/* ==========================================================================
   AlchemAI Laboratory - tema blu scuro con accenti ciano
   ========================================================================== */

:root {
    --bg-0: #061430;
    --bg-1: #0a1f4a;
    --bg-2: #0e2a63;
    --card: rgba(255, 255, 255, 0.045);
    --card-hover: rgba(255, 255, 255, 0.075);
    --line: rgba(120, 190, 255, 0.18);
    --line-strong: rgba(120, 200, 255, 0.4);
    --text: #e9f1ff;
    --muted: #9fb5d8;
    --cyan: #3ee1ff;
    --blue: #1e78ff;
    --grad: linear-gradient(135deg, #1e78ff 0%, #3ee1ff 100%);
    --radius: 18px;
    --shadow: 0 20px 50px -20px rgba(0, 10, 40, 0.8);
    --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background: radial-gradient(1200px 800px at 50% -10%, var(--bg-2) 0%, var(--bg-1) 45%, var(--bg-0) 100%) fixed;
    background-color: var(--bg-0);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .6em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---- sfondo animato ---- */
#neural-bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; opacity: .55; }
.bg-glow {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background:
        radial-gradient(600px 400px at 85% 15%, rgba(62, 225, 255, 0.10), transparent 70%),
        radial-gradient(700px 500px at 10% 80%, rgba(30, 120, 255, 0.14), transparent 70%);
}
main, .site-header, .site-footer { position: relative; z-index: 1; }

.container { width: min(1180px, 100% - 40px); margin-inline: auto; }
.section { padding: 70px 0; }
.section.tight { padding-top: 10px; }
.center { text-align: center; margin-top: 34px; }
.center-block { text-align: center; padding: 120px 0; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.note { color: var(--muted); font-size: .9rem; margin-top: 26px; text-align: center; }

/* ---- header ---- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(6, 20, 48, 0.72);
    border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 44px; height: auto; filter: drop-shadow(0 0 12px rgba(62, 225, 255, .45)); }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; }
.brand-name b { color: var(--cyan); font-weight: 800; }
.brand-sub { font-size: .58rem; letter-spacing: .42em; color: var(--muted); margin-top: 4px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-link { color: var(--muted); padding: 8px 12px; border-radius: 10px; font-weight: 500; font-size: .95rem; }
.nav-link:hover { color: var(--text); text-decoration: none; background: var(--card); }
.nav-link.active { color: var(--text); background: rgba(62, 225, 255, .12); }

.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; margin: 0 8px; }
.lang-switch a { color: var(--muted); font-size: .78rem; font-weight: 700; padding: 5px 11px; }
.lang-switch a:hover { text-decoration: none; color: var(--text); }
.lang-switch a.on { background: var(--grad); color: #03122e; }

.nav-toggle, .nav-burger { display: none; }

/* ---- bottoni ---- */
.btn {
    display: inline-flex; align-items: center; gap: 8px; justify-content: center;
    padding: 13px 24px; border-radius: 12px; font-weight: 650; font-size: 1rem;
    border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
    font-family: inherit;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--grad); color: #03122e; box-shadow: 0 10px 30px -10px rgba(62, 225, 255, .65); }
.btn-primary:hover { box-shadow: 0 14px 36px -8px rgba(62, 225, 255, .85); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-ghost { color: var(--text); border-color: var(--line-strong); background: transparent; }
.btn-ghost:hover { background: var(--card-hover); }
.btn-sm { padding: 9px 16px; font-size: .9rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---- testi ricorrenti ---- */
.eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: .78rem; letter-spacing: .22em; text-transform: uppercase; color: var(--cyan); font-weight: 700; margin-bottom: 18px;
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted); max-width: 62ch; }
.body-lg { font-size: 1.1rem; color: var(--muted); }
.section-head { max-width: 760px; margin-bottom: 38px; }
.section-head p { color: var(--muted); font-size: 1.1rem; }

