/* Strumenti gratuiti — stessa palette del sito (v. index.html), tenuta in un
   file solo: tre pagine che copiano lo stesso CSS divergono al primo ritocco. */
:root {
  --bg: #050914;
  --panel: rgba(255, 255, 255, 0.075);
  --line: rgba(255, 255, 255, 0.13);
  --text: #f7fbff;
  --muted: #aab8cf;
  --soft: #dbe8ff;
  --cyan: #2df5d0;
  --blue: #62a8ff;
  --purple: #8b6cff;
  --ok: #34d399;
  --warn: #fbbf24;
  --radius: 22px;
  --max: 980px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text); line-height: 1.55; overflow-x: hidden;
  background:
    radial-gradient(circle at 10% -5%, rgba(45,245,208,.20), transparent 36%),
    radial-gradient(circle at 86% 6%, rgba(98,168,255,.20), transparent 34%),
    linear-gradient(180deg, #050914 0%, #07111f 42%, #030611 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
.container { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }

header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(22px);
  background: rgba(5,9,20,.66); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: flex; align-items: center; gap: 11px; font-weight: 900; letter-spacing: -.045em; font-size: 1.2rem; }
.logo-mark { width: 38px; height: 38px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--cyan), var(--blue)); color: #03101c; font-weight: 950; }
.nav-links { display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: .92rem; font-weight: 600; }
.nav-links a:hover { color: #fff; }
.nav-btn { padding: 10px 16px; border-radius: 999px; color: #04101a; font-weight: 850;
  background: linear-gradient(135deg, var(--cyan), var(--blue)); }

main { padding: 46px 0 80px; }
.eyebrow { display: inline-block; padding: 5px 13px; border-radius: 999px; font-size: .74rem;
  font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: #03101c;
  background: linear-gradient(135deg, var(--cyan), var(--blue)); margin-bottom: 14px; }
h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); letter-spacing: -.03em; line-height: 1.15; margin-bottom: 12px; }
h2 { font-size: 1.15rem; margin-bottom: 10px; letter-spacing: -.02em; }
.lead { color: var(--soft); font-size: 1.03rem; max-width: 62ch; }
.muted { color: var(--muted); }
.small { font-size: .87rem; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; margin-top: 20px; backdrop-filter: blur(8px); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 780px) { .grid2 { grid-template-columns: 1fr; } }

label { display: block; font-weight: 700; font-size: .9rem; margin: 14px 0 6px; }
label .hint { display: block; font-weight: 500; font-size: .8rem; color: var(--muted); margin-top: 2px; }
input[type=number], input[type=text], select {
  width: 100%; padding: 11px 13px; border-radius: 12px; font-size: 1rem; font-family: inherit;
  background: rgba(255,255,255,.06); border: 1px solid var(--line); color: var(--text);
}
input:focus, select:focus { outline: 2px solid rgba(45,245,208,.45); outline-offset: 1px; }
.riga-check { display: flex; align-items: flex-start; gap: 10px; margin-top: 14px; font-size: .92rem; }
.riga-check input { margin-top: 4px; width: 18px; height: 18px; flex: 0 0 auto; }
.preset { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.preset button { padding: 7px 13px; border-radius: 999px; font-size: .85rem; font-weight: 700; cursor: pointer;
  background: rgba(255,255,255,.08); border: 1px solid var(--line); color: var(--soft); font-family: inherit; }
.preset button:hover { background: rgba(45,245,208,.16); color: #fff; }

.risultato { border: 1px solid rgba(45,245,208,.35); background: rgba(45,245,208,.07); }
.numerone { font-size: clamp(2rem, 6vw, 2.9rem); font-weight: 900; letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--cyan), var(--blue)); -webkit-background-clip: text;
  background-clip: text; color: transparent; line-height: 1.1; }
.riga { display: flex; justify-content: space-between; gap: 14px; padding: 9px 0;
  border-bottom: 1px dashed rgba(255,255,255,.12); font-size: .95rem; }
.riga:last-child { border-bottom: 0; }
.riga b { font-variant-numeric: tabular-nums; }
.neg { color: #fca5a5; }
.pos { color: var(--ok); }
.nota { border-left: 3px solid var(--warn); padding: 10px 14px; margin-top: 16px;
  background: rgba(251,191,36,.08); border-radius: 0 12px 12px 0; font-size: .9rem; color: var(--soft); }

table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: .93rem; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid rgba(255,255,255,.09); }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.cta { margin-top: 28px; padding: 24px; border-radius: var(--radius); text-align: center;
  background: linear-gradient(135deg, rgba(45,245,208,.13), rgba(98,168,255,.13));
  border: 1px solid rgba(45,245,208,.28); }
.cta a { display: inline-block; margin-top: 12px; padding: 13px 24px; border-radius: 999px;
  font-weight: 850; color: #04101a; background: linear-gradient(135deg, var(--cyan), var(--blue)); }

.tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin-top: 22px; }
.tool { display: block; padding: 22px; border-radius: var(--radius); background: var(--panel);
  border: 1px solid var(--line); transition: border-color .15s, transform .15s; }
.tool:hover { border-color: rgba(45,245,208,.45); transform: translateY(-2px); }
.tool .icona { font-size: 1.8rem; }
.tool h3 { margin: 10px 0 6px; font-size: 1.05rem; }
.tool p { color: var(--muted); font-size: .92rem; }
.tool .presto { display: inline-block; margin-top: 10px; font-size: .78rem; font-weight: 800;
  letter-spacing: .06em; text-transform: uppercase; color: var(--warn); }

footer { border-top: 1px solid rgba(255,255,255,.08); padding: 26px 0; color: var(--muted); font-size: .88rem; }
footer .container { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }
.privacy-badge { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; padding: 9px 14px;
  border-radius: 999px; background: rgba(52,211,153,.1); border: 1px solid rgba(52,211,153,.3);
  color: #a7f3d0; font-size: .85rem; font-weight: 600; }