/* ============================================
   DOCTORAMEN - Modern Typography Design
   Inspired by Pentagram & Humaan
   ============================================ */

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-grey-light: #f5f5f5;
    --color-grey: #e5e5e5;
    --color-grey-dark: #666666;
    --color-bg-1: #ffffff;
    --color-bg-2: #fafafa;
    --color-bg-3: #f0f0f0;
    --color-bg-4: #000000;
    --spacing-xs: 1rem;
    --spacing-sm: 1.5rem;
    --spacing-md: 3rem;
    --spacing-lg: 4rem;
    --spacing-xl: 5rem;
    --spacing-xxl: 6rem;
    --max-width: 1400px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

/* Skip to content link for accessibility */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: var(--color-black);
    background-color: var(--color-white);
    font-size: 20px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
    padding-top: 0;
    transition: padding-top 0.3s ease;
}

body.has-header {
    padding-top: 80px;
}

.container {
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 5rem;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    z-index: 1000;
    border-bottom: 1px solid var(--color-grey);
    padding: 1.5rem 0;
    transition: padding 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.header.scrolled {
    padding: 0.75rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5rem;
}

.logo a {
    display: block;
    text-decoration: none;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: height 0.3s ease;
    display: block;
}

.header.scrolled .logo-img {
    height: 35px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-black);
    font-weight: 400;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    transition: var(--transition);
    position: relative;
    display: block;
    padding: 0.25rem 0;
}

.nav-menu a:focus {
    outline: none;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-black);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-black);
    padding: 0.5rem;
    transition: var(--transition);
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
}

.menu-toggle:focus {
    outline: none;
}

.menu-toggle:hover {
    opacity: 0.7;
}

.hamburger-icon {
    width: 24px;
    height: 24px;
    transition: var(--transition);
}

.hamburger-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.line1 {
    transform-origin: 12px 6px;
}

.line2 {
    transform-origin: 12px 12px;
}

.line3 {
    transform-origin: 12px 18px;
}

.menu-toggle[aria-expanded="true"] .line1 {
    transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .line2 {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle[aria-expanded="true"] .line3 {
    transform: translateY(-6px) rotate(-45deg);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    height: calc(50vh - 80px);
    min-height: calc(500px - 80px);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--color-black);
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%;
    background-image: url('hero-image.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
    opacity: 0.95;
    will-change: transform;
    transition: transform 0.1s ease-out;
}

.hero-content {
    display: none;
}

.hero-title {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--color-white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.scroll-arrow {
    position: absolute;
    bottom: 4rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 4;
    color: var(--color-black);
    cursor: pointer;
    transition: var(--transition);
    animation: bounce 2s infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.scroll-arrow:hover {
    transform: translateX(-50%) translateY(5px);
}

.scroll-arrow:focus {
    outline: none;
}

.scroll-arrow svg {
    width: 40px;
    height: 50px;
    filter: drop-shadow(0 2px 4px rgba(255, 255, 255, 0.8));
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-8px);
    }
    60% {
        transform: translateX(-50%) translateY(-4px);
    }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--color-black);
}

h1 {
    font-size: 5rem;
    font-weight: 300;
    line-height: 1.1;
}

h2 {
    font-size: 3.5rem;
    font-weight: 300;
}

h3 {
    font-size: 2.5rem;
    font-weight: 300;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-black);
    font-weight: 300;
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.section-title strong {
    font-weight: 400;
}

.section-subtitle {
    font-size: 1.75rem;
    text-align: center;
    margin: var(--spacing-lg) auto var(--spacing-md);
    color: var(--color-black);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.4;
    max-width: 1000px;
}

.section-subtitle strong {
    font-weight: 400;
}

/* ============================================
   SECTIONS
   ============================================ */

section {
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   CHI SIAMO SECTION
   ============================================ */

.chi-siamo {
    background-color: var(--color-bg-1);
    color: var(--color-black);
}


