/* ============================================================
   DueConti — design system
   Palette: lavanda chiaro / indaco profondo / corallo / verde
   ============================================================ */
:root{
  --bg:#F7F6FB;
  --surface:#FFFFFF;
  --ink:#161A33;
  --muted:#6A6E87;
  --coral:#F4715F;
  --coral-dark:#E25A48;
  --blue:#2F6FF4;
  --green:#2FB389;
  --border:#E7E6F0;
  --shadow:0 1px 2px rgba(22,26,51,.04),0 12px 32px rgba(22,26,51,.07);
  --shadow-lg:0 24px 60px rgba(22,26,51,.14);
  --radius:18px;
  --radius-sm:12px;
  --maxw:1120px;
  --font-display:"Bricolage Grotesque",-apple-system,system-ui,sans-serif;
  --font-body:"Inter",-apple-system,system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--bg);color:var(--ink);
  line-height:1.6;-webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 0;
}
.num{font-variant-numeric:tabular-nums}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.08;letter-spacing:-.02em;font-weight:700}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font-family:var(--font-body);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(244,113,95,.32)}
.btn-primary:hover{background:var(--coral-dark);box-shadow:0 12px 26px rgba(244,113,95,.42)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{opacity:.9}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,246,251,.82);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-color:var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:700;font-size:20px}
.logo-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--coral),var(--blue));display:grid;place-items:center;color:#fff;font-size:15px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:14.5px;color:var(--muted);font-weight:500}
.nav-links a:hover{color:var(--ink)}
@media(max-width:780px){.nav-links a.hide-sm{display:none}}

/* ---------- hero ---------- */
.hero{padding:64px 0 40px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr;gap:36px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--coral-dark);background:#FFEDE9;padding:6px 13px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(38px,5.4vw,62px);margin-bottom:20px}
.hero h1 .hl{color:var(--coral);position:relative}
.hero p.lead{font-size:19px;color:var(--muted);max-width:30em;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-size:13.5px;color:var(--muted);margin-top:16px;display:flex;gap:7px;align-items:center}

/* ---------- signature: bilancia proporzionale ---------- */
.split-card{background:var(--surface);border-radius:24px;box-shadow:var(--shadow-lg);padding:30px;border:1px solid var(--border)}
.split-card h3{font-size:19px;margin-bottom:4px}
.split-card .sub{font-size:13.5px;color:var(--muted);margin-bottom:24px}
.slider-row{margin-bottom:20px}
.slider-row label{display:flex;justify-content:space-between;font-size:14px;font-weight:600;margin-bottom:9px}
.slider-row label .val{font-variant-numeric:tabular-nums}
.slider-row label .val.a{color:var(--coral)}
.slider-row label .val.b{color:var(--blue)}
input[type=range]{-webkit-appearance:none;width:100%;height:7px;border-radius:99px;background:var(--border);outline:none}
input[type=range].a{background:linear-gradient(90deg,var(--coral) 0%,var(--coral) var(--p,50%),var(--border) var(--p,50%))}
input[type=range].b{background:linear-gradient(90deg,var(--blue) 0%,var(--blue) var(--p,50%),var(--border) var(--p,50%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:#fff;border:3px solid var(--ink);cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.18)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--ink);cursor:pointer}

.split-bar{height:46px;border-radius:12px;overflow:hidden;display:flex;margin:22px 0 10px;box-shadow:inset 0 0 0 1px var(--border)}
.split-bar .seg{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;transition:flex-basis .5s cubic-bezier(.22,1,.36,1);font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden}
.split-bar .seg.a{background:var(--coral)}
.split-bar .seg.b{background:var(--blue)}
.split-legend{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}
.example{margin-top:22px;padding-top:20px;border-top:1px dashed var(--border)}
.example .ex-head{font-size:13px;color:var(--muted);margin-bottom:12px}
.example .ex-row{display:flex;justify-content:space-between;align-items:baseline;padding:7px 0}
.example .ex-row .who{font-weight:600;display:flex;align-items:center;gap:8px}
.example .ex-row .who .dot{width:10px;height:10px;border-radius:50%}
.example .ex-row .amt{font-size:21px;font-weight:700;font-variant-numeric:tabular-nums}
.dot.a,.amt.a{color:var(--coral)}.dot.a{background:var(--coral)}
.dot.b,.amt.b{color:var(--blue)}.dot.b{background:var(--blue)}

