/* qelvina.com — dark Senerum layout, mint on ink. Not senerum red, not ostelix plum. AI analytics courses, Milano. */
:root {
  --ink: #080b10;
  --ink-2: #10151c;
  --ink-3: #171d26;
  --mint: #5ee0c5;
  --mint-2: #9af0dc;
  --teal: #2a6f66;
  --text: #e8eef2;
  --mute: #8b96a3;
  --line: rgba(94, 224, 197, .14);
  --glass: rgba(16, 21, 28, .82);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--mint); }
p { margin: 0 0 .85em; }
h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.08;
  margin: 0 0 .45em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.55rem); }
h2 { font-size: clamp(1.45rem, 3vw, 2.05rem); }
h3 { font-size: 1.12rem; }
[hidden] { display: none !important; }
.wrap { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hi { color: var(--mint); }
.ico {
  width: 18px; height: 18px; stroke: currentColor; fill: none;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto;
}
.ico-lg { width: 26px; height: 26px; }

.top {
  position: sticky; top: 0; z-index: 50;
  background: #07090d;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.top-in { display: flex; align-items: center; gap: 14px; min-height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; margin-right: auto; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.brand b { font-size: .78rem; letter-spacing: .16em; }
.nav { display: flex; gap: 22px; }
.nav a {
  text-decoration: none; color: #c5ced6; font-weight: 600; font-size: .92rem;
}
.nav a.on, .nav a:hover { color: #fff; }
.menu-btn {
  display: none; margin-left: auto; background: transparent; color: #fff;
  border: 1px solid rgba(255,255,255,.12); border-radius: 999px; padding: 8px 12px; font: inherit;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--mint); color: #06221c; text-decoration: none; border: 0;
  border-radius: 999px; padding: 11px 18px; font: inherit; font-weight: 800; cursor: pointer;
}
.btn.full { width: 100%; }
.flag-it {
  width: 34px; height: 34px; border-radius: 50%; overflow: hidden;
  display: grid; grid-template-columns: 1fr 1fr 1fr; border: 1px solid rgba(255,255,255,.12);
}
.flag-it i:nth-child(1) { background: #009246; }
.flag-it i:nth-child(2) { background: #fff; }
.flag-it i:nth-child(3) { background: #ce2b37; }

.hero {
  position: relative;
  min-height: 86vh;
  display: flex; align-items: center;
  background: #0a1014 center/cover no-repeat;
  padding: 56px 0 72px;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(8,11,16,.92) 0%, rgba(8,11,16,.55) 48%, rgba(8,11,16,.35) 100%),
    linear-gradient(180deg, rgba(8,11,16,.2), rgba(8,11,16,.75));
}
.hero-in { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { max-width: 16ch; }
.lead { color: var(--mute); max-width: 46rem; }
.hero .lead { color: #c5ced6; }
.kpis { display: flex; gap: 28px; margin-top: 28px; }
.kpis b { display: block; font-size: 1.7rem; color: var(--mint); letter-spacing: -.04em; }
.kpis span { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mute); }

.card-form {
  background: var(--glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px 22px 18px;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
}
.card-form h2 { font-size: 1.15rem; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(94,224,197,.1); color: var(--mint-2);
  border-radius: 999px; padding: 6px 10px; font-size: .75rem; font-weight: 700;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); }

form label { display: block; font-size: .78rem; font-weight: 700; color: #c5ced6; margin: 0 0 10px; }
input, textarea, select {
  width: 100%; margin-top: 5px; padding: 11px 12px;
  background: #0c1218; border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px; color: #fff; font: inherit;
}
textarea { min-height: 72px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fine { font-size: .75rem; color: var(--mute); margin: 10px 0 0; }
.fine a { color: var(--mint-2); }
.thanks { background: rgba(94,224,197,.12); color: var(--mint-2); border-radius: 12px; padding: 14px; }

.stats {
  background: var(--ink);
  border-top: 1px solid rgba(255,255,255,.05);
  border-bottom: 1px solid rgba(255,255,255,.05);
  padding: 28px 0;
}
.stats .wrap { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; text-align: center; }
.stat b { display: block; color: var(--mint); font-size: 1.35rem; letter-spacing: -.03em; }
.stat span { display: block; font-size: .72rem; color: var(--mute); margin-top: 4px; }

.block { padding: 72px 0; }
.block.alt { background: var(--ink-2); }
.split { display: grid; grid-template-columns: 1.35fr .75fr; gap: 36px; align-items: start; }

.tabs { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 22px 0 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.tabs button {
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--mute); font: inherit; font-weight: 700; padding: 8px 0; cursor: pointer; margin-bottom: -1px;
}
.tabs button.on { color: var(--mint); border-bottom-color: var(--mint); }
.pane {
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 16px; padding: 22px;
}
.pane b { display: block; color: var(--mint); font-size: 1.4rem; margin-bottom: 8px; }

.side { display: grid; gap: 10px; }
.side-card {
  display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start;
  background: var(--ink-3); border: 1px solid rgba(255,255,255,.06);
  border-radius: 16px; padding: 14px 16px;
}
.side-card .ico-wrap {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(94,224,197,.12); color: var(--mint);
  display: flex; align-items: center; justify-content: center;
}
.side-card strong { display: block; font-size: .92rem; }
.side-card p { margin: 4px 0 0; font-size: .8rem; color: var(--mute); }