.chi-siamo-title {
    font-size: 3.5rem;
    text-align: left;
    margin-bottom: var(--spacing-lg);
    margin-top: 0;
    color: var(--color-black);
    font-weight: 300;
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.chi-siamo-title strong {
    font-weight: 400;
}

.chi-siamo-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.chi-siamo-text {
    font-size: 1.35rem;
    text-align: left;
    line-height: 1.8;
    font-weight: 300;
}

.chi-siamo-text p {
    margin-bottom: var(--spacing-md);
    text-align: left;
    font-weight: 300;
}

.chi-siamo-text .intro {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.9;
    font-weight: 300;
}

.chi-siamo-text .intro strong {
    font-weight: 400;
}

.chi-siamo-text .location {
    font-weight: 300;
}

.chi-siamo-text strong {
    font-weight: 400;
}

.chi-siamo-image {
    width: 100%;
    height: auto;
    position: sticky;
    top: 0;
    align-self: start;
}

.chi-siamo-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* ============================================
   FULLSCREEN IMAGE SECTION
   ============================================ */

.fullscreen-image-section {
    width: 100%;
    padding: 0;
    margin: 0;
    background-color: var(--color-black);
    position: relative;
}

.fullscreen-image {
    width: 100%;
    height: 50vh;
    min-height: 400px;
    overflow: hidden;
    position: relative;
}

@media (min-width: 769px) {
    .fullscreen-image {
        height: 70vh;
        min-height: 500px;
    }
}

.fullscreen-image img {
    width: 100%;
    height: 120%;
    object-fit: cover;
    display: block;
    will-change: transform;
    transition: transform 0.1s ease-out;
    position: absolute;
    top: 0;
    left: 0;
}

/* ============================================
   COSA FACCIAMO SECTION
   ============================================ */

.cosa-facciamo {
    background-color: var(--color-bg-2);
    color: var(--color-black);
}

.cosa-facciamo-intro {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
    line-height: 1.8;
    font-weight: 300;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.cosa-facciamo p {
    margin-bottom: var(--spacing-md);
    text-align: center;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.35rem;
    line-height: 1.9;
    font-weight: 300;
}

.cosa-facciamo .section-title {
    margin-bottom: var(--spacing-md);
}

.stampa-tipi {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) auto;
    max-width: 1000px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.stampa-tipi li {
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--color-black);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    position: relative;
    padding: 0 var(--spacing-sm);
}

.stampa-tipi li:not(:last-child)::after {
    content: '●';
    position: absolute;
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-grey-dark);
    font-weight: 300;
    font-size: 0.5em;
}

.cosa-facciamo-gallery {
    margin-top: var(--spacing-xl);
    width: 100%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-item {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: var(--color-grey-light);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}


/* ============================================
   CLIENTI SECTION
   ============================================ */

.clienti {
    background-color: var(--color-bg-3);
    color: var(--color-black);
}

.clienti .section-title {
    margin-bottom: var(--spacing-sm);
}

.clienti-slider {
    width: 100%;
}

.clienti-slider-inner {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
}

.cliente-item {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    padding: 0;
    border: none;
    transition: var(--transition);
}

.cliente-item:hover {
    transform: translateY(-4px);
}

.cliente-item img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

.cliente-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* ============================================
   CONTATTI SECTION
   ============================================ */

.contatti {
    background-color: var(--color-bg-4);
    color: var(--color-white);
    text-align: center;
}

.contatti .section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.contatti-text {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.9;
    font-weight: 300;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contatti-text strong {
    font-weight: 400;
}

.contatti-buttons-wrapper {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.contatto-btn {
    display: inline-block;
    padding: 1.5rem 3rem;
    background-color: var(--color-white);
    color: var(--color-black);
    text-decoration: none;
    border-radius: 0;
    transition: var(--transition);
    font-size: 1.1rem;
    font-weight: 400;
    border: 1px solid var(--color-white);
    letter-spacing: 0.02em;
}

