/* ==========================================================================
   S1000D / Editor — base theme
   Fondo scuro grigio-blu "carta tecnica", testo chiaro, accento ambra
   (segnaletica tecnica / difesa). Prefisso classi: sd-
   ========================================================================== */

:root {
    --sd-bg: #0d1117;
    --sd-bg-2: #121821;
    --sd-surface: #161d29;
    --sd-surface-2: #1d2635;
    --sd-border: #28323f;
    --sd-border-strong: #3a4757;

    --sd-fg: #e6eaf0;
    --sd-fg-dim: #b3bcc8;
    --sd-muted: #7f8b9b;

    --sd-accent: #f0a63a;
    --sd-accent-hi: #ffbf5e;
    --sd-accent-ink: #1a1203;

    --sd-ok: #5fcf9a;
    --sd-warn: #f0a63a;
    --sd-err: #f06a6a;

    --sd-radius: 10px;
    --sd-radius-sm: 6px;
    --sd-maxw: 1120px;
    --sd-maxw-narrow: 760px;
    --sd-gutter: 20px;

    --sd-font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --sd-font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Cascadia Code", Consolas, Menlo, monospace;
}

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

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

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
    margin: 0;
    /* I blocchi larghi (tabelle, screenshot) scrollano dentro il proprio contenitore, non nel body. */
    overflow-x: hidden;
    background: var(--sd-bg);
    color: var(--sd-fg);
    font-family: var(--sd-font-sans);
    font-size: 17px;
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, svg, video { max-width: 100%; height: auto; }

a { color: var(--sd-accent); text-decoration: none; }
a:hover { color: var(--sd-accent-hi); text-decoration: underline; }

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--sd-accent);
    color: var(--sd-accent-ink);
    padding: 8px 14px;
    z-index: 100;
    border-radius: 0 0 var(--sd-radius-sm) 0;
}
.skip-link:focus { left: 0; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--sd-accent);
    outline-offset: 2px;
}

/* ---------- Tipografia ---------- */

h1, h2, h3, h4 {
    margin: 0 0 .5em;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -.01em;
}
h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
li { margin-bottom: .35em; }
strong { color: var(--sd-fg); }

code, kbd {
    font-family: var(--sd-font-mono);
    font-size: .9em;
    background: var(--sd-surface-2);
    border: 1px solid var(--sd-border);
    border-radius: 4px;
    padding: .08em .4em;
    color: var(--sd-accent-hi);
}

hr {
    border: 0;
    border-top: 1px solid var(--sd-border);
    margin: 0;
}

/* ---------- Layout ---------- */

.sd-container {
    width: 100%;
    max-width: var(--sd-maxw);
    margin: 0 auto;
    padding: 0 var(--sd-gutter);
}
.sd-container-narrow { max-width: var(--sd-maxw-narrow); }

.sd-section { padding: 72px 0; }
.sd-section-alt { background: var(--sd-bg-2); border-top: 1px solid var(--sd-border); border-bottom: 1px solid var(--sd-border); }
.sd-section-head { max-width: var(--sd-maxw-narrow); margin-bottom: 36px; }
.sd-lead { font-size: 1.15rem; color: var(--sd-fg-dim); }
.sd-eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    font-family: var(--sd-font-mono);
    font-size: .78rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--sd-accent);
}

/* ---------- Header ---------- */

.sd-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(13, 17, 23, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--sd-border);
}
.sd-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 62px;
}
.sd-logo {
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -.02em;
    color: var(--sd-fg);
}
.sd-logo:hover { color: var(--sd-fg); text-decoration: none; }
.sd-logo { display: inline-flex; align-items: center; }
.sd-logo img { display: block; height: 32px; width: auto; }
.sd-nav-links {
    display: flex;
    gap: 22px;
    margin: 0 auto 0 12px;
    padding: 0;
    list-style: none;
}
.sd-nav-links li { margin: 0; }
.sd-nav-link { color: var(--sd-fg-dim); font-size: .95rem; }
.sd-nav-link:hover,
.sd-nav-link[aria-current="page"] { color: var(--sd-fg); text-decoration: none; }
.sd-nav-link[aria-current="page"] { box-shadow: 0 2px 0 var(--sd-accent); }

/* ---------- Bottoni ---------- */

.sd-btn {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--sd-border-strong);
    border-radius: var(--sd-radius-sm);
    background: transparent;
    color: var(--sd-fg);
    font: inherit;
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.3;
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s;
}
.sd-btn:hover { border-color: var(--sd-accent); color: var(--sd-fg); text-decoration: none; }
.sd-btn-primary {
    background: var(--sd-accent);
    border-color: var(--sd-accent);
    color: var(--sd-accent-ink);
}
.sd-btn-primary:hover { background: var(--sd-accent-hi); border-color: var(--sd-accent-hi); color: var(--sd-accent-ink); }
.sd-btn-lg { padding: 13px 26px; font-size: 1.02rem; }
.sd-btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