/* ---- hero ---- */
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; padding: 70px 0 40px; }
.hero-copy .lead { margin-bottom: 30px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chips li { border: 1px solid var(--line); background: var(--card); color: var(--muted); padding: 6px 14px; border-radius: 999px; font-size: .85rem; }
.art-frame {
    border-radius: 28px; overflow: hidden; border: 1px solid var(--line-strong);
    box-shadow: 0 0 80px -10px rgba(62, 225, 255, .35), var(--shadow);
    animation: float 7s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---- statistiche ---- */
.stats {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px;
    background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 30px;
}
.stat { background: rgba(8, 24, 58, .85); padding: 28px 20px; text-align: center; }
.stat-num { font-size: 2.4rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { color: var(--muted); font-size: .9rem; }

/* ---- pipeline ---- */
.pipeline { display: flex; align-items: stretch; gap: 16px; }
.step { flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.step-num { font-size: .85rem; font-weight: 800; letter-spacing: .2em; color: var(--cyan); margin-bottom: 14px; }
.step p { color: var(--muted); margin: 0; }
.step-arrow { display: flex; align-items: center; color: var(--cyan); }

/* ---- griglie e card ---- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
    display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 28px; color: var(--text); transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
a.card:hover { text-decoration: none; transform: translateY(-4px); border-color: var(--line-strong); background: var(--card-hover); box-shadow: 0 20px 40px -24px rgba(62, 225, 255, .5); }
.card p { color: var(--muted); }
.card-icon {
    width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 18px;
    background: rgba(62, 225, 255, .1); border: 1px solid var(--line-strong); color: var(--cyan);
}
.more { display: inline-flex; align-items: center; gap: 6px; color: var(--cyan); font-weight: 650; font-size: .92rem; margin-top: 8px; }
.service-detail .checklist { list-style: none; display: grid; gap: 8px; margin-top: 18px; }
.checklist li { position: relative; padding-left: 26px; color: var(--text); font-size: .95rem; }
.checklist li::before { content: ""; position: absolute; left: 0; top: .55em; width: 12px; height: 7px; border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg); }

.badge { display: inline-block; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: var(--cyan); border: 1px solid var(--line-strong); padding: 4px 10px; border-radius: 999px; margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.tag { font-size: .78rem; color: var(--muted); border: 1px solid var(--line); background: rgba(255, 255, 255, .03); padding: 3px 10px; border-radius: 8px; }
a.tag:hover { color: var(--cyan); text-decoration: none; border-color: var(--line-strong); }
.metrics { display: flex; gap: 26px; margin: 12px 0 6px; }
.metric strong { display: block; font-size: 1.5rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metric span { color: var(--muted); font-size: .8rem; }

.stack { display: flex; flex-wrap: wrap; gap: 10px; }
.stack-item { padding: 8px 16px; border-radius: 10px; background: var(--card); border: 1px solid var(--line); font-size: .92rem; }

/* ---- fascia CTA ---- */
.cta-band {
    display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
    padding: 44px; border-radius: 24px; border: 1px solid var(--line-strong);
    background: linear-gradient(135deg, rgba(30, 120, 255, .28), rgba(62, 225, 255, .1));
}
.cta-band h2 { margin-bottom: 8px; }
.cta-band p { margin: 0; color: var(--muted); }

/* ---- intestazione pagine interne ---- */
.page-head { padding: 70px 0 30px; }
.page-head h1 { max-width: 20ch; }
.back { display: inline-block; margin-bottom: 20px; color: var(--muted); font-size: .92rem; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ---- blog ---- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.chip-link { padding: 7px 16px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.chip-link:hover { text-decoration: none; color: var(--text); border-color: var(--line-strong); }
.chip-link.on { background: var(--grad); color: #03122e; border-color: transparent; font-weight: 700; }
.post-meta { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: .85rem; margin-bottom: 12px; }
.article { max-width: 780px; }
.prose p { font-size: 1.1rem; color: #cfdcf3; line-height: 1.8; }
.prose h2 { margin-top: 1.8em; }

/* ---- chi siamo ---- */
.split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.quote { font-size: 1.5rem; font-weight: 700; line-height: 1.3; border-left: 3px solid var(--cyan); }
.quote p { color: var(--text); }

