:root {
    --primary: #ff5500;
    --primary-light: #ff7733;
    --background: #0d0f14;
    --surface: rgba(255, 255, 255, 0.03);
    --surface-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 85, 0, 0.3);
    --text: #ffffff;
    --text-muted: #9ba1a6;
    --nav-height: 85px;
    
    --radius-sm: 12px;
    --radius-md: 24px;
    --radius-lg: 32px;
    --radius-pill: 100px;
    
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.4);
    
    --transition-fast: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

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

body {
    background-image: radial-gradient(circle at top right, rgba(255, 85, 0, 0.05), transparent 40%),
                      radial-gradient(circle at bottom left, rgba(255, 255, 255, 0.02), transparent 40%);
    background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--background);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

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

ul {
    list-style: none;
}

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

/* Layout Classes */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 120px 0;
}

.text-center { text-align: center; }
.highlight { color: var(--primary); }
.bg-darker { background-color: #080a0d !important; }
.d-flex { display: flex; }
.wrap { flex-wrap: wrap; }
.justify-between { justify-content: space-between; }
.align-start { align-items: flex-start; }
.col-4 { width: 35%; }
.col-7 { width: 60%; }

.underline {
    height: 3px;
    width: 50px;
    background: var(--primary);
    margin: 20px 0 40px;
    border-radius: var(--radius-pill);
    position: relative;
}

/* Glassmorphism Buttons */
.btn {
    display: inline-block;
    padding: 16px 36px;
    border-radius: var(--radius-pill);
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
    cursor: pointer;
    backdrop-filter: blur(10px);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 85, 0, 0.2);
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 85, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 45px;
    font-size: 1.1rem;
}

.btn-submit {
    width: 100%;
    background: var(--primary);
    color: #fff;
    border: none;
    margin-top: 15px;
}

/* Navbar (Glassmorphism) */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    transition: var(--transition-slow);
    background: rgba(13, 15, 20, 0);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled, .navbar.solid-bg {
    background: rgba(13, 15, 20, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-glass);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.6rem;
    font-family: 'Outfit', sans-serif;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.logo-img {
    height: 75px; 
    width: auto;
    filter: brightness(0) invert(1); /* Forces it to pure white */
    transition: var(--transition-fast);
}

.footer-col .logo-img {
    height: 60px;
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-muted);
    transition: var(--transition-fast);
    padding: 8px 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
    border-radius: 2px;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 25px;
    height: 2px;
    background: var(--text);
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    height: 100vh;
    background-color: #0d0f14;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(13, 15, 20, 0) 0%, #0d0f14 100%),
        radial-gradient(circle at 10% 20%, rgba(255, 85, 0, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
    background-size: 50px 50px, 50px 50px, 100% 100%, 100% 100%, 100% 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0, 0 0, 0 0, 0 0, 0 0; }
    100% { background-position: 50px 50px, 50px 50px, 0 0, 0 0, 0 0; }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
    background: rgba(20, 20, 25, 0.3);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    box-shadow: var(--shadow-glass);
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
    color: #fff;
    font-weight: 800;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--text-muted);
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Page Headers */
.page-header {
    height: 45vh;
    min-height: 350px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
}

.bg-services {
    background-color: #0d0f14;
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(255, 85, 0, 0.1) 0%, transparent 60%),
        repeating-linear-gradient(45deg, rgba(255,255,255,0.01) 0px, rgba(255,255,255,0.01) 2px, transparent 2px, transparent 15px);
}

.bg-contact {
    background-color: #0d0f14;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 85, 0, 0.1) 0%, transparent 60%),
        repeating-linear-gradient(-45deg, rgba(255,255,255,0.01) 0px, rgba(255,255,255,0.01) 2px, transparent 2px, transparent 15px);
}

.page-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(13, 15, 20, 0.8) 100%);
}

.page-content {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.05);
    padding: 30px 60px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    backdrop-filter: blur(12px);
}

.page-content h1 {
    font-size: 3.5rem;
    color: #fff;
    margin-bottom: 5px;
}

/* Features Glass Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 50px 30px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-slow);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

.feature-card:hover {
    transform: translateY(-8px);
    background: var(--surface-hover);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-hover);
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--primary);
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 30px;
    transition: var(--transition-fast);
}

.feature-card:hover .icon-wrapper {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: scale(1.05);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 500;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    position: relative;
    background: url('../immagini/Saldature_a_TIG_su_acciaio.webp') center/cover fixed;
    padding: 120px 0;
    text-align: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(13, 15, 20, 0.85);
    backdrop-filter: blur(10px);
}

