/* =============================================================================
 *  SIGNALS ROOM - sito nuovo · style.css
 *  Tema IBRIDO: hero scuro (cinematico) + contenuto CHIARO.
 *  Effetti 3D allo scroll senza dipendenze pesanti (niente backdrop-filter /
 *  will-change su grandi aree → il browser non va in crisi).
 * ========================================================================== */

:root{
	/* chiaro (corpo del sito) */
	--bg:#f5f7fb;
	--bg-alt:#ffffff;
	--text:#0d1626;
	--muted:#5a6a80;
	--muted-2:#8794a7;
	--line:rgba(13,22,38,.10);
	--surface:#ffffff;
	--shadow:0 18px 40px -26px rgba(13,22,38,.35);

	/* scuro (hero, CTA, footer) */
	--dark:#060a12;
	--dark-2:#0a111d;
	--d-text:#eef3fb;
	--d-muted:#9aa8bd;
	--d-line:rgba(255,255,255,.10);

	/* accento */
	--green:#12a150;
	--green-2:#0e8a44;
	--green-light:#e7f6ee;
	--red:#e0475b;

	--radius:18px;
	--radius-sm:12px;
	--maxw:1200px;
	--ease:cubic-bezier(.22,.61,.36,1);
	--font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
	--font-d:"Space Grotesk","Inter",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
	margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
	font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit}

/* ── tipografia ───────────────────────────────────────────────────────────── */
h1,h2,h3,h4{font-family:var(--font-d);line-height:1.06;letter-spacing:-.02em;margin:0;font-weight:600}
.h1{font-size:clamp(2.5rem,6.4vw,5.4rem)}
.h2{font-size:clamp(1.9rem,4.3vw,3.4rem)}
.h3{font-size:clamp(1.35rem,2.3vw,1.9rem)}
.lead{font-size:clamp(1.05rem,1.5vw,1.3rem);color:var(--muted);max-width:62ch}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--green);margin:0 0 .9rem}
.eyebrow.is-grey{color:var(--muted-2)}

/* ── layout ───────────────────────────────────────────────────────────────── */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,48px)}
.section{position:relative;padding-block:clamp(70px,10vw,140px)}
.section.alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:clamp(34px,5.5vw,68px)}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .lead{margin-inline:auto}

/* ── bottoni ──────────────────────────────────────────────────────────────── */
.btn{
	display:inline-flex;align-items:center;gap:.55rem;cursor:pointer;border:0;white-space:nowrap;
	padding:1rem 1.6rem;border-radius:999px;font-weight:600;font-size:.98rem;
	transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(180deg,#1fbb64,var(--green-2));color:#fff;box-shadow:0 12px 26px -12px rgba(18,161,80,.75)}
.btn-primary:hover{box-shadow:0 16px 34px -12px rgba(18,161,80,.9)}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--bg)}
.btn-on-dark{background:rgba(255,255,255,.08);color:#fff;border:1px solid var(--d-line)}
.btn-on-dark:hover{background:rgba(255,255,255,.16)}
.btn-link{padding:0;background:none;color:var(--green);font-weight:600}
.btn-sm{padding:.66rem 1.1rem;font-size:.9rem}

/* ── nav ──────────────────────────────────────────────────────────────────── */
.nav{
	position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;
	padding-block:1rem;color:var(--d-text);border-bottom:1px solid transparent;
	transition:background .3s,color .3s,border-color .3s,box-shadow .3s;
}
.nav.scrolled{background:rgba(255,255,255,.96);color:var(--text);border-bottom-color:var(--line);box-shadow:0 10px 30px -26px rgba(13,22,38,.6)}
.nav .wrap{display:flex;align-items:center;gap:1.2rem}
.nav-brand{display:flex;align-items:center;flex-shrink:0}
/* logo GRANDE in cima alla pagina, rimpicciolisce quando si scorre */
.nav .nav-brand img{height:84px;width:auto;transition:height .35s var(--ease)}
.nav.scrolled .nav-brand img{height:42px}
.footer .nav-brand img{height:44px;width:auto}
.nav-links{display:flex;gap:1.5rem;margin-left:auto}
.nav-links .only-mobile{display:none}
.nav-links a{font-size:.95rem;opacity:.85;transition:opacity .2s}
.nav-links a:hover{opacity:1}
.nav-cta{display:flex;gap:.6rem;align-items:center}
.nav-burger{display:none;background:none;border:0;color:inherit;font-size:1.5rem;line-height:1;cursor:pointer;padding:.3rem .5rem}
/* logo: bianco sull'hero, nero quando la nav diventa chiara */
.logo-dark{display:none}
.nav.scrolled .logo-light{display:none}
.nav.scrolled .logo-dark{display:block}
.nav.scrolled .btn-ghost{background:var(--bg);color:var(--text)}