/* ---- laboratorio (chat) ---- */
.lab-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 28px; align-items: start; }
.lab-side { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.steps-list { list-style: none; counter-reset: s; display: grid; gap: 16px; margin: 18px 0 24px; }
.steps-list li { counter-increment: s; position: relative; padding-left: 44px; display: grid; gap: 2px; }
.steps-list li::before {
    content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%;
    display: grid; place-items: center; background: rgba(62, 225, 255, .12); border: 1px solid var(--line-strong); color: var(--cyan); font-weight: 800; font-size: .85rem;
}
.steps-list span { color: var(--muted); font-size: .92rem; }

.chat { background: rgba(5, 16, 40, .85); border: 1px solid var(--line-strong); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
.chat-top { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .03); }
.chat-dot { width: 10px; height: 10px; border-radius: 50%; background: #35e08a; box-shadow: 0 0 10px #35e08a; }
.chat-badge { margin-left: auto; font-size: .68rem; letter-spacing: .18em; color: var(--cyan); border: 1px solid var(--line-strong); padding: 2px 8px; border-radius: 6px; }
.chat-log { height: 360px; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 12px; scroll-behavior: smooth; }
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.bubble { max-width: 82%; padding: 11px 15px; border-radius: 16px; font-size: .96rem; line-height: 1.5; }
.bubble .txt { white-space: pre-wrap; }
.msg.bot .bubble { background: rgba(255, 255, 255, .06); border: 1px solid var(--line); border-top-left-radius: 4px; }
.msg.user .bubble { background: var(--grad); color: #03122e; border-top-right-radius: 4px; font-weight: 550; }
.caret { display: inline-block; width: 7px; height: 1em; background: var(--cyan); margin-left: 3px; vertical-align: -2px; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.chat-suggest { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 18px 12px; }
.chip-btn { font-family: inherit; font-size: .82rem; color: var(--muted); background: transparent; border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; cursor: pointer; }
.chip-btn:hover:not(:disabled) { color: var(--text); border-color: var(--line-strong); }
.chip-btn:disabled { opacity: .45; cursor: not-allowed; }
.chat-input { display: flex; gap: 10px; padding: 14px 18px; border-top: 1px solid var(--line); }
.chat-input input { flex: 1; }
.chat-note { margin: 0; padding: 0 18px 16px; font-size: .78rem; color: var(--muted); }

/* ---- modulo contatti ---- */
.contact-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 26px; align-items: start; }
.contact-side { display: grid; gap: 22px; }
.form-card { padding: 34px; }
.field { display: grid; gap: 7px; margin-bottom: 18px; }
.field > span { font-size: .85rem; font-weight: 650; color: var(--text); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
input, select, textarea {
    width: 100%; font-family: inherit; font-size: 1rem; color: var(--text);
    background: rgba(5, 16, 40, .75); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
}
select option { background: #0a1f4a; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(62, 225, 255, .18); }
textarea { resize: vertical; min-height: 140px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-errors { background: rgba(255, 90, 110, .1); border: 1px solid rgba(255, 90, 110, .45); border-radius: 12px; padding: 12px 16px; margin-bottom: 20px; color: #ffc2cb; }
.form-errors ul { list-style: none; display: grid; gap: 4px; }
.success { text-align: center; padding: 30px 10px; color: var(--cyan); }
.success h3 { color: var(--text); margin-top: 14px; }

/* ---- footer ---- */
.site-footer { border-top: 1px solid var(--line); background: rgba(4, 12, 32, .8); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding: 54px 0 30px; }
.footer-grid h4 { font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.footer-links { list-style: none; display: grid; gap: 8px; }
.footer-links a { color: var(--text); }
.footer-brand .muted { margin: 16px 0 10px; max-width: 36ch; }
.flow { font-size: .72rem; letter-spacing: .25em; color: var(--muted); }
.flow span { color: var(--cyan); margin: 0 6px; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding: 20px 0 34px; border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); }

/* ---- animazione di comparsa ---- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ---- responsive ---- */
@media (max-width: 980px) {
    .hero, .split, .lab-grid, .contact-grid { grid-template-columns: 1fr; }
    .grid-3, .case-grid { grid-template-columns: repeat(2, 1fr); }
    .pipeline { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); justify-content: center; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
    .nav-burger { display: grid; gap: 5px; cursor: pointer; padding: 10px; }
    .nav-burger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
    .nav-links {
        position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 6px;
        padding: 18px 20px 24px; background: rgba(6, 20, 48, .97); border-bottom: 1px solid var(--line);
        display: none;
    }
    .nav-toggle:checked ~ .nav-links { display: flex; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .lang-switch { align-self: flex-start; margin: 6px 0; }
}

