/* =========================================
   1. VARIABLES & RESET (The Construction Kit)
   ========================================= */
   :root {
    /* PALETTE KLAUS */
    --color-cyan: #6bc2df;      /* IL TUO BLU */
    --color-yellow: #FFEB3B;    /* Giallo Cantiere */
    --color-black: #000000;     /* Inchiostro Nero */
    --color-white: #FFFFFF;
    --color-gray: #F4F4F4;

    /* FONTS */
    --font-headline: 'Archivo Black', sans-serif; /* Pesante */
    --font-tech: 'Space Mono', monospace;         /* Tecnico */

    /* BRUTALIST UI RULES */
    --border-thick: 3px solid var(--color-black);
    --border-thin: 1px solid var(--color-black);
    --shadow-hard: 8px 8px 0px var(--color-black);
    --shadow-hover: 12px 12px 0px var(--color-black);
    
    /* SPACING */
    --section-padding: 100px 0;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-tech);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.5;
    border-left: var(--border-thick);  /* Cornice pagina sinistra */
    border-right: var(--border-thick); /* Cornice pagina destra */
    min-height: 100vh;
}

/* Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Background Helpers */
.bg-cyan { background-color: var(--color-cyan); }
.bg-yellow { background-color: var(--color-yellow); }
.bg-black { background-color: var(--color-black); }
.bg-white { background-color: var(--color-white); }
.text-white { color: var(--color-white); }
.text-cyan { color: var(--color-cyan); }
.text-yellow { color: var(--color-yellow); }

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-headline);
    text-transform: uppercase;
    line-height: 0.9;
    letter-spacing: -1px;
}

/* =========================================
   2. NAVBAR (Structural Grid)
   ========================================= */
.navbar {
    position: sticky;
    top: 0;
    background: var(--color-white);
    border-bottom: var(--border-thick);
    border-top: var(--border-thick);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    z-index: 1000;
}

.nav-brand {
    font-family: var(--font-headline);
    font-size: 2rem;
    letter-spacing: -2px;
}

.nav-links {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-links a {
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    position: relative;
}

.nav-links a:hover {
    background-color: var(--color-yellow); /* Evidenziatore */
}

.btn-nav {
    background: var(--color-black);
    color: var(--color-white);
    padding: 10px 20px;
    font-weight: bold;
}

.btn-nav:hover {
    background: var(--color-cyan);
    color: var(--color-black);
}

/* =========================================
   3. HERO SECTION
   ========================================= */
.hero {
    border-bottom: var(--border-thick);
    padding: 80px 0;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr; /* Testo grande, img piccola */
    gap: 60px;
    align-items: center;
}

.meta-tag {
    display: inline-block;
    border: 2px solid var(--color-black);
    padding: 5px 10px;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--color-white);
    box-shadow: 4px 4px 0px var(--color-black);
}

.hero h1 {
    font-size: 6rem; /* Gigantesco */
    margin-bottom: 30px;
}

.hero h1 span {
    padding: 0 10px;
    display: inline-block;
    transform: skew(-5deg); /* Leggermente inclinato */
    border: var(--border-thick);
}

.hero-sub {
    font-size: 1.2rem;
    max-width: 500px;
    margin-bottom: 40px;
    font-weight: 500;
}

/* Brutalist Buttons */
.btn-brutal-black {
    display: inline-block;
    background: var(--color-black);
    color: var(--color-white);
    padding: 18px 36px;
    font-family: var(--font-headline);
    font-size: 1.2rem;
    border: var(--border-thick); /* Bordo nero su nero */
    box-shadow: var(--shadow-hard); /* Ombra dura */
    transition: 0.2s;
    margin-right: 20px;
}

.btn-brutal-black:hover {
    transform: translate(-4px, -4px); /* Si alza */
    box-shadow: 12px 12px 0px var(--color-white); /* Ombra bianca su sfondo ciano */
    background: var(--color-yellow);
    color: var(--color-black);
}

.link-underline {
    font-weight: 700;
    text-decoration: underline;
    text-decoration-thickness: 3px;
}

.brutalist-frame img {
    width: 100%;
    height: auto;
    border: var(--border-thick);
    box-shadow: var(--shadow-hard);
    background-color: var(--color-white);
}

/* =========================================
   4. MARQUEE STRIP
   ========================================= */
.marquee-border {
    border-bottom: var(--border-thick);
    background: var(--color-yellow);
    overflow: hidden;
    padding: 15px 0;
}

.marquee-content {
    display: flex;
    white-space: nowrap;
    animation: scroll 20s linear infinite;
}

.marquee-content span {
    font-family: var(--font-headline);
    font-size: 2rem;
    margin-right: 40px;
    -webkit-text-stroke: 1px black; /* Outline text effect */
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* =========================================
   5. SECTIONS & SERVICES
   ========================================= */
.section-padding { padding: var(--section-padding); }

.grid-2-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.section-title {
    font-size: 5rem;
    line-height: 0.85;
}

.check-list li {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.check-list li::before {
    content: '■'; /* Bullet quadrato */
    color: var(--color-cyan);
    margin-right: 15px;
}

/* Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.border-thick { border: var(--border-thick); }

.service-card {
    background: var(--color-white);
    padding: 30px;
    position: relative;
    box-shadow: var(--shadow-hard);
    transition: 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    width: 60px;
    height: 60px;
    border: var(--border-thick);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-headline);
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.specs { margin-top: 20px; opacity: 0.7; }

/* =========================================
   6. PORTFOLIO GRID
   ========================================= */
.section-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 60px;
    border-bottom: var(--border-thick);
    padding-bottom: 20px;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.span-2 { grid-column: span 2; }