/* ── hero (scuro, cinematico) ─────────────────────────────────────────────── */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;color:var(--d-text);overflow:clip;background:var(--dark)}
.hero-bg{position:absolute;inset:-6% 0 0;z-index:0;background:url(../img/header.jpg) center/cover no-repeat}
.hero-bg::after{
	content:"";position:absolute;inset:0;
	background:
		radial-gradient(120% 90% at 80% 18%,rgba(18,161,80,.20),transparent 55%),
		linear-gradient(180deg,rgba(6,10,18,.42),rgba(6,10,18,.70) 68%,rgba(6,10,18,.95));
}
.hero .wrap{position:relative;z-index:2;padding-top:168px;padding-bottom:120px}
.hero-inner{max-width:760px}
.hero h1{margin-bottom:1.3rem;text-shadow:0 30px 60px rgba(0,0,0,.35)}
.hero h1 .grad{background:linear-gradient(100deg,#8affc1,var(--green) 55%,#19c97a);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{color:rgba(238,243,251,.82);text-shadow:0 2px 20px rgba(0,0,0,.4)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin:2rem 0 1.4rem}
.hero-facts{display:flex;flex-wrap:wrap;gap:1.3rem;color:var(--d-muted);font-size:.92rem}
.hero-facts i{color:var(--green);font-style:normal}

.signal-card{
	position:absolute;right:0;top:50%;transform:translateY(-50%) perspective(900px);
	width:330px;z-index:3;color:var(--d-text);
	background:linear-gradient(180deg,rgba(14,20,32,.94),rgba(8,12,20,.94));
	border:1px solid var(--d-line);border-radius:var(--radius);padding:1.3rem 1.4rem;
	box-shadow:0 40px 80px -30px rgba(0,0,0,.85);
}
.signal-card .sc-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:.9rem}
.signal-card .sc-pair{font-family:var(--font-d);font-weight:600;font-size:1.22rem}
.signal-card .sc-tag{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green)}
.signal-card .sc-row{display:flex;justify-content:space-between;font-size:.92rem;color:var(--d-muted);padding:.34rem 0;border-top:1px dashed rgba(255,255,255,.08)}
.signal-card .sc-row b{color:var(--d-text)}
.signal-card .sc-res{margin-top:.9rem;display:flex;justify-content:space-between;font-weight:700}
.signal-card .sc-res .up{color:var(--green)}
.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:2;color:var(--d-muted);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase}
.scroll-hint::after{content:"";display:block;width:1px;height:38px;margin:.6rem auto 0;background:linear-gradient(var(--d-muted),transparent)}

/* ── strip scorrevole ─────────────────────────────────────────────────────── */
.strip{background:var(--dark-2);border-block:1px solid var(--d-line);overflow:hidden}
.strip-track{display:flex;gap:3rem;white-space:nowrap;padding-block:1rem;animation:marquee 40s linear infinite}
.strip span{color:var(--d-muted);font-size:.82rem;letter-spacing:.16em;text-transform:uppercase}
.strip span b{color:var(--d-text)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ── rivelazioni 3D allo scroll (CSS puro, sempre visibili senza JS) ──────── */
.section,.cards,.steps,.stats,.price-grid,.free-grid{perspective:1600px}
html.js .reveal{opacity:0;transform:translateY(54px) rotateX(-14deg) scale(.965);transform-origin:50% 100%}
html.js .reveal.in{
	opacity:1;transform:none;
	transition:opacity .95s var(--ease),transform .95s var(--ease);
}
html.js .reveal.d1.in{transition-delay:.09s}
html.js .reveal.d2.in{transition-delay:.18s}
html.js .reveal.d3.in{transition-delay:.27s}
html.js .reveal.d4.in{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
	html.js .reveal{opacity:1;transform:none;transition:none}
	.strip-track{animation:none}
}

