/* ==========================================================================
   DGA Solution Center – Car Replacement (one page)
   Stile derivato dalla home di dgasolutioncenter.it
   ========================================================================== */

:root {
    --c-accent: #ff7a00;
    --c-accent-dark: #d96800;
    --c-bg: #151515;
    --c-bg-alt: #1e1e1e;
    --c-bg-soft: #262626;
    --c-card: #2b2b2b;
    --c-border: #3a3a3a;
    --c-text: #fafafa;
    --c-muted: #b1b1b1;
    --c-header: rgba(232, 232, 232, 0.92);

    --font: "Roboto", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    --container: 1160px;
    --gutter: clamp(16px, 4vw, 32px);
    --radius: 20px;
    --radius-sm: 12px;
    --header-h: 88px;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

/* Reset essenziale ------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; line-height: 1.1; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 700; color: #fff; }
figure { margin: 0; }
svg { fill: currentColor; }

:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 200;
    background: var(--c-accent); color: #000; padding: 10px 16px; border-radius: 6px; font-weight: 600;
}
.skip-link:focus { top: 16px; }

.container {
    width: 100%;
    max-width: calc(var(--container) + var(--gutter) * 2);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* Bottoni ------------------------------------------------------------------ */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 50px; padding: 12px 28px;
    border: 2px solid transparent; border-radius: 999px;
    font: 600 0.95rem/1 var(--font); letter-spacing: 0.04em; text-transform: uppercase;
    cursor: pointer; transition: background-color .2s, color .2s, border-color .2s, transform .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--c-accent); color: #111; }
.btn-primary:hover { background: #ff8f26; }
.btn-ghost { border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn-ghost:hover { background: #fff; color: #111; }
.btn[disabled] { opacity: .6; cursor: progress; transform: none; }

.link-arrow { font-weight: 600; text-transform: uppercase; letter-spacing: .04em; font-size: .9rem; }
.link-arrow::after { content: " →"; }

/* Header ------------------------------------------------------------------- */
.site-header {
    position: fixed; inset: 0 0 auto 0; z-index: 100;
    height: var(--header-h);
    background: var(--c-header);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: box-shadow .25s;
}
.site-header.is-scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, .35); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand img { width: 118px; height: auto; }

.main-nav ul { display: flex; align-items: center; gap: 4px; margin: 0; padding: 0; list-style: none; }
.main-nav a {
    display: block; padding: 10px 14px;
    color: #111; font-weight: 700; font-size: .95rem; text-transform: uppercase; letter-spacing: .01em;
    border-radius: 999px; transition: color .2s, background-color .2s;
}
.main-nav a:hover,
.main-nav a.is-active { color: var(--c-accent-dark); text-decoration: none; }
.main-nav .nav-cta { background: var(--c-accent); color: #111; padding: 10px 20px; margin-left: 8px; }
.main-nav .nav-cta:hover,
.main-nav .nav-cta.is-active { background: #111; color: #fff; }

.nav-toggle {
    display: none; position: relative; width: 46px; height: 46px;
    border: 0; border-radius: 10px; background: transparent; cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
    position: absolute; left: 11px; width: 24px; height: 3px; border-radius: 2px; background: #111;
    transition: transform .25s, opacity .25s;
}
.nav-toggle-bar { top: 50%; margin-top: -1.5px; }
.nav-toggle-bar::before { content: ""; left: 0; top: -8px; }
.nav-toggle-bar::after { content: ""; left: 0; top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-8px) rotate(-45deg); }

/* Hero --------------------------------------------------------------------- */
.hero {
    position: relative; isolation: isolate;
    display: flex; align-items: center;
    min-height: min(92vh, 860px);
    padding: calc(var(--header-h) + 64px) 0 88px;
    overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 60%; }
.hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background:
        linear-gradient(90deg, rgba(21, 21, 21, .92) 0%, rgba(21, 21, 21, .72) 50%, rgba(21, 21, 21, .35) 100%),
        linear-gradient(0deg, var(--c-bg) 0%, rgba(21, 21, 21, 0) 30%);
}
.hero-content { max-width: calc(1000px + var(--gutter) * 2); margin-left: max(0px, calc((100% - var(--container)) / 2 - var(--gutter))); }
.hero-logo { width: clamp(220px, 32vw, 360px); margin-bottom: 28px; }
.hero h1 {
    color: var(--c-accent);
    font-size: clamp(2rem, 4.4vw, 3.9rem);
    font-weight: 800; text-transform: uppercase; letter-spacing: -.01em; line-height: 1.02;
}
.hero-subtitle {
    max-width: 640px; margin: 24px 0 36px;
    color: #d6d6d6; font-size: clamp(1.05rem, 1.6vw, 1.3rem); font-weight: 300;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Numeri ------------------------------------------------------------------- */
.highlights { background: var(--c-bg-soft); border-block: 1px solid var(--c-border); }
.highlights-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.highlight { padding: 34px 20px; text-align: center; border-left: 1px solid var(--c-border); }
.highlight:first-child { border-left: 0; }
.highlight-value {
    display: block; color: var(--c-accent);
    font-size: clamp(2rem, 3.6vw, 2.9rem); font-weight: 800; line-height: 1;
}
.highlight-label { display: block; margin-top: 10px; color: var(--c-muted); font-size: .92rem; line-height: 1.4; }