.project-img-wrap {
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-hard);
}

.project-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0, 0, 0, 1); /* Quick entrance */
    filter: grayscale(100%); /* Inizialmente B/N */
}

.project-img-wrap:hover img {
    transform: scale(1.05);
    filter: grayscale(0%); /* Colore all'hover */
}

/* Hover Overlay */
.overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    background: var(--color-white);
    border-top: var(--border-thick);
    border-right: var(--border-thick);
    padding: 15px 30px;
    opacity: 0;
    transform: translateY(100%);
    transition: 0.3s;
}

.project-img-wrap:hover .overlay {
    opacity: 1;
    transform: translateY(0);
}

.project-title {
    display: block;
    font-family: var(--font-headline);
    font-size: 1.5rem;
}

/* =========================================
   7. PROCESS & STATS
   ========================================= */
.process {
    border-top: var(--border-thick);
    border-bottom: var(--border-thick);
}

.process-steps {
    margin-top: 60px;
    display: flex;
    justify-content: space-between;
}

.step { flex: 1; padding-right: 30px; }

.step-divider {
    width: 2px;
    background: #333;
    margin: 0 20px;
}

.step-num {
    font-family: var(--font-headline);
    font-size: 3rem;
    display: block;
    margin-bottom: 10px;
}

.stats-bar {
    padding: 60px 0;
}

.stats-flex {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.stat-box .number {
    display: block;
    font-family: var(--font-headline);
    font-size: 4rem;
    line-height: 1;
}

.stat-box .label {
    font-weight: 700;
    letter-spacing: 1px;
}

/* =========================================
   8. FAQ (Accordion)
   ========================================= */
.accordion {
    background: var(--color-white);
    box-shadow: var(--shadow-hard);
}

details {
    padding: 30px;
    border-bottom: var(--border-thick);
    cursor: pointer;
}

details:last-child { border-bottom: none; }

summary {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    list-style: none;
    display: flex;
    justify-content: space-between;
}

summary::after {
    content: '+';
    font-weight: 400;
    transform: scale(1.5);
}

details[open] summary::after { content: '-'; }

details[open] { background-color: var(--color-gray); }

/* =========================================
   9. FOOTER
   ========================================= */
.footer {
    border-top: var(--border-thick);
}

.cta-huge {
    text-align: center;
    padding: 60px 0;
    border-bottom: var(--border-thick);
    margin-bottom: 60px;
}

.email-link {
    font-family: var(--font-headline);
    font-size: 8vw; /* Scala con lo schermo */
    color: var(--color-black);
    text-decoration: underline;
    line-height: 1;
}

.email-link:hover {
    color: var(--color-white);
    background-color: var(--color-black);
    text-decoration: none;
}

.footer-bottom {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    font-size: 1.1rem;
    font-weight: 700;
}

/* =========================================
   10. MOBILE & RESPONSIVE (Fully Optimized)
   ========================================= */

/* --- TABLET & SMALL LAPTOPS (1024px) --- */
@media (max-width: 1024px) {
    .hero h1 { font-size: 4.5rem; }
    .section-title { font-size: 3.5rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- MOBILE (768px) --- */
@media (max-width: 768px) {
    /* Reset Cornici Body */
    body {
        border-left: none;
        border-right: none;
    }

    .container { padding: 0 20px; }

    /* Navbar */
    .navbar { padding: 15px 20px; }
    .nav-links { display: none; } /* Menu a scomparsa (richiederebbe JS per toggle) */
    .nav-brand { font-size: 1.5rem; }

    /* Hero */
    .hero { padding: 40px 0; }
    .hero-grid { 
        grid-template-columns: 1fr; 
        gap: 40px; 
        text-align: center;
    }
    .hero h1 { font-size: 3.2rem; }
    .hero-sub { margin: 0 auto 30px; }
    .btn-brutal-black { 
        width: 100%; 
        margin-right: 0; 
        margin-bottom: 20px; 
    }

    /* Layout Grids */
    .grid-2-cols, 
    .services-grid, 
    .portfolio-grid { 
        grid-template-columns: 1fr; 
        gap: 30px; 
    }

    .span-2 { grid-column: span 1; } /* Reset span nel portfolio */

    /* Typography */
    .section-title { font-size: 3rem; }
    .check-list li { font-size: 1.1rem; }

    /* Process & Stats */
    .process-steps {
        flex-direction: column;
        gap: 30px;
    }
    .step { padding-right: 0; }
    .step-divider {
        width: 60px;
        height: 4px;
        background: var(--color-black);
        margin: 10px 0 20px 0;
    }

    .stats-flex {
        flex-direction: column;
        gap: 40px;
    }

    /* Portfolio Hover */
    .overlay {
        opacity: 1; /* Sempre visibile su mobile */
        transform: translateY(0);
        width: 100%;
        border-right: none;
    }

    /* Footer */
    .email-link { font-size: 7vw; }
    .footer-bottom {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 15px;
        padding-bottom: 30px;
    }
}

/* --- SMALL MOBILE (480px) --- */
@media (max-width: 480px) {
    .hero h1 { font-size: 2.8rem; }
    .hero h1 span { transform: none; border-width: 2px; } /* Meno aggressivo */
    
    .section-title { font-size: 2.5rem; }
    
    .service-card h4 { font-size: 1.5rem; }
    
    .stat-box .number { font-size: 3rem; }
    
    summary { font-size: 1.1rem; }
    
    /* Riduzione ombre per non "sporcare" lo schermo piccolo */
    .service-card, .btn-brutal-black, .project-img-wrap, .accordion {
        box-shadow: 5px 5px 0px var(--color-black);
    }
}