/* ── risultati ────────────────────────────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem 1.5rem;box-shadow:var(--shadow)}
.stat .n{font-family:var(--font-d);font-size:clamp(2rem,3.8vw,3rem);font-weight:600;line-height:1}
.stat .n.green{color:var(--green)}
.stat .n.gold{color:#c8901f}
.stat .k{color:var(--muted);font-size:.85rem;margin-top:.55rem}
.results-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,4vw,56px);align-items:center}
.results-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);box-shadow:var(--shadow)}
.results-list .rl-head{display:flex;justify-content:space-between;padding:.9rem 1.2rem;border-bottom:1px solid var(--line);font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.results-list .rl-row{display:flex;align-items:center;gap:.7rem;padding:.78rem 1.2rem;border-bottom:1px solid rgba(13,22,38,.06);font-variant-numeric:tabular-nums}
.results-list .rl-row:last-child{border-bottom:0}
.rl-pair{font-weight:600;flex:1}
.rl-res{color:var(--muted);font-size:.9rem}
.rl-pct{font-weight:700;min-width:74px;text-align:right}
.rl-pct.up{color:var(--green)}
.rl-pct.down{color:var(--red)}

/* ── come funziona ────────────────────────────────────────────────────────── */
.how-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(24px,5vw,64px);align-items:start}
.how-sticky{position:sticky;top:110px}
.steps{display:grid;gap:1.1rem}
.step{display:grid;grid-template-columns:66px 1fr;gap:1.3rem;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem 1.7rem;box-shadow:var(--shadow)}
.step .num{font-family:var(--font-d);font-size:1.5rem;color:var(--green);font-weight:700}
.step h3{margin-bottom:.35rem}
.step p{color:var(--muted);margin:0}

/* ── feature ──────────────────────────────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.9rem 1.7rem;box-shadow:var(--shadow);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.card:hover{transform:translateY(-6px);border-color:rgba(18,161,80,.45);box-shadow:0 26px 50px -30px rgba(13,22,38,.5)}
.card .ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:var(--green-light);color:var(--green);font-size:1.35rem;margin-bottom:1.1rem}
.card h3{font-size:1.18rem;margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.96rem;margin:0}

/* ── gratis per sempre ────────────────────────────────────────────────────── */
.free-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.free-card{border:1px solid rgba(18,161,80,.3);border-radius:var(--radius);padding:2.2rem 2rem;background:linear-gradient(180deg,var(--green-light),#fff);box-shadow:var(--shadow)}
.free-card .big{font-family:var(--font-d);font-size:clamp(1.7rem,3.2vw,2.5rem);line-height:1.06;margin:.4rem 0 .8rem}
.free-card p{color:var(--muted);margin:0}

/* ── prezzo ───────────────────────────────────────────────────────────────── */
.price-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;max-width:900px;margin-inline:auto}
.plan{border:1px solid var(--line);border-radius:var(--radius);padding:2.4rem 2rem;background:var(--surface);position:relative;box-shadow:var(--shadow)}
.plan.hot{border-color:rgba(18,161,80,.5);background:linear-gradient(180deg,var(--green-light),#fff)}
.plan .badge{position:absolute;top:-12px;left:2rem;background:var(--green);color:#fff;font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:.32rem .7rem;border-radius:999px}
.plan .amount{font-family:var(--font-d);font-size:clamp(2.5rem,4.8vw,3.5rem);font-weight:600;line-height:1}
.plan .amount small{font-size:.95rem;color:var(--muted);font-weight:400}
.plan ul{list-style:none;padding:1.4rem 0 0;margin:1.4rem 0 0;border-top:1px solid var(--line);display:grid;gap:.7rem}
.plan li{display:flex;gap:.7rem;color:var(--muted);font-size:.96rem}
.plan li::before{content:"✓";color:var(--green);font-weight:700}

/* ── FAQ ──────────────────────────────────────────────────────────────────── */
.faq{max-width:820px;margin-inline:auto;display:grid;gap:.7rem}
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);overflow:hidden;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;list-style:none;padding:1.1rem 1.4rem;font-weight:600;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--green);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"-"}
.faq .a{padding:0 1.4rem 1.2rem;color:var(--muted)}

