/* =========================================================
   TOOLIO — Design system
   Minimal tech · system fonts · accento indaco
   ========================================================= */

:root{
  --accent:#4F46E5;
  --accent-dark:#4338CA;
  --accent-soft:#EEF0FE;
  --ink:#1A1B23;          /* testo principale */
  --ink-soft:#4B4D5C;     /* testo secondario */
  --muted:#8A8D9F;        /* didascalie */
  --line:#E6E7EE;         /* bordi */
  --bg:#FFFFFF;
  --bg-alt:#F7F8FB;       /* sezioni alternate */
  --ok:#0F9D58;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(20,21,35,.04), 0 6px 20px rgba(20,21,35,.06);
  --maxw:1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

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

h1,h2,h3{line-height:1.25;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:740;letter-spacing:-.02em}
h2{font-size:clamp(1.3rem,3vw,1.7rem);font-weight:700;letter-spacing:-.01em;margin-top:1.6em}
h3{font-size:1.12rem;font-weight:650}

/* ---------- Focus visibile (accessibilità) ---------- */
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:inline-flex;align-items:center;height:62px}
.brand:hover{text-decoration:none}
.brand-logo{height:30px;width:auto;display:block}
.brand-name{font-weight:740;font-size:1.1rem;letter-spacing:-.02em;color:var(--ink)}
.nav-list{display:flex;gap:.25rem;list-style:none;margin:0;padding:0;align-items:center}
.nav-list > li > a{color:var(--ink-soft);font-size:.95rem;font-weight:550;padding:.4rem .7rem;border-radius:8px;display:inline-block}
.nav-list > li > a:hover{background:var(--accent-soft);color:var(--accent-dark);text-decoration:none}

/* Categoria con dropdown */
.nav-item{position:relative}
.nav-cat{
  display:inline-flex;align-items:center;gap:.3rem;cursor:pointer;
  background:none;border:0;font:inherit;font-size:.95rem;font-weight:550;
  color:var(--ink-soft);padding:.4rem .7rem;border-radius:8px;
}
.nav-cat:hover{background:var(--accent-soft);color:var(--accent-dark)}
.nav-cat .caret{transition:transform .15s ease;font-size:1.05rem;line-height:1}
.nav-item.is-open .nav-cat,
.nav-item:hover .nav-cat{background:var(--accent-soft);color:var(--accent-dark)}
.nav-item.is-open .nav-cat .caret,
.nav-item:hover .nav-cat .caret{transform:rotate(90deg)}

/* Tendina (desktop): apertura sia su hover che su clic (.is-open) */
.dropdown{
  position:absolute;top:calc(100% + 6px);left:0;min-width:230px;
  list-style:none;margin:0;padding:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  box-shadow:var(--shadow);z-index:60;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
}
.nav-item:hover .dropdown,
.nav-item.is-open .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown li a{display:block;padding:.55rem .7rem;border-radius:7px;color:var(--ink-soft);font-size:.95rem}
.dropdown li a:hover{background:var(--accent-soft);color:var(--accent-dark);text-decoration:none}

/* Burger animato */
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;padding:8px;position:relative;z-index:120}
.burger-bar{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;transition:transform .25s ease, opacity .2s ease}
.nav-toggle[aria-expanded="true"] .burger-bar{background:#fff}
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .burger-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Layout principale ---------- */
.main-content{padding:38px 20px 56px;min-height:60vh}

/* ---------- Hero homepage ---------- */
.hero{text-align:center;padding:30px 0 14px}
.hero p.lead{font-size:1.15rem;color:var(--ink-soft);max-width:640px;margin:.4rem auto 0}

/* ---------- Griglia tool ---------- */
.cat-block{margin-top:40px}
.cat-block > h2{margin-bottom:.7em}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.tool-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;background:var(--bg);box-shadow:var(--shadow);
  transition:transform .15s ease, border-color .15s ease;
}
.tool-card:hover{transform:translateY(-3px);border-color:var(--accent);text-decoration:none}
.tool-card h3{margin:0 0 .3em;color:var(--ink)}
.tool-card p{margin:0;color:var(--ink-soft);font-size:.95rem}

/* ---------- Box del tool (l'area interattiva) ---------- */
.tool-box{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--bg-alt);padding:24px;margin:22px 0;box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.95rem;margin-bottom:6px;color:var(--ink)}
input[type=text],input[type=number],textarea,select{
  width:100%;font:inherit;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;
}
textarea{min-height:160px;resize:vertical;font-family:var(--font)}
input:focus,textarea:focus,select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}

.btn{
  display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;
  background:var(--accent);color:#fff;border:0;border-radius:var(--radius-sm);
  padding:12px 20px;font:inherit;font-weight:620;transition:background .15s ease;
}
.btn:hover{background:var(--accent-dark);text-decoration:none}
.btn-ghost{background:#fff;color:var(--accent);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--accent-soft)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- Statistiche / output ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:8px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;text-align:center}
.stat .num{font-size:1.7rem;font-weight:740;color:var(--accent-dark);font-variant-numeric:tabular-nums}
.stat .lbl{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.result-big{font-size:2rem;font-weight:760;color:var(--accent-dark);font-variant-numeric:tabular-nums}

/* ---------- Prosa SEO / FAQ ---------- */
.prose{max-width:100%}
.prose p,.prose li{color:var(--ink-soft)}
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);padding:0;margin-bottom:10px;background:#fff;overflow:hidden}
.faq summary{cursor:pointer;font-weight:600;padding:14px 16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq details > div{padding:0 16px 14px;color:var(--ink-soft)}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}