/* Sezioni ------------------------------------------------------------------ */
.section { padding: clamp(72px, 10vw, 120px) 0; color: var(--c-muted); }
.section-alt { background: var(--c-bg-alt); }

.section-title {
    margin-bottom: 28px;
    color: var(--c-accent);
    font-size: clamp(2.4rem, 6vw, 4.5rem);
    font-weight: 800; text-transform: uppercase; letter-spacing: -.01em; line-height: 1;
}
.section-title-sm { font-size: clamp(2rem, 4vw, 2.9rem); text-transform: none; }

.section-head { max-width: 900px; margin: 0 auto clamp(40px, 6vw, 64px); text-align: center; }
.section-head p { font-size: 1.05rem; }
.section-head-left { margin-left: 0; text-align: left; }
.section-head-left .section-title { margin-bottom: 14px; }

/* Split (testo + immagine) */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 6vw, 80px); align-items: center; }
.split-reverse .split-media { order: -1; }
.split-media img {
    width: 100%; aspect-ratio: 4 / 3.4; object-fit: cover;
    border-radius: var(--radius); box-shadow: var(--shadow);
}

/* Come funziona ------------------------------------------------------------ */
.services-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    margin: 0; padding: 0; list-style: none;
}
.service-card {
    position: relative; display: flex; flex-direction: column;
    padding: 30px 26px; border-radius: var(--radius);
    background: var(--c-card); border: 1px solid var(--c-border);
    transition: transform .25s, border-color .25s;
}
.service-card:hover { transform: translateY(-4px); border-color: var(--c-accent); }
.service-card h3 { margin-bottom: 10px; color: #fff; font-size: 1.12rem; font-weight: 700; line-height: 1.25; }
.service-card p { font-size: .95rem; line-height: 1.55; }
.service-icon {
    display: grid; place-items: center; width: 56px; height: 56px; margin-bottom: 20px;
    border-radius: 50%; background: rgba(255, 122, 0, .12); color: var(--c-accent);
}
.service-icon svg { width: 28px; height: 28px; }

.service-card-extra { background: var(--c-accent); border-color: var(--c-accent); color: #2a1600; }
.service-card-extra:hover { border-color: #fff; }
.service-card-extra h3,
.service-card-extra strong { color: #111; }
.service-card-extra .link-arrow { margin-top: auto; padding-top: 16px; color: #111; }
.service-tag {
    align-self: flex-start; margin-bottom: 18px; padding: 6px 12px;
    border-radius: 999px; background: #111; color: #fff;
    font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
}

/* Vantaggi: arco ----------------------------------------------------------- */
.arc {
    position: relative;
    max-width: 960px; margin: 0 auto;
    aspect-ratio: 2 / 1.08;
}
.arc-ring {
    position: absolute; left: 15%; bottom: 4%;
    width: 70%; aspect-ratio: 2 / 1;
    border: 3px solid var(--c-accent); border-bottom: 0;
    border-radius: 999px 999px 0 0;
}
.arc-items { position: absolute; inset: 0; }
.arc-item {
    --size: 84px;
    position: absolute; left: var(--x); bottom: var(--y);
    display: flex; flex-direction: column; align-items: center; gap: 10px;
    padding: 0; border: 0; background: none; color: var(--c-muted);
    font: 600 .85rem/1.2 var(--font); text-transform: uppercase; letter-spacing: .04em;
    transform: translate(-50%, 50%); cursor: pointer;
}
.arc-item svg {
    box-sizing: content-box; width: 34px; height: 34px; padding: calc((var(--size) - 34px) / 2);
    border-radius: 50%; background: #d9d9d9; color: var(--c-accent);
    box-shadow: 0 0 0 8px rgba(255, 255, 255, .03), 0 10px 30px rgba(0, 0, 0, .5);
    transition: background-color .25s, color .25s, transform .25s;
}
.arc-item span { white-space: nowrap; transition: color .25s; }
.arc-item:hover svg { transform: scale(1.06); }
.arc-item[aria-selected="true"] svg { background: #3a3a3a; color: var(--c-accent); }
.arc-item[aria-selected="true"] span { color: #fff; }