.calc {
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 20px; padding: 28px;
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; margin-top: 22px;
}
.slide { margin: 0 0 22px; }
.slide em { display: flex; justify-content: space-between; font-style: normal; font-size: .85rem; color: var(--mute); }
input[type=range] { accent-color: var(--mint); height: 4px; padding: 0; background: transparent; border: 0; }
.calc-out { display: flex; flex-direction: column; justify-content: center; text-align: center; }
.calc-out b { font-size: clamp(2.4rem, 6vw, 3.6rem); color: var(--mint); letter-spacing: -.05em; }
.calc-out span { color: var(--mute); }

.insights { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.ins {
  background: var(--ink-3); border: 1px solid rgba(255,255,255,.06); border-radius: 16px; padding: 18px;
}
.ins strong { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.ins p { color: var(--mute); margin: 0; }

.pic { border-radius: 16px; overflow: hidden; background: #132026; }
.pic img { width: 100%; height: 100%; object-fit: cover; }
.shot { aspect-ratio: 16/9; }
.shot-tall { aspect-ratio: 4/3; min-height: 220px; }
.gallery { display: grid; grid-template-columns: 1.4fr 1fr; gap: 14px; margin-top: 24px; }
.gallery-side { display: grid; gap: 14px; }
.cap { font-size: .82rem; color: var(--mute); }

.reviews { display: grid; gap: 12px; margin-top: 20px; }
.rev {
  background: var(--ink-3); border: 1px solid rgba(255,255,255,.06); border-radius: 16px; padding: 16px 18px;
}
.stars { color: var(--mint); letter-spacing: 2px; font-size: .85rem; margin-bottom: 6px; }
.who { display: flex; align-items: center; gap: 10px; margin-top: 10px; color: var(--mute); font-size: .82rem; }
.av {
  width: 34px; height: 34px; border-radius: 50%; background: var(--teal); color: #dffaf3;
  display: flex; align-items: center; justify-content: center; font-size: .72rem; font-weight: 800;
}

.steps { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-top: 24px; }
.step {
  background: var(--ink-3); border: 1px solid rgba(255,255,255,.06); border-radius: 16px; padding: 20px;
}
.step em { color: var(--mint); font-style: normal; font-weight: 800; font-size: .78rem; letter-spacing: .12em; }

.faq details {
  background: var(--ink-3); border: 1px solid rgba(255,255,255,.06); border-radius: 12px;
  padding: 4px 16px; margin: 0 0 8px;
}
.faq summary { cursor: pointer; font-weight: 700; padding: 12px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { color: var(--mute); padding-bottom: 12px; }
.faq .n { color: var(--mint); margin-right: 8px; font-size: .82rem; }

.cta-band {
  background:
    linear-gradient(180deg, rgba(8,11,16,.55), rgba(8,11,16,.88)),
    #0a1014 center/cover no-repeat;
  padding: 72px 0;
}
.cta-band .wrap { display: grid; grid-template-columns: 1fr .85fr; gap: 32px; align-items: center; }

.foot { background: #05070a; color: var(--mute); padding: 40px 0 24px; font-size: .9rem; }
.foot-in { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 24px; }
.foot a { color: #d5dde4; text-decoration: none; display: block; margin: 0 0 6px; }
.foot strong, .foot h4 { color: #fff; }
.foot h4 { margin: 0 0 10px; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }
.copy { border-top: 1px solid rgba(255,255,255,.06); margin-top: 28px; padding-top: 16px; font-size: .78rem; }
.copy a { display: inline; color: var(--mute); }

.legal { padding: 48px 0 72px; }
.legal.wrap { max-width: 760px; }
.legal h1 { font-size: 2rem; }
.legal h2 { font-size: 1.2rem; margin-top: 1.4em; }
.legal p { color: var(--mute); max-width: 42rem; }
.team { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.team article { background: var(--ink-3); border-radius: 16px; overflow: hidden; }
.team img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.team div { padding: 16px; }

.cookie {
  display: none; position: fixed; right: 16px; bottom: 16px; z-index: 80;
  width: min(380px, calc(100% - 32px));
  background: var(--ink-2); color: var(--text); border-radius: 16px; padding: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(0,0,0,.45);
}
.cookie.is-open { display: block; }
.cookie p { font-size: .85rem; }
.cookie-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }
.cookie .ghost {
  background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px; padding: 8px 12px; font: inherit; cursor: pointer;
}
.cookie button[data-cookie-choice="all"] {
  background: var(--mint); color: #06221c; border: 0; border-radius: 10px;
  padding: 8px 12px; font: inherit; font-weight: 800; cursor: pointer;
}

@media (max-width: 960px) {
  .hero-in, .split, .calc, .insights, .gallery, .steps, .foot-in, .cta-band .wrap,
  .stats .wrap, .row2, .team { grid-template-columns: 1fr; }
  .nav { display: none; }
  .nav.is-open {
    display: flex; flex-direction: column; position: absolute; left: 20px; right: 20px; top: 72px;
    background: var(--ink-2); border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 12px 16px;
  }
  .menu-btn { display: inline-flex; }
  .cta-nav { display: none; }
  .kpis { flex-wrap: wrap; }
}