/* ============================================
   PIETRO AVOGADRO — Sito Vetrina Professionale
   Palette: Carta e Acciaio
   Bianco puro · Grigio antracite · Blu Navy #1a2e4a
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
    --color-white:        #ffffff;
    --color-bg:           #fafafa;
    --color-bg-alt:       #f4f4f2;
    --color-navy:         #1a2e4a;
    --color-navy-light:   #2a4066;
    --color-navy-dark:    #111e30;
    --color-anthracite:   #2d2d2d;
    --color-gray-dark:    #4a4a4a;
    --color-gray-mid:     #7a7a7a;
    --color-gray-light:   #c8c8c8;
    --color-gray-ultra:   #ebebeb;
    --color-accent:       #1a2e4a;
    --color-accent-hover: #2a4066;

    --font-serif:   'Cormorant Garamond', Georgia, serif;
    --font-sans:    'Inter', system-ui, sans-serif;

    --size-xs:   0.75rem;
    --size-sm:   0.875rem;
    --size-base: 1rem;
    --size-md:   1.125rem;
    --size-lg:   1.25rem;
    --size-xl:   1.5rem;
    --size-2xl:  2rem;
    --size-3xl:  2.75rem;
    --size-4xl:  3.5rem;
    --size-5xl:  4.5rem;

    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  16px;
    --radius-xl:  24px;
    --radius-full: 9999px;

    --shadow-sm:  0 1px 3px rgba(26,46,74,0.08);
    --shadow-md:  0 4px 16px rgba(26,46,74,0.10);
    --shadow-lg:  0 8px 32px rgba(26,46,74,0.14);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1100px;
    --nav-height: 72px;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    color: var(--color-anthracite);
    background-color: var(--color-white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.15;
    color: var(--color-navy);
}

h1 { font-size: var(--size-5xl); }
h2 { font-size: var(--size-3xl); }
h3 { font-size: var(--size-xl); }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; color: var(--color-navy); }

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

/* ===== SECTION ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: var(--size-xs);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-navy);
    margin-bottom: 16px;
    position: relative;
    padding: 0 20px;
}

.section-label::before,
.section-label::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40px;
    height: 1px;
    background: var(--color-navy);
    opacity: 0.3;
}
.section-label::before { right: 100%; }
.section-label::after  { left:  100%; }

.section-label.light { color: rgba(255,255,255,0.7); }
.section-label.light::before,
.section-label.light::after { background: rgba(255,255,255,0.4); }

.section-title {
    font-size: var(--size-3xl);
    color: var(--color-navy);
}

.section-title.light { color: var(--color-white); }

.section-intro {
    font-size: var(--size-md);
    color: var(--color-gray-dark);
    max-width: 600px;
    margin: 20px auto 0;
    line-height: 1.8;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: var(--size-sm);
    font-weight: 500;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all var(--transition);
    border: 1.5px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-navy);
    color: var(--color-white);
    border-color: var(--color-navy);
}
.btn-primary:hover {
    background: var(--color-navy-light);
    border-color: var(--color-navy-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-navy);
    border-color: var(--color-navy);
}
.btn-outline:hover {
    background: var(--color-navy);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-reviews {
    background: var(--color-white);
    color: var(--color-navy);
    border-color: var(--color-gray-ultra);
    box-shadow: var(--shadow-sm);
    font-size: var(--size-sm);
    padding: 12px 28px;
}
.btn-reviews:hover {
    border-color: var(--color-navy);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.btn-reviews i { color: #ea4335; font-size: 1rem; }

/* ============================================
   NAVBAR
   ============================================ */
#header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    transition: background var(--transition), box-shadow var(--transition);
}

#header.scrolled {
    background: rgba(255,255,255,0.97);
    box-shadow: 0 1px 0 rgba(26,46,74,0.08), var(--shadow-sm);
    backdrop-filter: blur(8px);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-name {
    font-family: var(--font-serif);
    font-size: var(--size-lg);
    font-weight: 500;
    color: var(--color-navy);
    letter-spacing: 0.01em;
}

.logo-divider {
    display: block;
    width: 1px;
    height: 20px;
    background: var(--color-gray-light);
}

