/* ==========================================================================
   QRgenie — design system
   Palette: Jet Black #292F36 · Strong Cyan #4ECDC4 · Mint Cream #F7FFF7
   Type: Figtree (display/body) · JetBrains Mono (data/utility)
   ========================================================================== */

:root{
  --ink:        #292F36;
  --ink-deep:   #1B1F25;
  --signal:     #4ECDC4;
  --signal-deep:#33A89E;
  --signal-ink: #0E3F3B;
  --mist:       #F7FFF7;
  --paper:      #FFFFFF;
  --muted:      #6B7480;
  --muted-2:    #939BA5;
  --line:       rgba(41,47,54,.10);
  --line-strong:rgba(41,47,54,.18);
  --glow:       rgba(78,205,196,.38);
  --glow-soft:  rgba(78,205,196,.16);
  --tint:       #ECFBF9;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 26px;
  --radius-pill: 999px;

  --shadow-card: 0 1px 2px rgba(41,47,54,.05), 0 16px 36px -20px rgba(41,47,54,.22);
  --shadow-elevated: 0 10px 28px -10px rgba(41,47,54,.24), 0 2px 6px rgba(41,47,54,.06);
  --shadow-glow: 0 0 0 1px rgba(78,205,196,.25), 0 18px 48px -16px rgba(78,205,196,.55);

  --font-display: 'Figtree', system-ui, -apple-system, sans-serif;
  --font-body:    'Figtree', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1200px;
  --ease: cubic-bezier(.22,1,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--mist);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
input,select,textarea{ font:inherit; color:inherit; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4,p,figure{ margin:0; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

:focus-visible{ outline:2px solid var(--signal-deep); outline-offset:3px; border-radius:6px; }
.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 24px; }

/* Keep anchor targets clear of the persistent shared topbar. */
main [id]{ scroll-margin-top:92px; }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono);
  font-size:12px; font-weight:500;
  letter-spacing:.14em; text-transform:uppercase;
  color:var(--signal-deep);
}
.eyebrow::before{
  content:''; width:6px; height:6px; border-radius:50%;
  background:var(--signal); box-shadow:0 0 0 4px var(--glow-soft);
}
h1,h2,h3{ font-family:var(--font-display); letter-spacing:-.02em; color:var(--ink); }

/* ---------- shared top nav (injected by site.js) ---------- */
.nav{
  position:sticky; top:0; z-index:100; width:100%; isolation:isolate;
  background:rgba(247,255,247,.88);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav__inner{ display:flex; align-items:center; justify-content:space-between; height:72px; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:800; font-size:19px; letter-spacing:-.01em; }
.brand__mark{ width:30px; height:30px; flex:none; }
.brand__word{ color:var(--ink); }
.brand__word b{ color:var(--signal-deep); font-weight:800; }
.btn-hub{
  display:inline-flex; align-items:center; gap:7px;
  padding:10px 18px;
  border:1.5px solid var(--ink);
  border-radius:var(--radius-pill);
  font-weight:600; font-size:14px;
  transition:background .18s var(--ease), color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
}
.btn-hub:hover{ background:var(--ink); color:var(--mist); transform:translateY(-1px); box-shadow:var(--shadow-elevated); }
.btn-hub svg{ width:14px; height:14px; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 22px;
  border-radius:var(--radius-pill);
  font-weight:700; font-size:14.5px;
  cursor:pointer; border:1.5px solid transparent;
  transition:transform .16s var(--ease), box-shadow .2s var(--ease), background .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease);
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--ink); color:var(--mist); box-shadow:var(--shadow-elevated); }
.btn-primary:hover{ background:var(--ink-deep); box-shadow:0 14px 32px -12px rgba(41,47,54,.4); transform:translateY(-1px); }
.btn-signal{ background:var(--signal); color:var(--signal-ink); box-shadow:var(--shadow-glow); }
.btn-signal:hover{ background:var(--signal-deep); color:#fff; transform:translateY(-1px); }
.btn-ghost{ background:var(--paper); border-color:var(--line-strong); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-text{ padding:6px 2px; font-weight:600; font-size:13.5px; color:var(--muted); border-bottom:1px solid transparent; border-radius:0; }
.btn-text:hover{ color:var(--ink); border-color:var(--ink); }
.btn[disabled]{ opacity:.45; cursor:not-allowed; transform:none !important; }
.btn svg{ width:16px; height:16px; flex:none; }

/* ---------- hero ---------- */
.hero{ padding:64px 0 40px; }
.hero__head{ max-width:760px; }
.hero h1{ font-size:clamp(2.3rem, 4.6vw, 3.7rem); font-weight:800; line-height:1.06; margin:16px 0 18px; }
.hero__lede{ font-size:18px; color:var(--muted); max-width:560px; margin-bottom:0; }
.hero{ padding-bottom:0; }
.hero__kicker{ margin-bottom:20px; }
.badge-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
.badge{
  display:inline-flex; align-items:center; gap:7px;
  font-family:var(--font-mono); font-size:11.5px; font-weight:500; letter-spacing:.04em;
  color:var(--muted); border:1px solid var(--line-strong); border-radius:var(--radius-pill);
  padding:6px 14px;
}
.badge svg{ width:13px; height:13px; color:var(--signal-deep); flex:none; }