/* ── CTA (scura) ──────────────────────────────────────────────────────────── */
.cta-band{
	border-radius:calc(var(--radius) + 6px);padding:clamp(2.4rem,6vw,4.4rem);text-align:center;color:var(--d-text);
	background:radial-gradient(90% 140% at 50% 0%,rgba(18,161,80,.28),transparent 60%),var(--dark-2);
	box-shadow:0 40px 80px -50px rgba(6,10,18,.9);
}
.cta-band .h2{margin-bottom:1rem}
.cta-band .lead{color:var(--d-muted);margin-inline:auto}
.cta-band .actions{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;margin-top:1.8rem}

/* ── piattaforme ──────────────────────────────────────────────────────────── */
.brands{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}
.brands a{border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.6rem;background:var(--surface);display:grid;place-items:center;min-width:150px;box-shadow:var(--shadow);transition:transform .3s var(--ease),border-color .3s}
.brands a:hover{transform:translateY(-3px);border-color:rgba(18,161,80,.4)}
.brands img{height:28px;width:auto;opacity:.9}

/* ── contatto ─────────────────────────────────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(24px,5vw,64px)}
.field{display:grid;gap:.45rem;margin-bottom:1rem}
.field label{font-size:.85rem;color:var(--muted)}
.field input,.field textarea{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:.9rem 1rem;color:var(--text);font:inherit;outline:none;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(18,161,80,.12)}
.check{display:flex;gap:.6rem;align-items:flex-start;color:var(--muted);font-size:.9rem}
.check input{width:18px;height:18px;margin-top:.15rem}
.form-msg{margin:0 0 1.1rem;padding:.85rem 1rem;border:1px solid transparent;border-radius:var(--radius-sm);font-size:.92rem;line-height:1.5}
.form-msg.ok{background:var(--green-light);border-color:rgba(18,161,80,.45);color:#0c6b37}
.form-msg.err{background:rgba(224,71,91,.10);border-color:rgba(224,71,91,.45);color:#9c2739}

/* ── footer (scuro) ───────────────────────────────────────────────────────── */
.footer{background:var(--dark);color:var(--d-muted);padding-block:3.2rem 2.4rem;font-size:.92rem;border-top:1px solid var(--d-line)}
.footer .cols{display:flex;flex-wrap:wrap;gap:1.4rem;justify-content:space-between;align-items:center}
.footer .nav-links a{color:var(--d-muted)}
.footer .nav-links a:hover{color:#fff}
.footer .disclaimer{margin-top:1.8rem;font-size:.8rem;color:#6f7d92;max-width:82ch}

/* ── progress ─────────────────────────────────────────────────────────────── */
.progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:60;background:linear-gradient(90deg,var(--green),#8affc1)}

/* ── responsive ───────────────────────────────────────────────────────────── */
@media (max-width:1080px){
	.signal-card{position:static;transform:none;width:100%;max-width:420px;margin-top:2.2rem}
	.hero .wrap{padding-bottom:80px}
	.results-grid,.contact-grid,.how-grid{grid-template-columns:1fr}
	.how-sticky{position:static;top:auto}
	.cards{grid-template-columns:repeat(2,1fr)}
}
/* nav: sotto i 980px passa al menu a tendina (a larghezze medie i bottoni si rompevano) */
@media (max-width:980px){
	.nav .nav-links{
		display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:.1rem;
		padding:1rem 1.4rem 1.4rem;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 40px -30px rgba(13,22,38,.6);
	}
	.nav.open{color:var(--text);background:rgba(255,255,255,.98);border-bottom-color:var(--line)}
	.nav.open .logo-light{display:none}
	.nav.open .logo-dark{display:block}
	.nav.open .nav-links{display:flex}
	.nav .nav-links a{padding:.55rem 0;font-size:1.05rem;color:var(--text);opacity:1}
	.nav-burger{display:block;margin-left:auto}
	.nav-cta .btn-ghost{display:none}
	.nav .nav-brand img{height:48px}
	.nav.scrolled .nav-brand img{height:34px}
	.nav .nav-links .only-mobile{display:block}
}
@media (max-width:820px){
	.stats{grid-template-columns:repeat(2,1fr)}
	.free-grid,.price-grid{grid-template-columns:1fr}
	.cards{grid-template-columns:1fr}
	.step{grid-template-columns:1fr;gap:.35rem}
	.hero .wrap{padding-top:104px}
	.hero-facts{gap:.7rem;font-size:.88rem}
}
@media (max-width:440px){
	.nav-cta .btn-sm{padding:.58rem .9rem;font-size:.85rem}
	.hero .wrap{padding-top:96px}
}