.logo-title {
    font-family: var(--font-sans);
    font-size: var(--size-xs);
    font-weight: 400;
    color: var(--color-gray-mid);
    letter-spacing: 0.04em;
}

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

.nav-link {
    font-size: var(--size-sm);
    font-weight: 500;
    color: var(--color-gray-dark);
    letter-spacing: 0.03em;
    position: relative;
    padding-bottom: 2px;
    transition: color var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 1.5px;
    background: var(--color-navy);
    transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-navy);
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: var(--color-navy);
    transition: all var(--transition);
    transform-origin: center;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--nav-height);
    background: var(--color-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 50%;
    height: 100%;
    background: var(--color-bg);
    z-index: 0;
}

.hero-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    font-size: var(--size-xs);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-gray-mid);
    margin-bottom: 20px;
}

.hero-name {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 300;
    color: var(--color-navy);
    line-height: 1.05;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.hero-tagline {
    font-family: var(--font-serif);
    font-size: var(--size-xl);
    font-weight: 400;
    color: var(--color-gray-dark);
    font-style: italic;
    margin-bottom: 12px;
}

.hero-subtitle {
    font-size: var(--size-sm);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-gray-mid);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    position: relative;
}

/* Hero Photo — immagine reale */
.hero-photo-wrapper {
    width: 300px;
    height: 380px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
    background: var(--color-gray-ultra);
}

.hero-photo-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 4px;
    background: var(--color-navy);
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    transition: transform 0.6s ease;
}

.hero-photo-wrapper:hover .hero-photo {
    transform: scale(1.03);
}

.hero-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-navy);
    color: var(--color-white);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-size: var(--size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-md);
    position: absolute;
    bottom: 20px;
    right: -10px;
}

.badge-icon { font-size: 1rem; }

/* Hero Scroll */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-gray-light);
    font-size: var(--size-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: bounce 2s infinite;
    z-index: 2;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-text p {
    font-size: var(--size-base);
    color: var(--color-gray-dark);
    line-height: 1.9;
}

.about-lead {
    font-size: var(--size-md) !important;
    color: var(--color-anthracite) !important;
    font-weight: 400;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-navy);
    transition: box-shadow var(--transition);
}

.highlight-card:hover {
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    width: 36px;
    height: 36px;
    background: var(--color-navy);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.highlight-card strong {
    display: block;
    font-size: var(--size-sm);
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 2px;
}

.highlight-card p {
    font-size: var(--size-xs);
    color: var(--color-gray-mid);
    margin: 0;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    position: relative;
    transition: all var(--transition);
    border: 1px solid var(--color-gray-ultra);
    cursor: default;
    outline: none;
}

.service-card:hover,
.service-card:focus {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.service-card:focus {
    box-shadow: 0 0 0 3px rgba(26,46,74,0.2), var(--shadow-lg);
}

.service-number {
    font-family: var(--font-serif);
    font-size: var(--size-4xl);
    font-weight: 300;
    color: var(--color-gray-ultra);
    line-height: 1;
    margin-bottom: 12px;
    transition: color var(--transition);
}

.service-card:hover .service-number {
    color: rgba(26,46,74,0.08);
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--color-navy);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.service-title {
    font-family: var(--font-serif);
    font-size: var(--size-lg);
    font-weight: 500;
    color: var(--color-navy);
    margin-bottom: 12px;
    line-height: 1.3;
}

.service-desc {
    font-size: var(--size-sm);
    color: var(--color-gray-dark);
    line-height: 1.8;
    margin: 0;
}

/* Last two cards centered */
.services-grid .service-card:nth-child(4) {
    grid-column: 1 / 2;
}
.services-grid .service-card:nth-child(5) {
    grid-column: 2 / 3;
}

/* ============================================
   VALUE SECTION
   ============================================ */
.value {
    background: var(--color-navy);
    padding: 100px 0;
}

.value-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.value-lead {
    font-family: var(--font-serif);
    font-size: var(--size-xl);
    font-weight: 400;
    color: rgba(255,255,255,0.9);
    font-style: italic;
    line-height: 1.6;
    margin-bottom: 20px;
}

.value-text {
    font-size: var(--size-base);
    color: rgba(255,255,255,0.7);
    line-height: 1.9;
}

