/* ===========================
   Reset e Variabili
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Palette Monocromatica Avanzata */
    --color-white: #FFFFFF;
    --color-snow: #FAFAFA;
    --color-light: #F0F0F0;
    --color-silver: #E5E5E5;
    --color-gray-light: #CCCCCC;
    --color-gray: #999999;
    --color-gray-dark: #666666;
    --color-charcoal: #3A3A3A;
    --color-black: #1A1A1A;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-display: 'Georgia', serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.6s ease;
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--color-charcoal);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ===========================
   Sidebar Navigation
   =========================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 280px;
    background-color: var(--color-black);
    color: var(--color-white);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    transition: transform var(--transition-normal);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.sidebar-logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 4px;
}

.sidebar-logo-img {
    height: 50px;
    width: auto;
}

.footer-logo-img {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

.sidebar-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.sidebar-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--color-white);
    transition: var(--transition-fast);
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-link {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-light);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
}

.sidebar-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background-color: var(--color-white);
    transform: scaleY(0);
    transition: var(--transition-normal);
}

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

.sidebar-link:hover::before,
.sidebar-link.active::before {
    transform: scaleY(1);
}

.sidebar-footer {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-dark);
}

.social-links-sidebar {
    display: flex;
    gap: var(--spacing-sm);
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-charcoal);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-icon:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-3px);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 2000;
    background-color: var(--color-black);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 8px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    transition: var(--transition-fast);
}

/* ===========================
   Main Content
   =========================== */
.main-content {
    margin-left: 280px;
    min-height: 100vh;
}

/* ===========================
   Hero Section Alternative
   =========================== */
.hero-alt {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-snow) 0%, var(--color-light) 100%);
    overflow: hidden;
}

.hero-alt::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, var(--color-silver) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
    transform: rotate(-15deg);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom right, transparent 40%, rgba(255,255,255,0.9) 100%);
}

.hero-content-alt {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-md);
}

.hero-label {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-black);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.hero-title-alt {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
    line-height: 1.1;
}

.hero-subtitle-alt {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.1em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-outline,
.btn-outline-white {
    padding: 1rem 2.5rem;
    border: 2px solid var(--color-black);
    color: var(--color-black);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition-normal);
    background-color: transparent;
    cursor: pointer;
}

.btn-outline:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-outline-white {
    border-color: var(--color-white);
    color: var(--color-white);
}

.btn-outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-filled {
    padding: 1rem 2.5rem;
    background-color: var(--color-black);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition-normal);
    border: 2px solid var(--color-black);
}

.btn-filled:hover {
    background-color: transparent;
    color: var(--color-black);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background-color: var(--color-gray);
    animation: scrollAnimation 2s infinite;
}

@keyframes scrollAnimation {
    0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
    50% { transform: scaleY(1); opacity: 1; }
}

/* ===========================
   Sections Alternative
   =========================== */
.section-alt {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background-color: var(--color-black);
    color: var(--color-white);
}

.container-alt {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-header-alt {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.section-number {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-light);
    line-height: 1;
}

.section-dark .section-number {
    color: var(--color-charcoal);
}

.section-title-alt {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 300;
    letter-spacing: 0.05em;
}

/* ===========================
   About Section
   =========================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.about-card {
    background-color: var(--color-snow);
    overflow: hidden;
    transition: var(--transition-normal);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-image {
    height: 400px;
    overflow: hidden;
}

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

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

.card-content {
    padding: var(--spacing-lg);
}

.card-content h3 {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.card-content p {
    line-height: 1.8;
    color: var(--color-gray-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-light);
    transition: var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-black);
    transform: translateY(-5px);
}

.feature-icon {
    width: 100%;
    height: 250px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

/* ===========================
   Values Section
   =========================== */
.values-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

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

.value-block.vision-block {
    grid-template-columns: 1fr 1fr;
}

.value-content {
    padding: var(--spacing-lg);
}

.value-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.value-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-white);
    color: var(--color-black);
    font-size: 2rem;
    font-weight: 700;
}

.value-content h3 {
    font-size: 2rem;
    font-weight: 400;
}

.value-content p {
    line-height: 1.8;
    color: var(--color-gray-light);
}

.value-image {
    height: 100%;
    min-height: 400px;
}

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

/* ===========================
   Product Showcase
   =========================== */
.product-showcase {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-light);
}

.product-showcase.reverse {
    grid-template-columns: 2fr 1fr;
}

.product-showcase.reverse .product-info {
    order: 2;
}

.product-showcase.reverse .product-gallery-alt {
    order: 1;
}

.product-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-gray);
    margin-bottom: var(--spacing-sm);
}

.product-name {
    font-size: 3rem;
    font-weight: 300;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.05em;
}

.product-tagline {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.product-description {
    line-height: 1.8;
    color: var(--color-gray-dark);
}

.product-gallery-alt {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.gallery-item-alt {
    overflow: hidden;
    aspect-ratio: 1;
}

.gallery-item-alt.main-item {
    grid-column: 1 / -1;
    aspect-ratio: 16/9;
}

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

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

/* ===========================
   Certifications
   =========================== */
.certifications-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.1rem;
    color: var(--color-gray-light);
}

.certifications-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.cert-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

.cert-card:hover {
    border-color: var(--color-white);
    transform: scale(1.05);
}

.cert-card img {
    max-height: 80px;
    width: auto;
}

.sustainability-box {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-charcoal);
    border-radius: 4px;
}

.sustainability-box h3 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: var(--spacing-md);
}

.sustainability-box p {
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-light);
}

/* ===========================
   Contact Section
   =========================== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-details-alt {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-group h3 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    line-height: 1.8;
}

.contact-item a {
    color: var(--color-black);
    font-weight: 600;
    transition: var(--transition-fast);
}

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

.contact-social-alt {
    margin-top: var(--spacing-md);
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.social-card {
    padding: var(--spacing-md);
    background-color: var(--color-snow);
    text-align: center;
    font-weight: 600;
    transition: var(--transition-normal);
}

.social-card:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: translateY(-5px);
}

/* ===========================
   Footer Alternative
   =========================== */
.footer-alt {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-xs);
}

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

.footer-copyright p {
    color: var(--color-gray);
    font-size: 0.85rem;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .main-content {
        margin-left: 0;
    }

    .about-grid,
    .product-showcase,
    .product-showcase.reverse,
    .value-block,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .product-showcase.reverse .product-info,
    .product-showcase.reverse .product-gallery-alt {
        order: initial;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-card {
        min-width: 100%;
    }

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

    .product-gallery-alt {
        grid-template-columns: 1fr;
    }

    .certifications-showcase {
        grid-template-columns: repeat(2, 1fr);
    }

    .social-grid {
        grid-template-columns: 1fr;
    }

    .section-header-alt {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .section-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .certifications-showcase {
        grid-template-columns: 1fr;
    }
}