/* ---------- sections ---------- */
section{padding:84px 0}
.section-head{text-align:center;max-width:38em;margin:0 auto 52px}
.section-head .tag{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--coral);margin-bottom:14px;display:block}
.section-head h2{font-size:clamp(30px,4vw,44px);margin-bottom:16px}
.section-head p{font-size:17px;color:var(--muted)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.step .n{font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--coral);background:#FFEDE9;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;margin-bottom:18px}
.step h3{font-size:20px;margin-bottom:9px}
.step p{color:var(--muted);font-size:15px}

/* features grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:900px){.features{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.features{grid-template-columns:1fr}}
.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .2s,box-shadow .2s}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .ico{font-size:26px;width:50px;height:50px;border-radius:13px;display:grid;place-items:center;background:var(--bg);margin-bottom:16px}
.feature h3{font-size:17.5px;margin-bottom:7px}
.feature p{font-size:14.5px;color:var(--muted)}

/* dark band */
.band{background:var(--ink);color:#fff;border-radius:28px;padding:56px 44px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
@media(max-width:820px){.band{grid-template-columns:1fr;padding:40px 28px}}
.band h2{font-size:clamp(28px,3.6vw,40px);color:#fff;margin-bottom:14px}
.band p{color:#B9BCD4;font-size:16px}
.band .privacy-list{list-style:none;display:grid;gap:14px}
.band .privacy-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#E4E5F0}
.band .privacy-list .chk{color:var(--green);font-weight:700;flex-shrink:0}

/* pricing */
.price-card{max-width:440px;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow-lg);padding:40px;text-align:center;position:relative;overflow:hidden}
.price-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--coral),var(--blue))}
.price-badge{display:inline-block;font-size:12.5px;font-weight:700;color:var(--green);background:#E6F7F1;padding:5px 13px;border-radius:999px;margin-bottom:18px}
.price-amount{font-family:var(--font-display);font-size:64px;font-weight:700;line-height:1}
.price-amount .cur{font-size:32px;vertical-align:top}
.price-sub{color:var(--muted);font-size:15px;margin:6px 0 26px}
.price-list{list-style:none;text-align:left;display:grid;gap:13px;margin-bottom:28px}
.price-list li{display:flex;gap:11px;font-size:15px}
.price-list .chk{color:var(--green);font-weight:700}

/* faq */
.faq{max-width:760px;margin:0 auto;display:grid;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 22px;cursor:pointer}
.faq summary{font-weight:600;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--coral);font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq p{color:var(--muted);font-size:15px;margin-top:12px}

/* footer */
footer{padding:54px 0 40px;border-top:1px solid var(--border);color:var(--muted);font-size:14px}
.foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.split-bar .seg{transition:none}}

/* ---------- auth page ---------- */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:40px 20px}
.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow-lg);padding:38px}
.auth-card .logo{justify-content:center;margin-bottom:8px}
.auth-card .tabs{display:flex;background:var(--bg);border-radius:12px;padding:5px;margin:22px 0 24px}
.auth-card .tabs button{flex:1;border:none;background:transparent;padding:10px;border-radius:9px;font-weight:600;font-family:var(--font-body);font-size:14.5px;cursor:pointer;color:var(--muted)}
.auth-card .tabs button.active{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.06)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px}
.field input{width:100%;padding:13px 15px;border:1.5px solid var(--border);border-radius:12px;font-size:15px;font-family:var(--font-body);transition:border-color .15s}
.field input:focus{outline:none;border-color:var(--coral)}
.err{color:var(--coral-dark);font-size:13.5px;margin-bottom:14px;min-height:0}
.auth-foot{text-align:center;font-size:13px;color:var(--muted);margin-top:20px}