/* ---------- Hero ---------- */

.sd-hero {
    padding: 84px 0 64px;
    background:
        radial-gradient(ellipse at 80% -10%, rgba(240, 166, 58, .10), transparent 55%),
        var(--sd-bg);
    border-bottom: 1px solid var(--sd-border);
}
.sd-hero h1 { max-width: 24ch; }
.sd-hero .sd-lead { max-width: 60ch; }
.sd-hero-figure { margin-top: 44px; }

/* ---------- Screenshot / figure ---------- */

.sd-figure {
    margin: 28px 0 0;
    background: var(--sd-surface);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
    overflow: hidden;
}
.sd-figure img { display: block; width: 100%; height: auto; }
.sd-figure-link { display: block; cursor: zoom-in; }
.sd-figure-link:focus-visible { outline: 2px solid var(--sd-accent); outline-offset: -2px; }
.sd-figure figcaption {
    padding: 10px 16px;
    font-size: .85rem;
    color: var(--sd-muted);
    border-top: 1px solid var(--sd-border);
}
/* Segnaposto finché lo screenshot non c'è */
.sd-figure-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    padding: 20px;
    text-align: center;
    color: var(--sd-muted);
    font-family: var(--sd-font-mono);
    font-size: .85rem;
    background: repeating-linear-gradient(45deg, var(--sd-surface), var(--sd-surface) 12px, var(--sd-surface-2) 12px, var(--sd-surface-2) 24px);
}

/* ---------- Card e griglie ---------- */

.sd-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.sd-card {
    padding: 24px;
    background: var(--sd-surface);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
}
.sd-card h3 { margin-bottom: .4em; }
.sd-card p:last-child { margin-bottom: 0; }

/* Elenco con segno di spunta ambra */
.sd-checklist { list-style: none; padding: 0; }
.sd-checklist li { position: relative; padding-left: 28px; }
.sd-checklist li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: .55em;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--sd-accent);
}

/* Blocco feature: testo + immagine affiancati, alternati */
.sd-feature {
    display: grid;
    gap: 36px;
    align-items: center;
    grid-template-columns: 1fr 1.5fr;
    padding: 44px 0;
    border-top: 1px solid var(--sd-border);
}
/* Alternanza contata dentro il wrapper .sd-features, non tra i fratelli della sezione */
.sd-features > .sd-feature:first-child { border-top: 0; }
.sd-features > .sd-feature:nth-child(even) { grid-template-columns: 1.5fr 1fr; }
.sd-features > .sd-feature:nth-child(even) > :first-child { order: 2; }
.sd-feature .sd-figure { margin-top: 0; }

/* ---------- Tabelle ---------- */

.sd-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
    -webkit-overflow-scrolling: touch;
}
.sd-table {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    font-size: .95rem;
}
.sd-table th,
.sd-table td {
    padding: 13px 18px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--sd-border);
}
.sd-table thead th {
    background: var(--sd-surface-2);
    font-size: .8rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--sd-muted);
}
.sd-table tbody tr:last-child td { border-bottom: 0; }
.sd-table tbody td:first-child { font-weight: 600; color: var(--sd-fg); white-space: nowrap; }
.sd-table tbody td { color: var(--sd-fg-dim); }

/* ---------- Pill (settori) ---------- */

.sd-subhead { margin-top: 24px; }

/* Nota evidenziata (es. lingue disponibili) */
.sd-note {
    padding: 12px 16px;
    border-left: 3px solid var(--sd-accent);
    background: var(--sd-surface);
    border-radius: 0 var(--sd-radius) var(--sd-radius) 0;
}

.sd-pills { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 1em; }
.sd-pills li { margin: 0; }
.sd-pill {
    display: inline-block;
    padding: 5px 14px;
    border: 1px solid var(--sd-border-strong);
    border-radius: 999px;
    font-size: .88rem;
    color: var(--sd-fg-dim);
    background: var(--sd-surface);
}

/* ---------- Statistiche / caso studio ---------- */

.sd-stats {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    margin: 28px 0;
}
.sd-stat {
    padding: 20px;
    border-left: 3px solid var(--sd-accent);
    background: var(--sd-surface);
    border-radius: 0 var(--sd-radius-sm) var(--sd-radius-sm) 0;
}
.sd-stat strong { display: block; font-size: 2rem; line-height: 1.1; color: var(--sd-accent); }
.sd-stat span { font-size: .9rem; color: var(--sd-fg-dim); }