.value-text strong {
    color: var(--color-white);
}

.value-pillars {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.pillar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-md);
    padding: 28px 40px;
    width: 100%;
    text-align: center;
    transition: background var(--transition);
}

.pillar:hover {
    background: rgba(255,255,255,0.12);
}

.pillar i {
    font-size: 1.8rem;
    color: rgba(255,255,255,0.85);
}

.pillar span {
    font-size: var(--size-sm);
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-white);
    text-transform: uppercase;
}

.pillar-result {
    background: rgba(255,255,255,0.14);
    border-color: rgba(255,255,255,0.25);
}

.pillar-connector {
    color: rgba(255,255,255,0.35);
    font-size: var(--size-lg);
}

/* ============================================
   TERRITORY
   ============================================ */
.territory {
    background: var(--color-white);
}

.regions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.region-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-gray-ultra);
    border-radius: var(--radius-full);
    font-size: var(--size-sm);
    font-weight: 500;
    color: var(--color-navy);
    transition: all var(--transition);
}

.region-tag i {
    font-size: 0.75rem;
    color: var(--color-navy);
}

.region-tag:hover {
    background: var(--color-navy);
    color: var(--color-white);
    border-color: var(--color-navy);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.region-tag:hover i {
    color: var(--color-white);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 28px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-ultra);
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
}

.contact-card:hover {
    border-color: var(--color-navy);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--color-navy);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-info strong {
    font-size: var(--size-sm);
    font-weight: 600;
    color: var(--color-navy);
}

.contact-info span {
    font-size: var(--size-sm);
    color: var(--color-gray-mid);
}

.contact-arrow {
    font-size: 0.85rem;
    color: var(--color-gray-light);
    transition: all var(--transition);
}

.contact-card:hover .contact-arrow {
    color: var(--color-navy);
    transform: translateX(4px);
}

.google-reviews {
    text-align: center;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-anthracite);
    padding: 48px 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-name {
    font-family: var(--font-serif);
    font-size: var(--size-lg);
    font-weight: 500;
    color: var(--color-white);
    margin: 0;
}

.footer-tagline {
    font-size: var(--size-xs);
    color: rgba(255,255,255,0.5);
    font-style: italic;
    margin: 0;
}

.footer-meta {
    text-align: center;
}

.footer-meta p {
    font-size: var(--size-xs);
    color: rgba(255,255,255,0.45);
    margin: 0;
    line-height: 1.8;
}

.footer-copy { margin-top: 4px; }

.footer-nav {
    display: flex;
    gap: 24px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.footer-nav a {
    font-size: var(--size-xs);
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
    transition: color var(--transition);
}

.footer-nav a:hover {
    color: var(--color-white);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

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

/* Tablet */
@media (max-width: 900px) {

    h1 { font-size: var(--size-4xl); }
    h2 { font-size: var(--size-2xl); }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero::before { display: none; }

    .hero-cta { justify-content: center; }

    .hero-visual {
        order: -1;
    }

    .hero-photo-wrapper {
        width: 220px;
        height: 280px;
    }

    .hero-badge {
        position: static;
    }

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

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid .service-card:nth-child(4),
    .services-grid .service-card:nth-child(5) {
        grid-column: auto;
    }

    .value-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 24px;
    }

    .footer-nav {
        justify-content: center;
    }
}

/* Mobile */
@media (max-width: 600px) {

    .section { padding: 72px 0; }

    .section-label::before,
    .section-label::after { display: none; }

    .nav-toggle { display: flex; }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0; right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        gap: 0;
        padding: 16px 0 32px;
        transform: translateY(-110%);
        transition: transform var(--transition);
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .nav-link {
        padding: 14px 32px;
        width: 100%;
        font-size: var(--size-base);
    }

    .nav-link::after { display: none; }

    .hero-name { font-size: clamp(2.5rem, 10vw, 3.5rem); }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .value-pillars {
        width: 100%;
    }

    .pillar { padding: 20px 24px; }

    .contact-card {
        padding: 18px 20px;
    }

    .hero-scroll { display: none; }
}

/* Print */
@media print {
    #header, .hero-scroll, .hero-cta, .btn { display: none; }
    .section { padding: 40px 0; }
    body { font-size: 12pt; }
}