/* ============================================
   STEFANO BORALI — GLOBAL STYLESHEET
   ============================================ */

/* --- VARIABLES --- */
:root {
    --color-primary: #0f1923;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-text: #1a202c;
    --color-text-secondary: #525d6e;
    --color-bg: #ffffff;
    --color-bg-alt: #f6f7f9;
    --color-bg-dark: #0f1923;
    --color-border: #e2e5ea;
    --color-white: #ffffff;
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'DM Sans', system-ui, sans-serif;
    --max-width: 1200px;
    --section-pad: 120px;
    --section-pad-mobile: 64px;
}

/* --- RESET --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }

/* ============ NAV ============ */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}
.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--color-primary);
    text-decoration: none;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}
.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a.active { color: var(--color-primary); font-weight: 600; }
.nav-cta {
    font-size: 14px !important;
    font-weight: 600 !important;
    color: var(--color-white) !important;
    background: var(--color-primary);
    padding: 10px 24px;
    border-radius: 8px;
    transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--color-accent) !important; }
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}
.nav-hamburger span {
    width: 24px; height: 2px;
    background: var(--color-primary);
    transition: all 0.3s;
}

/* ============ BUTTONS ============ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-white);
    background: var(--color-primary);
    padding: 16px 32px;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.25s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { background: var(--color-accent); transform: translateY(-1px); }
.btn-secondary {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 16px 8px;
    transition: color 0.2s;
}
.btn-secondary:hover { color: var(--color-primary); }
.btn-cta-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-white);
    padding: 18px 40px;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.25s;
}
.btn-cta-light:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,0,0,0.2); }

/* ============ SECTIONS ============ */
.section { padding: var(--section-pad) 32px; }
.section-alt { background: var(--color-bg-alt); }
.section-dark { background: var(--color-bg-dark); color: var(--color-white); }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-label {
    font-size: 13px; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--color-accent); margin-bottom: 16px;
    display: block;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 4vw, 46px);
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    font-weight: 400;
}
.section-dark .section-title { color: var(--color-white); }
.section-dark .section-label { color: rgba(255,255,255,0.3); }
.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 640px;
    line-height: 1.7;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.65); }
.section-center { text-align: center; }
.section-center .section-subtitle { margin: 0 auto; }

/* ============ HERO ============ */
.hero {
    padding-top: 72px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 45%; height: 100%;
    background: var(--color-bg-alt);
    z-index: 0;
}
.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 80px 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-content { max-width: 560px; }
.hero-label {
    font-size: 13px; font-weight: 600;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--color-accent); margin-bottom: 24px;
    display: inline-block;
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(40px, 5vw, 58px);
    line-height: 1.12;
    color: var(--color-primary);
    margin-bottom: 28px;
    letter-spacing: -0.02em;
    font-weight: 400;
}
.hero h1 em { font-style: italic; color: var(--color-accent); }
.hero-subtitle {
    font-size: 17px; line-height: 1.75;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}
.hero-ctas { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.hero-image { position: relative; }
.hero-image-frame {
    width: 100%;
    aspect-ratio: 4/5;
    background: var(--color-border);
    border-radius: 16px;
    overflow: hidden;
}
.hero-image-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-image-placeholder {
    width: 100%; height: 100%;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    background: linear-gradient(145deg, #1a365d, #2d3748);
    color: rgba(255,255,255,0.6);
    font-size: 14px; text-align: center; padding: 32px;
}
.hero-image-placeholder .placeholder-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.hero-image-caption {
    position: absolute;
    bottom: -12px; left: 24px;
    background: var(--color-white);
    padding: 12px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    font-size: 13px; font-weight: 500;
    color: var(--color-text-secondary);
}

/* ============ PAGE HERO (internal pages) ============ */
.page-hero {
    padding: 160px 32px 80px;
    background: var(--color-bg-alt);
}
.page-hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}
.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 54px);
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-weight: 400;
    letter-spacing: -0.02em;
}
.page-hero .page-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

/* ============ FILOSOFIA ============ */
.filosofia {
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
}
.filosofia-quote {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.45;
    color: var(--color-primary);
    margin-bottom: 24px;
    font-style: italic;
    font-weight: 400;
}
.filosofia-text {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ============ PROBLEM CARDS ============ */
.problems-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 56px;
}
.problem-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s;
}
.problem-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 32px rgba(37,99,235,0.08);
}
.problem-card-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--color-bg-alt);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; font-size: 22px;
}
.problem-card h3 {
    font-family: var(--font-display);
    font-size: 22px; color: var(--color-primary);
    margin-bottom: 12px; font-weight: 400;
}
.problem-card p {
    font-size: 15px; color: var(--color-text-secondary); line-height: 1.7;
}

