@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

:root {
    --bg: #ffffff;
    --fg: #000000;
    --fg-muted: #666666;
    --border: #e5e5e5;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --container-max: 1440px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--fg);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, .serif {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.1;
}

.italic {
    font-style: italic;
}

/* Layout */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 100px 0;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: var(--fg);
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--fg);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    transition: opacity 0.2s;
}

nav a:hover {
    opacity: 0.5;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

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

.lang-toggle {
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    color: var(--fg);
}

.lang-toggle svg {
    transition: transform 0.2s;
}

.lang-selector.active .lang-toggle svg {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.25rem;
    display: flex;
    flex-direction: column;
    min-width: 60px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 1001;
}

.lang-selector.active .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-btn {
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem;
    text-align: center;
    color: var(--fg);
    opacity: 0.4;
    transition: opacity 0.2s, background 0.2s;
}

.lang-btn:hover {
    opacity: 1;
    background: #f5f5f5;
}

.lang-btn.active {
    opacity: 1;
    background: #f0f0f0;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--fg);
    color: var(--bg);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: background 0.2s;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn:hover {
    background: #333;
}

.btn-outline {
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--fg);
}

.btn-outline:hover {
    background: var(--fg);
    color: var(--bg);
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

/* Hero */
.hero {
    padding-top: calc(var(--header-height) + 60px);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content .eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 2rem;
    display: block;
}

.hero-content h1 {
    font-size: clamp(3rem, 5vw, 5rem);
    margin-bottom: 2rem;
}

.hero-content .subtitle {
    font-size: 1.25rem;
    color: var(--fg-muted);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-content .description {
    font-size: 1rem;
    margin-bottom: 3rem;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-motto {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.125rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.hero-visuals {
    position: relative;
}

.hero-main-img {
    width: 100%;
    height: 100%;
    background: #f0f0f0;
    object-fit: cover;
}

.hero-support-imgs {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.hero-support-img {
    width: 100%;
    height: 100%;
    background: #f0f0f0;
    object-fit: cover;
}

/* Section Problem */
.problem {
    background: var(--fg);
    color: var(--bg);
}

.problem h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
    max-width: 800px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.problem-card {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1.5rem;
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.problem-card p {
    font-size: 0.875rem;
    opacity: 0.7;
}

.problem-footer {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 4rem;
}

/* Cosa Facciamo */
.what h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
}

.service-block {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 6rem;
    margin-bottom: 12rem;
    align-items: center;
}

.service-block:nth-child(even) {
}


.service-content h3 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.service-content p {
    font-size: 1.25rem;
    color: var(--fg-muted);
    margin-bottom: 2rem;
}

.service-visuals {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-visuals .placeholder {
    aspect-ratio: 4/5;
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Come Lavoriamo */
.how {
    background: #fafafa;
}

.how h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.how-step {
    border-left: 1px solid var(--border);
    padding-left: 1.5rem;
}

.how-step h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.how-step p {
    font-size: 0.875rem;
    color: var(--fg-muted);
}

/* Demo Cases */
.demo h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
}

.case {
    margin-bottom: 100px;
}

.case-header {
    margin-bottom: 2rem;
}

.case-header h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.case-header span {
    font-size: 0.875rem;
    color: var(--fg-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.case-grid .placeholder {
    aspect-ratio: 4/5;
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.case-strip {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scrollbar-width: none;
}

.case-strip::-webkit-scrollbar {
    display: none;
}

.case-strip-img {
    flex: 0 0 calc(50% - 0.75rem);
    aspect-ratio: 16/9;
}

/* Risultato */
.result h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.result-item {
    padding: 2rem;
    border: 1px solid var(--border);
}

.result-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.result-item p {
    font-size: 0.875rem;
    color: var(--fg-muted);
}

/* Collaborare */
.collab h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 4rem;
}

.collab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.collab-card {
    padding: 3rem 2rem;
    border: 1px solid var(--fg);
    text-align: center;
}

.collab-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.collab-card p {
    font-size: 1rem;
    color: var(--fg-muted);
}

/* Final CTA */
.final-cta {
    background: var(--fg);
    color: var(--bg);
    text-align: center;
    padding: 150px 0;
}

.final-cta h2 {
    font-size: clamp(2.5rem, 5vw, 5rem);
    margin-bottom: 2rem;
}

.final-cta p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.8;
}

/* Footer */
footer {
    padding: 80px 0;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
}

.footer-brand .logo {
    display: block;
    margin-bottom: 1.5rem;
}

.footer-brand p {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.footer-info h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.footer-info p, .footer-info a {
    display: block;
    text-decoration: none;
    color: var(--fg);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    margin-top: 80px;
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--fg-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Desktop Layout Flipping */
@media (min-width: 1025px) {
    .service-block:nth-child(even) {
        grid-template-columns: 1.5fr 1fr;
    }
    .service-block:nth-child(even) .service-content {
        grid-column: 2;
        grid-row: 1;
    }
    .service-block:nth-child(even) .service-visuals {
        grid-column: 1;
        grid-row: 1;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .problem-grid, .how-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-block {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .service-visuals {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .service-visuals .placeholder:last-child {
        grid-column: span 2;
        width: 70%;
        margin: 0 auto;
    }

    .service-visuals .placeholder {
        overflow: visible;
    }

    .service-visuals .placeholder:not(:last-child)::after {
        display: none;
    }

    @keyframes bounce {
        0%, 20%, 50%, 80%, 100% {transform: translateX(-50%) translateY(0);}
        40% {transform: translateX(-50%) translateY(-10px);}
        60% {transform: translateX(-50%) translateY(-5px);}
    }
    
    .service-block:nth-child(even) .service-content,
    .service-block:nth-child(even) .service-visuals {
        grid-column: auto;
        grid-row: auto;
    }
    
    .result-grid, .collab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    header .container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.125rem;
    }

    header nav {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .header-actions {
        gap: 0.75rem;
    }

    .header-actions .btn {
        display: none;
    }
    
    .problem-grid, .how-grid, .result-grid, .collab-grid {
        grid-template-columns: 1fr;
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Animation for reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Placeholder Utility */
.placeholder {
    display: block;
    background: #f8f8f8;
    color: #000;
    position: relative;
    border: 1px solid #eee;
    overflow: hidden;
}

.placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.placeholder:hover img {
    transform: scale(1.05);
}