/* ---------- Slot AdSense ---------- */
.ad-slot{
  margin:26px auto;min-height:90px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-alt);border:1px dashed var(--line);border-radius:var(--radius-sm);
  overflow:hidden;
}
.ad-slot ins{width:100%}
.ad-footer{margin-top:30px}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);margin-top:50px;padding:40px 0 24px}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.footer-col h3.footer-heading{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:.6em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:.4em}
.footer-col a{color:var(--ink-soft);font-size:.95rem}
.footer-tagline{color:var(--muted);font-size:.92rem;margin:.4em 0 0}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:.88rem;color:var(--muted)}

/* ---------- Responsive ---------- */
@media (max-width:820px){
  .nav-toggle{display:block}

  /* Overlay fullscreen indaco */
  .nav-list{
    position:fixed;top:0;left:0;right:0;bottom:0;
    width:100vw;height:100vh;height:100dvh;z-index:110;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:.4rem;margin:0;padding:80px 24px 40px;list-style:none;
    background:var(--accent);
    opacity:0;visibility:hidden;transform:scale(1.04);
    transition:opacity .28s ease, transform .28s ease, visibility .28s;
    overflow-y:auto;
  }
  .nav-list.is-open{opacity:1;visibility:visible;transform:scale(1)}
  /* il backdrop-filter dell'header intrappolerebbe l'overlay fixed: lo annullo */
  body.nav-open .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:transparent;border-color:transparent}

  .nav-list > li{width:100%;max-width:340px;text-align:center}
  .nav-list .nav-home a{
    display:block;color:#fff;font-size:1.3rem;font-weight:600;
    padding:.7rem;border-radius:10px;
  }
  .nav-list .nav-home a:hover{background:rgba(255,255,255,.12);text-decoration:none}

  .nav-cat{
    width:100%;justify-content:center;gap:.5rem;
    color:#fff;font-size:1.3rem;font-weight:600;padding:.7rem;border-radius:10px;
  }
  .nav-cat:hover,.nav-item.is-open .nav-cat{background:rgba(255,255,255,.12);color:#fff}
  .nav-cat .caret{font-size:1.4rem;transition:transform .25s ease}
  .nav-item.is-open .nav-cat .caret{transform:rotate(90deg)}

  /* Sottovoci: accordion animato con max-height */
  .dropdown{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;background:transparent;border-radius:0;
    padding:0;margin:0;width:100%;
    max-height:0;overflow:hidden;
    transition:max-height .3s ease;
  }
  .nav-item.is-open .dropdown{max-height:60vh}
  .dropdown li a{
    display:block;color:rgba(255,255,255,.85);font-size:1.05rem;
    padding:.6rem;border-radius:8px;border:0;
  }
  .dropdown li a:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}

  .main-nav{position:static}
  body.nav-open{overflow:hidden}

  .footer-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .footer-cols{grid-template-columns:1fr}
}

/* ---------- Riduzione movimento ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* ---------- Identità: watermark hero ---------- */
/* ---------- Identità: watermark di pagina (logo reale, sfalsato a sinistra) ---------- */
.page-watermark{
  position:fixed;top:43%;left:27%;
  transform:translateX(-50%) translateY(-50%);
  height:192vh;width:auto;
  opacity:.03;z-index:0;pointer-events:none;overflow:hidden;
}
.page-watermark img{height:100%;width:auto;display:block}
/* il contenuto sta sopra il watermark */
.site-header{position:relative;z-index:40}
.main-content,.site-footer{position:relative;z-index:1}
body.nav-open .site-header{z-index:200}
.hero{position:relative}

/* ---------- Identità: logo nel footer ---------- */
.footer-logo{height:32px;width:auto;display:block;margin-bottom:.2em}
.footer-brand{max-width:280px}

/* ---------- Identità: accento-tag ricorrente nelle FAQ ---------- */
.faq summary::before{
  content:"›";color:var(--accent);font-weight:700;
  margin-right:.5rem;display:inline-block;
}

/* ---------- Identità: separatore di sezione col simbolo ---------- */
.sep{
  display:flex;align-items:center;gap:14px;
  border:0;margin:38px 0;color:var(--line);
}
.sep::before,.sep::after{content:"";flex:1;height:1px;background:var(--line)}
.sep .sep-mark{color:var(--accent);opacity:.5;display:inline-flex}
.sep .sep-mark svg{width:22px;height:22px;display:block}

/* ---------- Pagina 404 ---------- */
.error-page{text-align:center;padding:50px 20px 40px;max-width:560px;margin:0 auto}
.error-mark{width:200px;margin:0 auto 10px}
.error-mark img{width:100%;height:auto;display:block}
.error-page h1{font-size:clamp(3rem,12vw,5rem);margin:.1em 0;color:var(--accent-dark)}
.error-code{font-family:var(--mono);color:var(--muted);font-size:1.1rem;margin:0 0 1em}
.error-page .btn{margin-top:18px}

/* ── Votazione utilità tool ─────────────────────────────── */
.rate-box{margin:28px 0 4px;padding:18px 20px;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);text-align:center}
.rate-q{margin:0 0 8px;font-weight:600;color:var(--ink)}
.rate-stars{display:inline-flex;gap:4px;margin-bottom:6px}
.rate-star{font-size:1.9rem;line-height:1;background:none;border:none;cursor:pointer;color:var(--line);padding:0 2px;transition:color .12s ease,transform .12s ease}
.rate-star:hover{transform:scale(1.12)}
.rate-star.on{color:#F5B400}
.rate-meta{margin:4px 0 0;color:var(--ink-soft);font-size:.95rem}
.rate-meta .rate-avg{font-weight:700;color:var(--ink)}
.rate-empty{color:var(--muted)}
.rate-thanks{margin:6px 0 0;color:var(--ok);font-weight:600;font-size:.95rem}