/* ============ SERVICE CARDS ============ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 56px;
}
.service-card {
    padding: 48px 36px;
    background: var(--color-bg-alt);
    border-radius: 16px;
    transition: all 0.3s;
    border: 1px solid transparent;
}
.service-card:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.service-number {
    font-family: var(--font-display);
    font-size: 56px; color: var(--color-border);
    line-height: 1; margin-bottom: 24px;
}
.service-card h3 {
    font-family: var(--font-display);
    font-size: 24px; color: var(--color-primary);
    margin-bottom: 16px; font-weight: 400; line-height: 1.3;
}
.service-card p {
    font-size: 15px; color: var(--color-text-secondary); line-height: 1.75;
}

/* ============ SERVICE DETAIL (servizi page) ============ */
.service-detail {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 64px;
    padding: 64px 0;
    border-bottom: 1px solid var(--color-border);
}
.service-detail:last-child { border-bottom: none; }
.service-detail-label h3 {
    font-family: var(--font-display);
    font-size: 28px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 8px;
    position: sticky; top: 100px;
}
.service-detail-label .service-for {
    font-size: 14px; color: var(--color-accent);
    font-weight: 500;
}
.service-detail-content h4 {
    font-size: 15px; font-weight: 600;
    letter-spacing: 0.06em; text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-top: 32px; margin-bottom: 12px;
}
.service-detail-content h4:first-child { margin-top: 0; }
.service-detail-content p {
    font-size: 16px; line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* ============ LOGOS ============ */
.logos-grid {
    display: flex; flex-wrap: wrap;
    gap: 40px; align-items: center; justify-content: center;
    margin-top: 48px; padding: 0 40px;
}
.logo-item {
    font-family: var(--font-body);
    font-size: 16px; font-weight: 600;
    color: var(--color-text-secondary);
    opacity: 0.5; transition: opacity 0.3s;
    white-space: nowrap;
}
.logo-item:hover { opacity: 1; }
.logos-link { display: block; text-align: center; margin-top: 48px; }
.logos-link a {
    font-size: 15px; font-weight: 500;
    color: var(--color-accent); text-decoration: none;
}
.logos-link a:hover { color: var(--color-accent-hover); }

/* ============ LOGOS BY SECTOR (risultati page) ============ */
.sector-group { margin-bottom: 48px; }
.sector-group:last-child { margin-bottom: 0; }
.sector-title {
    font-family: var(--font-display);
    font-size: 22px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 16px;
}
.sector-logos {
    display: flex; flex-wrap: wrap; gap: 16px;
}
.sector-logo-item {
    font-size: 14px; font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-alt);
    padding: 8px 16px; border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* ============ PROCESS ============ */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px; margin-top: 56px;
}
.process-step-number {
    font-family: var(--font-display);
    font-size: 72px; color: rgba(255,255,255,0.08);
    line-height: 1; margin-bottom: 16px;
}
.process-step h3 {
    font-size: 18px; font-weight: 600;
    color: var(--color-white); margin-bottom: 12px;
}
.process-step p {
    font-size: 15px; color: rgba(255,255,255,0.55); line-height: 1.7;
}

/* ============ ABOUT PREVIEW ============ */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px; align-items: center;
}
.about-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.about-img {
    aspect-ratio: 3/4;
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-border);
}
.about-img:first-child { margin-top: 40px; }
.about-img img { width: 100%; height: 100%; object-fit: cover; }
.about-img-placeholder {
    width: 100%; height: 100%;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    font-size: 12px; color: var(--color-text-secondary);
    text-align: center; padding: 16px;
    background: linear-gradient(145deg, #e2e5ea, #f6f7f9);
}
.about-text h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 3.5vw, 40px);
    color: var(--color-primary);
    margin-bottom: 24px;
    font-weight: 400; line-height: 1.25;
}
.about-text p {
    font-size: 17px; color: var(--color-text-secondary);
    line-height: 1.8; margin-bottom: 20px;
}
.about-link {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 15px; font-weight: 600;
    color: var(--color-accent); text-decoration: none;
    margin-top: 16px; transition: gap 0.2s;
}
.about-link:hover { gap: 12px; }