.arc-item:nth-child(1) { --x: 6%;    --y: 8%; }
.arc-item:nth-child(2) { --x: 19%;   --y: 66%; }
.arc-item:nth-child(3) { --x: 50%;   --y: 92%; }
.arc-item:nth-child(4) { --x: 81%;   --y: 66%; }
.arc-item:nth-child(5) { --x: 94%;   --y: 8%; }

.arc-center {
    position: absolute; left: 50%; bottom: 4%;
    width: min(56%, 480px); transform: translateX(-50%);
    text-align: center;
}
.arc-center img { width: min(260px, 70%); margin: 0 auto 14px; }
.arc-title { margin-bottom: 10px; color: #fff; font-size: clamp(1.25rem, 2.2vw, 1.7rem); font-weight: 700; }
.arc-text { font-size: clamp(1rem, 1.5vw, 1.15rem); color: #d0d0d0; }
.arc-center.is-changing .arc-title,
.arc-center.is-changing .arc-text { opacity: 0; transform: translateY(6px); }
.arc-title,
.arc-text { transition: opacity .2s, transform .2s; }

/* Punti di forza ----------------------------------------------------------- */
.strengths { counter-reset: forza; margin: 0; padding: 0; list-style: none; }
.strengths li {
    counter-increment: forza;
    position: relative; padding: 0 0 26px 64px; margin-bottom: 26px;
    border-bottom: 1px solid var(--c-border);
}
.strengths li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.strengths li::before {
    content: counter(forza, decimal-leading-zero);
    position: absolute; left: 0; top: -4px;
    color: var(--c-accent); font-size: 2rem; font-weight: 800; line-height: 1;
}
.strengths h3 { margin-bottom: 8px; color: #fff; font-size: 1.2rem; font-weight: 700; }

/* FAQ ---------------------------------------------------------------------- */
.section-faq { background: var(--c-bg-soft); }
.faq-layout { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.faq-media img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }

.faq-list details { border-bottom: 2px solid var(--c-accent); }
.faq-list summary {
    position: relative; display: block;
    padding: 18px 44px 18px 14px;
    color: #e6e6e6; font-weight: 600; font-size: 1.02rem; text-transform: uppercase; line-height: 1.35;
    cursor: pointer; list-style: none; transition: color .2s;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
    content: ""; position: absolute; right: 14px; top: 50%;
    width: 20px; height: 20px; margin-top: -10px; border-radius: 50%;
    background: #e6e6e6 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23262626' d='M7.4 8.6 12 13.2l4.6-4.6L18 10l-6 6-6-6z'/%3E%3C/svg%3E") center / 18px no-repeat;
    transition: transform .25s, background-color .2s;
}
.faq-list summary:hover { color: var(--c-accent); }
.faq-list details[open] summary { color: var(--c-accent); }
.faq-list details[open] summary::after { transform: rotate(180deg); background-color: var(--c-accent); }
.faq-answer { padding: 0 14px 22px; }

/* Contatti ----------------------------------------------------------------- */
.section-contact {
    position: relative;
    background:
        radial-gradient(circle at 0% 0%, rgba(255, 122, 0, .14), transparent 45%),
        var(--c-bg);
}
.contact-layout { display: grid; grid-template-columns: .9fr 1.3fr; gap: clamp(36px, 6vw, 80px); align-items: start; }
.contact-info .section-title { font-size: clamp(2.2rem, 4.6vw, 3.6rem); }

.contact-list { margin: 32px 0 0; padding: 0; list-style: none; }
.contact-list li { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; color: #e6e6e6; font-size: 1.05rem; }
.contact-list svg { flex: none; width: 22px; height: 22px; color: var(--c-accent); }
.contact-list a { color: #e6e6e6; }
.contact-list a:hover { color: var(--c-accent); }

.contact-form {
    padding: clamp(24px, 4vw, 44px);
    border-radius: var(--radius); background: var(--c-bg-soft); border: 1px solid var(--c-border);
    box-shadow: var(--shadow);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-full { grid-column: 1 / -1; }
.field label { color: #e6e6e6; font-size: .9rem; font-weight: 500; }

