/* =========================================================
   Elmi Elettromeccanica - foglio di stile unico
   Sobrio: bianco, grafite, giallo Elmi solo come accento
   ========================================================= */
:root {
  --ink: #15191f;
  --ink-2: #2b313b;
  --muted: #5d6673;
  --line: #e3e6eb;
  --bg: #ffffff;
  --bg-alt: #f5f6f8;
  --dark: #121519;
  --dark-2: #1b2027;
  --accent: #f2c200;          /* giallo del logo */
  --accent-ink: #1a1500;
  --radius: 12px;
  --max: 1160px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.015em; margin: 0 0 .5em; }
h1 { font-size: clamp(32px, 5vw, 54px); font-weight: 750; }
h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 700; }
h3 { font-size: 19px; font-weight: 650; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.kicker { display: inline-block; font-size: 13px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.kicker::before { content: ""; display: inline-block; width: 22px; height: 3px; background: var(--accent); vertical-align: middle; margin-right: 10px; border-radius: 2px; }

/* ---------- testata ---------- */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header .wrap { display: flex; align-items: center; gap: 24px; height: 72px; }
.logo { display: flex; align-items: baseline; gap: 8px; text-decoration: none; color: var(--ink); }
.logo b { font-size: 26px; font-weight: 800; letter-spacing: -.03em; background: var(--accent); color: var(--accent-ink); padding: 0 8px; border-radius: 6px; line-height: 1.25; }
.logo span { font-size: 14px; color: var(--muted); letter-spacing: .02em; }
.nav { margin-left: auto; display: flex; gap: 4px; }
.nav a { text-decoration: none; color: var(--ink-2); font-weight: 550; font-size: 15px; padding: 8px 12px; border-radius: 8px; }
.nav a:hover { background: var(--bg-alt); }
.nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--accent); border-radius: 0; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px; font-weight: 650; font-size: 15px; text-decoration: none; border: 1px solid transparent; transition: filter .15s, background .15s; }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { filter: brightness(.95); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.08); }
.btn-line { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-line:hover { background: var(--bg-alt); }
.nav .btn { margin-left: 8px; padding: 8px 14px; }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; font: 600 14px var(--font); color: var(--ink); cursor: pointer; }

/* ---------- apertura ---------- */
.hero { background: var(--dark); color: #fff; position: relative; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: center; padding-top: 88px; padding-bottom: 88px; }
.hero .kicker { color: #aab3bf; }
.hero p.lead { font-size: 19px; color: #c9d0d9; max-width: 620px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero svg { width: 100%; max-width: 360px; justify-self: end; color: #3a424d; }
.hero--small .wrap { grid-template-columns: 1fr; padding-top: 64px; padding-bottom: 56px; }
.hero--small h1 { font-size: clamp(30px, 4vw, 44px); }

/* ---------- numeri ---------- */
.stats { border-bottom: 1px solid var(--line); }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 30px 20px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b { display: block; font-size: 34px; font-weight: 750; letter-spacing: -.02em; }
.stat span { color: var(--muted); font-size: 14px; }

/* ---------- sezioni ---------- */
.section { padding: 88px 0; }
.section--alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head p { color: var(--muted); font-size: 17px; }
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card .num { font-size: 13px; font-weight: 700; color: var(--muted); letter-spacing: .1em; }
.card h3 { margin-top: 10px; }
.card p { color: var(--muted); }
.card .more { font-weight: 650; text-decoration: none; border-bottom: 2px solid var(--accent); }
.card--link { transition: border-color .15s, transform .15s; }
.card--link:hover { border-color: #c9ced6; transform: translateY(-2px); }

.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.checks li { padding-left: 32px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 50%; background: var(--accent); }
.checks li::after { content: ""; position: absolute; left: 7px; top: 8px; width: 5px; height: 9px; border: solid var(--accent-ink); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.checks b { display: block; }
.checks span { color: var(--muted); }

.steps { counter-reset: s; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.steps li { list-style: none; counter-increment: s; border-top: 3px solid var(--ink); padding-top: 14px; }
.steps li::before { content: "0" counter(s); display: block; font-weight: 750; color: var(--muted); font-size: 13px; letter-spacing: .1em; margin-bottom: 6px; }
.steps { padding: 0; margin: 0; }
.steps b { display: block; }
.steps span { color: var(--muted); font-size: 15px; }

.figure { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #fff; }
.figure figcaption { font-size: 13px; color: var(--muted); padding: 10px 14px; border-top: 1px solid var(--line); }
.figure--photo { max-width: 340px; justify-self: center; }
.figure--shot { box-shadow: 0 30px 60px -30px rgba(18,21,25,.45); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.tags li { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 4px 12px; font-size: 14px; }

/* referenze */
.ref { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.ref th, .ref td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.ref th { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); background: var(--bg-alt); }
.ref td.n { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; width: 90px; }
.ref tfoot td { font-weight: 750; background: var(--bg-alt); border-bottom: 0; }

/* banda finale */
.cta { background: var(--dark); color: #fff; }
.cta .wrap { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-top: 64px; padding-bottom: 64px; flex-wrap: wrap; }
.cta h2 { margin: 0; }
.cta p { color: #c9d0d9; margin: 6px 0 0; }

/* contatti */
.contact-list { display: grid; gap: 18px; }
.contact-list .card b { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 4px; }
.contact-list .card a { font-size: 19px; font-weight: 650; text-decoration: none; }

/* testo lungo (privacy) */
.prose { max-width: 760px; }
.prose h2 { font-size: 22px; margin-top: 1.6em; }

/* segnaposto da completare: ben visibile */
mark.todo { background: #ffe9a3; color: #5a4300; padding: 0 4px; border-radius: 4px; font-weight: 600; }

/* ---------- piede ---------- */
.footer { background: var(--dark-2); color: #aab3bf; font-size: 14px; }
.footer .wrap { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; padding-top: 48px; padding-bottom: 32px; }
.footer h4 { color: #fff; font-size: 14px; margin: 0 0 10px; }
.footer a { color: #d6dbe1; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.footer .legal { border-top: 1px solid #2c333c; grid-column: 1 / -1; padding-top: 18px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer .logo b { font-size: 22px; }
.footer .logo span { color: #aab3bf; }

/* ---------- schermi piccoli ---------- */
@media (max-width: 960px) {
  .hero .wrap, .split { grid-template-columns: 1fr; }
  .hero svg { position: absolute; right: -40px; bottom: -10px; width: 230px; opacity: .45; pointer-events: none; }
  .hero .wrap > div { position: relative; z-index: 1; }
  .grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat { border-top: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .footer .wrap { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; background: #fff; border-bottom: 1px solid var(--line); padding: 10px 24px 18px; }
  .nav.is-open { display: flex; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
  .section { padding: 64px 0; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
  .logo span { display: none; }
}

/* pale della turbina in apertura: rotazione lenta */
.hero .pale { transform-origin: 150px 137px; animation: gira 14s linear infinite; }
@keyframes gira { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .hero .pale { animation: none; } }

/* referenze: tabella a 4 colonne, scorre di lato sui telefoni */
.table-scroll { overflow-x: auto; border-radius: var(--radius); }
.ref td.sol { color: var(--muted); }
@media (max-width: 640px) { .ref { min-width: 560px; } }