/* ============ CHI SONO — STORY BLOCKS ============ */
.story-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 80px 0;
    border-bottom: 1px solid var(--color-border);
}
.story-block:last-of-type { border-bottom: none; }
.story-block.reverse { direction: rtl; }
.story-block.reverse > * { direction: ltr; }
.story-block-img {
    aspect-ratio: 4/3;
    border-radius: 16px;
    overflow: hidden;
    background: var(--color-border);
}
.story-block-img img { width: 100%; height: 100%; object-fit: cover; }
.story-block-text h2 {
    font-family: var(--font-display);
    font-size: clamp(26px, 3vw, 36px);
    color: var(--color-primary);
    font-weight: 400; margin-bottom: 20px;
    line-height: 1.25;
}
.story-block-text p {
    font-size: 16px; line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* ============ TIMELINE (chi-sono activities) ============ */
.timeline { max-width: 800px; margin: 0 auto; }
.timeline-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 48px;
    padding: 48px 0;
    border-bottom: 1px solid var(--color-border);
    align-items: start;
}
.timeline-item:last-child { border-bottom: none; }
.timeline-img {
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-border);
}
.timeline-img img { width: 100%; height: 100%; object-fit: cover; }
.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 24px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 12px;
}
.timeline-content p {
    font-size: 16px; line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ============ CASE STUDY ============ */
.case-study {
    padding: 56px 0;
    border-bottom: 1px solid var(--color-border);
}
.case-study:last-child { border-bottom: none; }
.case-study-sector {
    font-size: 13px; font-weight: 600;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--color-accent); margin-bottom: 12px;
}
.case-study h3 {
    font-family: var(--font-display);
    font-size: 28px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 24px;
}
.case-study-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.case-study-item label {
    display: block;
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}
.case-study-item p {
    font-size: 15px; line-height: 1.7;
    color: var(--color-text);
}

/* ============ CONTACT ============ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.contact-info h2 {
    font-family: var(--font-display);
    font-size: 32px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 20px;
}
.contact-info p {
    font-size: 17px; color: var(--color-text-secondary);
    line-height: 1.8; margin-bottom: 40px;
}
.contact-detail {
    margin-bottom: 24px;
}
.contact-detail-label {
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--color-text-secondary); margin-bottom: 4px;
}
.contact-detail a, .contact-detail span {
    font-size: 17px; color: var(--color-primary);
    text-decoration: none; font-weight: 500;
}
.contact-detail a:hover { color: var(--color-accent); }
.contact-cal {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 48px;
    text-align: center;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.contact-cal h3 {
    font-family: var(--font-display);
    font-size: 24px; color: var(--color-primary);
    font-weight: 400; margin-bottom: 12px;
}
.contact-cal p {
    font-size: 15px; color: var(--color-text-secondary);
    margin-bottom: 24px;
}

/* ============ CTA SECTION ============ */
.cta-section { text-align: center; }
.cta-section .section-title { color: var(--color-white); margin-bottom: 16px; }
.cta-section .section-subtitle { color: rgba(255,255,255,0.6); margin: 0 auto 40px; }
.cta-contacts {
    margin-top: 24px; font-size: 14px;
    color: rgba(255,255,255,0.45);
}
.cta-contacts a {
    color: rgba(255,255,255,0.65);
    text-decoration: none;
}
.cta-contacts a:hover { color: var(--color-white); }

/* ============ CERTIFICATIONS ============ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px; margin-top: 40px;
}
.cert-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}
.cert-item-category {
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--color-accent); margin-bottom: 12px;
}
.cert-item p {
    font-size: 14px; color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============ FOOTER ============ */
.footer {
    background: #080d12;
    padding: 64px 32px 40px;
    color: rgba(255,255,255,0.4);
    font-size: 14px;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 64px;
}
.footer-brand {
    font-family: var(--font-display);
    font-size: 20px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 8px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover { color: rgba(255,255,255,0.8); }
.footer-heading {
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: rgba(255,255,255,0.25); margin-bottom: 20px;
}
.footer-bottom {
    max-width: var(--max-width);
    margin: 48px auto 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex; justify-content: space-between;
    font-size: 13px;
}
.footer-bottom a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
}

/* ============ ANIMATIONS ============ */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============ MOBILE ============ */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: absolute;
        top: 72px; left: 0; right: 0;
        background: var(--color-bg);
        padding: 24px 32px;
        border-bottom: 1px solid var(--color-border);
        gap: 20px;
    }
    .hero::after { display: none; }
    .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 48px 24px; }
    .hero-image { order: -1; }
    .section { padding: var(--section-pad-mobile) 24px; }
    .page-hero { padding: 120px 24px 56px; }
    .problems-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    .about-preview { grid-template-columns: 1fr; gap: 40px; }
    .about-images { order: -1; }
    .story-block { grid-template-columns: 1fr; gap: 32px; }
    .story-block.reverse { direction: ltr; }
    .timeline-item { grid-template-columns: 120px 1fr; gap: 24px; }
    .service-detail { grid-template-columns: 1fr; gap: 24px; }
    .case-study-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 48px; }
    .certs-grid { grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 8px; }
}
@media (max-width: 600px) {
    .process-grid { grid-template-columns: 1fr; }
    .certs-grid { grid-template-columns: 1fr; }
    .timeline-item { grid-template-columns: 1fr; }
}