.contatto-btn:hover {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.contatto-btn:focus {
    outline: 3px solid var(--color-white);
    outline-offset: 3px;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--color-white);
    color: var(--color-grey-dark);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-grey);
}

.footer-copyright {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-grey-dark);
    font-weight: 300;
    letter-spacing: 0.02em;
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--color-black);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.back-to-top.visible {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-grey-dark);
    transform: translateY(-3px);
}

.back-to-top:focus {
    outline: 3px solid var(--color-white);
    outline-offset: 3px;
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    .container {
        padding: 0 3rem;
    }
    
    h1 {
        font-size: 4rem;
    }
    
    h2 {
        font-size: 3rem;
    }
    
    h3 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .chi-siamo-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    body.has-header {
        padding-top: 70px;
    }
    
    .hero {
        height: calc(50vh - 70px);
        min-height: calc(500px - 70px);
    }
    
    .container {
        padding: 0 2rem;
    }
    
    .header .container {
        padding: 0 2rem;
    }
    
    .header {
        padding: 1rem 0;
    }
    
    .header.scrolled {
        padding: 0.5rem 0;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .header.scrolled .logo-img {
        height: 30px;
    }
    
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        display: none;
        gap: 1.5rem;
    }

    .nav-menu.active {
        display: flex;
    }
    
    section {
        padding: var(--spacing-md) 0;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
        text-align: left;
    }
    
    .section-subtitle {
        font-size: 1.25rem;
        margin: var(--spacing-md) auto var(--spacing-sm);
    }
    
    .chi-siamo-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .chi-siamo-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .chi-siamo-image {
        position: static;
    }
    
    .chi-siamo-text {
        font-size: 1rem;
    }
    
    .chi-siamo-text p {
        margin-bottom: var(--spacing-sm);
    }
    
    .chi-siamo-text .intro {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .cosa-facciamo .section-title {
        margin-bottom: var(--spacing-xs);
    }
    
    .section-subtitle {
        text-align: left;
        margin: var(--spacing-xs) 0;
    }
    
    .cosa-facciamo-intro {
        font-size: 1.15rem;
        margin-bottom: var(--spacing-xs);
        text-align: left;
    }
    
    .cosa-facciamo p {
        font-size: 1rem;
        margin-bottom: var(--spacing-xs);
        text-align: left;
    }
    
    .stampa-tipi {
        flex-direction: column;
        gap: var(--spacing-xs);
        align-items: flex-start;
        margin: var(--spacing-sm) 0;
    }
    
    .stampa-tipi li {
        font-size: 1rem;
        padding-left: 0;
    }
    
    .stampa-tipi li::before {
        content: '—';
        margin-right: 0.5rem;
        font-size: 0.8em;
    }
    
    .stampa-tipi li:not(:last-child)::after {
        display: none;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }
    
    .cosa-facciamo-gallery {
        margin-top: var(--spacing-md);
    }
    
    .contatti {
        text-align: left;
    }
    
    .contatti .section-title {
        margin-bottom: var(--spacing-xs);
    }
    
    .contatti-text {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .fullscreen-image {
        height: 60vh;
        min-height: 400px;
    }
    
    .scroll-arrow {
        bottom: 2rem;
    }
    
    .scroll-arrow svg {
        width: 32px;
        height: 40px;
    }
    
    .contatti-buttons-wrapper {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
    
    .contatto-btn {
        padding: 1.25rem 1.5rem;
        font-size: 1rem;
        width: 100%;
        text-align: center;
    }
    
    .clienti-slider-inner {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xs);
    }
    
    .cliente-item {
        height: 100px;
        padding: 0;
    }
    
    .footer-copyright {
        text-align: left;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 18px;
        height: 18px;
    }
}

/* Desktop - Hero full height */
@media (min-width: 769px) {
    .hero {
        height: calc(100vh - 80px);
        min-height: calc(700px - 80px);
    }
}

/* ============================================
   FADE IN ANIMATION
   ============================================ */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}