@media (max-width: 640px) {
    .grid-2, .grid-3, .case-grid, .field-row, .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 48px 0; }
    .cta-band { padding: 28px; }
    .form-card { padding: 22px; }
    .hero { padding-top: 40px; }
    .chat-log { height: 320px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .art-frame { animation: none; }
    .js .reveal { opacity: 1; transform: none; transition: none; }
    .caret { animation: none; }
}

/* ==========================================================================
   Aggiunte per la versione statica
   ========================================================================== */
[hidden] { display: none !important; }

.skip-link {
    position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 10px;
    background: var(--cyan); color: #03122e; font-weight: 700;
}
.skip-link:focus { top: 12px; text-decoration: none; }

button.chip-link, a.chip-link { cursor: pointer; font-family: inherit; background: transparent; }

.consent { display: flex; align-items: flex-start; gap: 10px; margin: 4px 0 20px; font-size: .92rem; color: var(--muted); }
.consent input { width: 18px; height: 18px; margin-top: 3px; flex: none; accent-color: var(--cyan); }

.legal h2 { font-size: 1.3rem; margin-top: 1.6em; }
.legal p { font-size: 1.02rem; line-height: 1.75; color: #cfdcf3; }
.legal .box { margin-top: 18px; padding: 16px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--text); }

.nojs { color: var(--muted); }
.js .nojs { display: none; }
.lang-switch a[aria-current="true"] { pointer-events: none; }
.service-detail { scroll-margin-top: 96px; }

/* ---- pagina "in costruzione" ---- */
.uc { position: relative; z-index: 1; min-height: 100vh; min-height: 100svh; display: grid; place-items: center; padding: 48px 20px; text-align: center; }
.uc-inner { width: min(680px, 100%); }
.uc-mark { width: 120px; margin: 0 auto 22px; filter: drop-shadow(0 0 28px rgba(62, 225, 255, .55)); animation: float 7s ease-in-out infinite; }
.uc h1 { font-size: clamp(2rem, 6vw, 3.4rem); max-width: none; margin-bottom: .35em; }
.uc .lead { margin: 0 auto 6px; }
.uc-en { color: var(--muted); font-size: 1.02rem; margin-bottom: 26px; }
.uc-bar { width: min(320px, 80%); height: 4px; margin: 26px auto; border-radius: 4px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.uc-bar span { display: block; height: 100%; width: 38%; border-radius: 4px; background: var(--grad); animation: slide 2.2s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(290%); } }
.uc-flow { font-size: .75rem; letter-spacing: .25em; color: var(--muted); margin: 22px 0 6px; }
.uc-flow span { color: var(--cyan); margin: 0 6px; }
.uc-foot { margin-top: 38px; font-size: .8rem; color: var(--muted); }
.uc-foot a { color: var(--muted); border-bottom: 1px dotted var(--line-strong); }
.uc-foot a:hover { color: var(--text); text-decoration: none; }
@media (prefers-reduced-motion: reduce) { .uc-mark, .uc-bar span { animation: none; } }

/* ---- accesso riservato all'anteprima ---- */
.gate { position: relative; z-index: 1; min-height: 100vh; display: grid; place-items: center; padding: 30px 20px; }
.gate form { width: min(380px, 100%); }
.gate h1 { font-size: 1.6rem; max-width: none; }
.uc-mark { margin-bottom: 30px; }
.uc-flow { margin: 22px 0 26px; }
.copy-btn { margin-left: 10px; padding: 6px 12px; font: inherit; font-size: .85rem; color: inherit; background: transparent; border: 1px solid rgba(120,170,255,.35); border-radius: 999px; cursor: pointer; }
.copy-btn:hover, .copy-btn:focus-visible { border-color: #4fc3ff; }
.uc-mail { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: center; }
.uc-mail .copy-btn { margin-left: 0; }