/* ---------- FAQ ---------- */

.sd-faq { max-width: var(--sd-maxw-narrow); }
.sd-faq details {
    border-bottom: 1px solid var(--sd-border);
    padding: 4px 0;
}
.sd-faq summary {
    position: relative;
    padding: 16px 32px 16px 0;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
}
.sd-faq summary::-webkit-details-marker { display: none; }
.sd-faq summary::after {
    content: "+";
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    color: var(--sd-accent);
}
.sd-faq details[open] summary::after { content: "\2212"; }
.sd-faq details p { padding-bottom: 16px; margin: 0; color: var(--sd-fg-dim); }

/* ---------- Form contatti ---------- */

.sd-form { display: grid; gap: 16px; max-width: 560px; }
.sd-form[hidden] { display: none; }
.sd-field { display: grid; gap: 6px; }
.sd-field label { font-size: .9rem; font-weight: 600; color: var(--sd-fg-dim); }
.sd-field input,
.sd-field select,
.sd-field textarea {
    width: 100%;
    padding: 11px 14px;
    background: var(--sd-surface);
    border: 1px solid var(--sd-border-strong);
    border-radius: var(--sd-radius-sm);
    color: var(--sd-fg);
    font: inherit;
}
.sd-field textarea { min-height: 130px; resize: vertical; }
.sd-field input:focus,
.sd-field select:focus,
.sd-field textarea:focus { border-color: var(--sd-accent); }
.sd-form-note { font-size: .85rem; color: var(--sd-muted); margin: 0; }
.sd-field-opt { font-weight: 400; color: var(--sd-muted); }
.sd-validated :invalid { border-color: var(--sd-err); }
.sd-form button[type="submit"] { justify-self: start; }
.sd-form button[disabled] { opacity: .6; cursor: progress; }
/* Honeypot: fuori schermo ma non display:none, che alcuni bot riconoscono */
.sd-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.sd-contact {
    display: grid;
    gap: 40px;
    grid-template-columns: minmax(0, 560px) 1fr;
    align-items: start;
}
.sd-contact .sd-form-status { grid-column: 1; }
.sd-contact-aside {
    grid-column: 2;
    grid-row: 1;
    padding: 24px;
    background: var(--sd-surface);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
    color: var(--sd-fg-dim);
}
.sd-contact-aside p:last-child { margin-bottom: 0; }

@media (max-width: 860px) {
    .sd-contact { grid-template-columns: 1fr; }
    .sd-contact-aside { grid-column: 1; grid-row: auto; }
}
.sd-form-status { padding: 12px 16px; border-radius: var(--sd-radius-sm); border: 1px solid var(--sd-border-strong); }
.sd-form-status.is-ok { border-color: var(--sd-ok); color: var(--sd-ok); }
.sd-form-status.is-err { border-color: var(--sd-err); color: var(--sd-err); }

/* ---------- Pagine legali ---------- */

.sd-legal h2 { font-size: 1.35rem; margin-top: 1.8em; }
.sd-legal h3 { font-size: 1.1rem; margin-top: 1.4em; }

/* ---------- Footer ---------- */

.sd-footer {
    margin-top: 0;
    padding: 28px 0;
    background: var(--sd-bg-2);
    border-top: 1px solid var(--sd-border);
    font-size: .9rem;
    color: var(--sd-muted);
}
.sd-footer p { margin: 0; }

/* ---------- Cookie banner ---------- */

.sd-cookie {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background: var(--sd-surface);
    border-top: 1px solid var(--sd-border-strong);
    transform: translateY(100%);
    transition: transform .35s ease;
}
.sd-cookie.is-visible { transform: translateY(0); }
.sd-cookie[hidden] { display: none; }
.sd-cookie__inner {
    display: flex;
    align-items: center;
    gap: 32px;
    padding-block: 16px;
}
.sd-cookie__text { flex: 1; margin: 0; font-size: .9rem; line-height: 1.6; }

/* ---------- Used by ---------- */

.sd-clients { display: flex; flex-wrap: wrap; align-items: center; gap: 32px 48px; margin: 0; padding: 0; list-style: none; }
.sd-clients img { display: block; height: 80px; width: auto; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
    .sd-feature { grid-template-columns: 1fr; gap: 20px; padding: 32px 0; }
    .sd-features > .sd-feature:nth-child(even) { grid-template-columns: 1fr; }
    .sd-features > .sd-feature:nth-child(even) > :first-child { order: 0; }
    .sd-section { padding: 52px 0; }
    .sd-hero { padding: 56px 0 44px; }
}

@media (max-width: 640px) {
    :root { --sd-gutter: 16px; }
    body { font-size: 16px; }
    .sd-nav { gap: 12px; }
    .sd-nav-links { display: none; }
    .sd-nav-cta { margin-left: auto; padding: 8px 14px; }
    .sd-cookie__inner { flex-direction: column; align-items: stretch; gap: 12px; }
}