.cta-content {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    padding: 60px;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    color: var(--text-muted);
}

/* Services Page specific */
.services-archive {
    padding: 80px 0;
}

.service-category {
    margin-bottom: 100px;
}

.service-header {
    text-align: center;
    margin-bottom: 50px;
}

.service-header h2 {
    font-size: 2.5rem;
    color: #fff;
    font-weight: 500;
}

.service-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 15px auto 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.gallery-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    position: relative;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    transition: var(--transition-fast);
}

.gallery-item:hover {
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
}

.image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 75%;
    overflow: hidden;
}

.gallery-img {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.gallery-item:hover .gallery-img {
    transform: scale(1.08);
}

.image-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(13, 15, 20, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

.image-overlay i {
    color: #fff;
    font-size: 2rem;
    transform: translateY(15px);
    transition: transform 0.4s ease;
}

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

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

/* Lightbox Modal (Glass) */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.visible {
    display: flex;
    opacity: 1;
}

.modal-content {
    max-width: 85%;
    max-height: 80vh;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border);
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.modal.visible .modal-content {
    transform: translateY(0);
}

#caption {
    margin-top: 20px;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.close-modal {
    position: absolute;
    top: 30px;
    right: 40px;
    color: #fff;
    font-size: 40px;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 2001;
    font-weight: 300;
}

.close-modal:hover {
    color: var(--primary);
    transform: scale(1.1);
}

/* Contact Page Form (Glassmorphism) */
.contact-info, .contact-form {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 60px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

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

.info-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.info-item h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
    font-weight: 500;
}

.info-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05);
}

.form-success {
    margin-top: 20px;
    padding: 16px;
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    border: 1px solid rgba(76, 175, 80, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}

.hidden { display: none; }

/* Map Placeholder */
.map-section {
    padding-bottom: 120px;
}
.map-placeholder {
    width: 100%;
    height: 400px;
    background: var(--surface);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}
.map-placeholder i {
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Footer */
footer {
    background: rgba(5, 5, 8, 0.95);
    padding: 80px 0 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col {
    flex: 1;
    min-width: 250px;
}

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

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 500;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.footer-col ul li a:hover {
    color: #fff;
}

.footer-col p {
    color: var(--text-muted);
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.footer-col p i {
    color: var(--primary);
    margin-right: 12px;
}

.footer-bottom {
    background: #000;
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Smooth Scroll Animations Start States */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-up.in-view {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
    transition-delay: var(--delay, 0s);
}
.slide-up.in-view {
    opacity: 1;
    transform: translateY(0);
}

.slide-right {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.slide-left {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.slide-right.in-view, .slide-left.in-view {
    opacity: 1;
    transform: translateX(0);
}

.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}
.fade-in.in-view {
    opacity: 1;
}

/* Responsive */
@media(max-width: 1024px) {
    .hero h1 { font-size: 3.5rem; }
    .hero-content, .cta-content { padding: 40px; }
    .col-4, .col-7 { width: 100%; }
    .contact-info { margin-bottom: 30px; }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media(max-width: 768px) {
    html {
        font-size: 14px; /* Global shrink effect for rem values */
    }

    .nav-menu {
        position: absolute;
        top: var(--nav-height);
        left: -100%;
        flex-direction: column;
        background: rgba(13, 15, 20, 0.95);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        padding: 30px 0;
        transition: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav-menu.active { left: 0; }

    .menu-toggle { display: flex; }

    .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
    .menu-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* Adjusted columns on mobile for better aesthetic */
    .grid-3 { grid-template-columns: 1fr; gap: 20px; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    
    .hero-content, .page-content, .cta-content { 
        margin: 0 15px; 
        padding: 30px 20px; 
        width: auto;
    }
    
    .hero-buttons { flex-direction: column; gap: 10px; }
    .btn { width: 100%; padding: 12px 20px; font-size: 1rem; }
    
    .contact-form, .contact-info { padding: 30px 20px; }
    .feature-card { padding: 40px 25px; }
    .icon-wrapper { width: 65px; height: 65px; font-size: 1.6rem; margin-bottom: 20px; }
    .section-padding { padding: 80px 0; }
}

/* Page Transition Effects */
body {
    opacity: 1;
    transition: opacity 0.5s ease;
}
body.page-transitioning {
    opacity: 0;
}