod-value {
    color: var(--secondary-color);
}

.production-card:not(.main) .prod-value {
    color: var(--primary-color);
}

.prod-detail {
    font-size: 0.95rem;
    opacity: 0.9;
}

.production-card:not(.main) .prod-detail {
    color: var(--text-medium);
}

/* Environmental Impact */
.environmental-impact {
    background: var(--white);
    padding: 50px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 40px;
}

.impact-title {
    text-align: center;
    font-size: 2rem;
    color: var(--dark-bg);
    margin-bottom: 40px;
}

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

.impact-card {
    text-align: center;
}

.impact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.impact-icon.co2 {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.2) 100%);
}

.impact-icon.so2 {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.1) 0%, rgba(251, 146, 60, 0.2) 100%);
}

.impact-icon.nox {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(168, 85, 247, 0.2) 100%);
}

.impact-icon.dust {
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.1) 0%, rgba(107, 114, 128, 0.2) 100%);
}

.impact-icon i {
    font-size: 2rem;
}

.impact-icon.co2 i { color: #ef4444; }
.impact-icon.so2 i { color: #fb923c; }
.impact-icon.nox i { color: #a855f7; }
.impact-icon.dust i { color: #6b7280; }

.impact-card h4 {
    font-size: 1.1rem;
    color: var(--dark-bg);
    margin-bottom: 15px;
}

.impact-values {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.impact-value {
    display: flex;
    flex-direction: column;
    padding: 12px;
    background: var(--light-bg);
    border-radius: 8px;
}

.value-number {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
}

.value-unit {
    font-size: 0.85rem;
    color: var(--text-medium);
    margin-top: 2px;
}

.impact-value.lifetime {
    background: var(--light-bg-secondary);
}

.impact-note {
    text-align: center;
    color: var(--text-medium);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.impact-note i {
    color: var(--secondary-color);
}

/* Energy Savings */
.energy-savings {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 50px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.savings-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.savings-icon {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.savings-icon i {
    font-size: 3rem;
}

.savings-text h3 {
    font-size: 1.8rem;
    margin-bottom: 25px;
}

.savings-values {
    display: flex;
    gap: 40px;
    margin-bottom: 20px;
}

.savings-value {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.savings-value .label {
    font-size: 0.95rem;
    opacity: 0.9;
}

.savings-value .value {
    font-size: 1.8rem;
    font-weight: 700;
}

.savings-note {
    font-size: 0.9rem;
    opacity: 0.85;
    font-style: italic;
}

/* ===================================
   Location Section
   =================================== */
.location {
    background: var(--white);
}

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.location-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.location-card {
    background: var(--light-bg);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.location-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.location-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.location-header i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.location-header h3 {
    font-size: 1.3rem;
    color: var(--dark-bg);
}

.location-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.location-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.location-item i {
    font-size: 1.3rem;
    color: var(--secondary-color);
    width: 30px;
    text-align: center;
}

.location-item > div {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.location-label {
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.location-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-bg);
}

.location-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 500px;
}

.location-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===================================
   Gallery Section
   =================================== */
.gallery {
    background: var(--light-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

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

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

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    opacity: 0;
    transition: var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    font-size: 2.5rem;
    color: var(--white);
}

.gallery-overlay p {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    padding: 0 20px;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 50px;
    color: var(--white);
    font-size: 3rem;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 10000;
}

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

.lightbox-content {
    max-width: 90%;
    max-height: 85%;
    object-fit: contain;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 1.2rem;
    background: rgba(0, 0, 0, 0.7);
    padding: 15px 30px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

/* ===================================
   Documents Section
   =================================== */
.documents {
    background: var(--white);
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.document-card {
    background: var(--light-bg);
    border-radius: 12px;
    padding: 40px;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 30px;
    transition: var(--transition-base);
}

.document-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.document-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1) 0%, rgba(220, 38, 38, 0.2) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.document-icon i {
    font-size: 2.5rem;
    color: #dc2626;
}

.document-content {
    flex: 1;
}

.document-content h3 {
    font-size: 1.3rem;
    color: var(--dark-bg);
    margin-bottom: 12px;
}

.document-desc {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 15px;
}

.document-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.document-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.document-card .btn {
    flex-shrink: 0;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--dark-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: 50px 0 30px;
}

.footer-content {
    text-align: center;
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 15px;
}

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

.footer-info p {
    font-size: 0.95rem;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.3rem;
    }
    
    .overview-grid,
    .location-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .technical-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid,
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .production-highlights {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--dark-bg);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 40px 0;
        gap: 15px;
        transition: var(--transition-base);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .technical-grid,
    .benefits-grid,
    .impact-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .savings-content {
        flex-direction: column;
        text-align: center;
    }
    
    .savings-values {
        flex-direction: column;
        gap: 20px;
    }
    
    .document-card {
        flex-direction: column;
        text-align: center;
    }
    
    .location-image {
        height: 300px;
    }
    
    .lightbox-close {
        top: 20px;
        right: 20px;
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.7rem;
    }
    
    .production-card {
        flex-direction: column;
        text-align: center;
    }
    
    .environmental-impact,
    .energy-savings {
        padding: 30px 20px;
    }
}