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field select,
.field textarea {
    width: 100%; min-height: 48px; padding: 12px 14px;
    border: 1px solid #4a4a4a; border-radius: 10px;
    background: #1a1a1a; color: #fff;
    font: 400 1rem/1.4 var(--font);
    transition: border-color .2s, box-shadow .2s;
}
.field select {
    appearance: none; padding-right: 40px;
    background: #1a1a1a url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23ff7a00' d='M7.4 8.6 12 13.2l4.6-4.6L18 10l-6 6-6-6z'/%3E%3C/svg%3E") right 12px center / 22px no-repeat;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(255, 122, 0, .25); }
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #ff5a4f; }
.field-error { color: #ff7b72; font-size: .82rem; }

.field-check { flex-direction: row; align-items: flex-start; gap: 12px; }
.field-check input { flex: none; width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--c-accent); }
.field-check label { font-weight: 400; color: var(--c-muted); line-height: 1.5; }
.field-check.has-error label { color: #ff7b72; }
.field-check .field-error { display: none; }

.field-captcha { grid-column: 1 / -1; max-width: 360px; }

.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

.form-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 28px; }
.form-status { margin: 0; font-size: .95rem; }
.form-status.is-success { color: #6fd38a; }
.form-status.is-error { color: #ff7b72; }

/* Footer ------------------------------------------------------------------- */
.site-footer { background: #000; color: var(--c-muted); font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-block: 64px 48px; }
.footer-brand img { width: min(340px, 100%); margin-bottom: 18px; }
.footer-title { margin-bottom: 14px; color: #fff; font-size: 1rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.footer-list { margin: 0; padding: 0; list-style: none; }
.footer-list li { margin-bottom: 8px; }
.footer-list a { color: var(--c-muted); }
.footer-list a:hover { color: var(--c-accent); }
.footer-bottom { border-top: 1px solid #222; }
.footer-bottom-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding-block: 20px; font-size: .85rem; }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--c-muted); }
.footer-bottom a:hover { color: var(--c-accent); }

/* Animazioni ingresso ------------------------------------------------------ */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; animation: none !important; }
    .js .reveal { opacity: 1; transform: none; }
}

/* Responsive --------------------------------------------------------------- */
@media (max-width: 1100px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .main-nav a { padding: 10px 10px; font-size: .88rem; }
}

@media (max-width: 960px) {
    :root { --header-h: 72px; }
    .brand img { width: 96px; }

    .nav-toggle { display: block; }
    .main-nav {
        position: fixed; inset: var(--header-h) 0 auto 0;
        background: #ececec; box-shadow: 0 18px 30px rgba(0, 0, 0, .35);
        transform: translateY(-8px); opacity: 0; visibility: hidden;
        transition: opacity .2s, transform .2s, visibility .2s;
    }
    .main-nav.is-open { transform: none; opacity: 1; visibility: visible; }
    .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 20px; }
    .main-nav a { padding: 14px 4px; font-size: 1rem; border-bottom: 1px solid #d4d4d4; border-radius: 0; }
    .main-nav .nav-cta { margin: 14px 0 0; text-align: center; border-radius: 999px; border-bottom: 0; }

    .split,
    .faq-layout,
    .contact-layout { grid-template-columns: 1fr; }
    .split-reverse .split-media { order: 0; }
    .faq-media { display: none; }

    .highlights-grid { grid-template-columns: repeat(2, 1fr); }
    .highlight:nth-child(3) { border-left: 0; }
    .highlight:nth-child(n + 3) { border-top: 1px solid var(--c-border); }

    /* L'arco diventa una lista di "tab" + pannello */
    .arc { aspect-ratio: auto; }
    .arc-ring { display: none; }
    .arc-items { position: static; display: flex; flex-wrap: wrap; justify-content: center; gap: 18px 14px; }
    .arc-item { position: static; transform: none; --size: 64px; width: 96px; text-align: center; }
    .arc-item span { white-space: normal; font-size: .75rem; }
    .arc-item svg { width: 28px; height: 28px; padding: 18px; }
    .arc-center {
        position: static; transform: none; width: 100%; margin-top: 32px;
        padding: 28px 22px; border-radius: var(--radius);
        border: 2px solid var(--c-accent); border-bottom-width: 0;
        border-radius: 200px 200px 0 0 / 80px 80px 0 0;
    }
}

@media (max-width: 640px) {
    .hero { min-height: auto; padding: calc(var(--header-h) + 48px) 0 64px; }
    .hero-bg::after { background: linear-gradient(0deg, var(--c-bg) 0%, rgba(21, 21, 21, .8) 40%, rgba(21, 21, 21, .65) 100%); }
    .hero-actions .btn { flex: 1 1 100%; }
    .services-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .highlight { padding: 26px 12px; }
    .faq-list summary { font-size: .95rem; padding-left: 4px; }
    .faq-answer { padding-inline: 4px; }
}