/* ---------- tool ---------- */
.tool{ padding:36px 0 90px; }
.tool{ padding-top:32px; }
.tool__grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:26px; align-items:stretch; }
@media (max-width:960px){ .tool__grid{ grid-template-columns:1fr; } }
.panel{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:30px;
}
.panel__title{ font-size:13px; font-weight:700; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); margin-bottom:18px; }
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:13.5px; font-weight:700; margin-bottom:8px; color:var(--ink); }
.field-hint{ font-size:12.5px; color:var(--muted-2); margin-top:6px; }
.input-row{ position:relative; }
.text-input{
  width:100%; padding:15px 100px 15px 16px;
  border:1.5px solid var(--line-strong); border-radius:var(--radius-md);
  background:var(--mist); font-size:15px; font-family:var(--font-mono);
  transition:border-color .16s, box-shadow .16s, background .16s;
}
.text-input:focus{ outline:none; border-color:var(--signal-deep); background:var(--paper); box-shadow:0 0 0 4px var(--glow-soft); }
.paste-btn{ position:absolute; right:6px; top:50%; transform:translateY(-50%); padding:8px 14px; border-radius:var(--radius-pill); background:var(--ink); color:var(--mist); font-size:12.5px; font-weight:700; }
.paste-btn:hover{ background:var(--ink-deep); }
.char-count{ display:flex; justify-content:space-between; font-family:var(--font-mono); font-size:11.5px; color:var(--muted-2); margin-top:8px; }
.char-count.is-near-limit{ color:#B8560B; }
.char-count.is-over-limit{ color:#C4392B; }
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.select{
  width:100%; padding:12px 14px; border:1.5px solid var(--line-strong);
  border-radius:var(--radius-sm); background:var(--paper);
  font-size:14px; font-weight:600; appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7480' stroke-width='1.6' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 14px center;
}
.select:focus{ outline:none; border-color:var(--signal-deep); box-shadow:0 0 0 4px var(--glow-soft); }
.color-field{ display:flex; align-items:center; gap:10px; border:1.5px solid var(--line-strong); border-radius:var(--radius-sm); padding:8px 10px; background:var(--paper); }
.color-field:focus-within{ border-color:var(--signal-deep); box-shadow:0 0 0 4px var(--glow-soft); }
.color-swatch{ width:28px; height:28px; border-radius:8px; border:1px solid var(--line-strong); padding:0; overflow:hidden; flex:none; }
.color-swatch::-webkit-color-swatch-wrapper{ padding:0; }
.color-swatch::-webkit-color-swatch{ border:0; border-radius:7px; }
.color-hex{ border:0; background:none; width:100%; font-family:var(--font-mono); font-size:13px; text-transform:uppercase; }
.color-hex:focus{ outline:none; }
.toggle-group{ display:flex; border:1.5px solid var(--line-strong); border-radius:var(--radius-sm); overflow:hidden; }
.toggle-group button{ flex:1; padding:11px 10px; font-size:13.5px; font-weight:700; color:var(--muted); border-right:1px solid var(--line-strong); transition:background .15s, color .15s; }
.toggle-group button:last-child{ border-right:0; }
.toggle-group button.is-active{ background:var(--ink); color:var(--mist); }
.checkbox-row{ display:flex; align-items:center; gap:9px; font-size:13.5px; font-weight:600; color:var(--ink); }
.checkbox-row input{ width:17px; height:17px; accent-color:var(--signal-deep); }
.actions{ display:flex; flex-wrap:wrap; gap:10px; margin-top:26px; }
.reset-row{ margin-top:16px; text-align:right; }

/* ---------- preview panel ---------- */
.preview-panel{ display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; gap:20px; position:relative; }
.preview-frame{ position:relative; width:min(300px, 100%); aspect-ratio:1/1; display:flex; align-items:center; justify-content:center; background:var(--mist); border-radius:var(--radius-md); }
.preview-frame::before{ content:''; position:absolute; inset:-14px; background:radial-gradient(circle, var(--glow) 0%, transparent 68%); opacity:.55; filter:blur(2px); animation:pulse-glow 3.2s ease-in-out infinite; pointer-events:none; }
@keyframes pulse-glow{ 0%,100%{ opacity:.35; transform:scale(.96); } 50%{ opacity:.65; transform:scale(1.02); } }
.corner{ position:absolute; width:26px; height:26px; border:2.5px solid var(--ink); opacity:.85; }
.corner--tl{ top:-6px; left:-6px; border-right:0; border-bottom:0; border-top-left-radius:8px; }
.corner--tr{ top:-6px; right:-6px; border-left:0; border-bottom:0; border-top-right-radius:8px; }
.corner--bl{ bottom:-6px; left:-6px; border-right:0; border-top:0; border-bottom-left-radius:8px; }
.corner--br{ bottom:-6px; right:-6px; border-left:0; border-top:0; border-bottom-right-radius:8px; }
#qr-canvas{ position:relative; z-index:1; border-radius:8px; max-width:88%; max-height:88%; }
.preview-empty{ font-size:13.5px; color:var(--muted-2); max-width:200px; }
.preview-meta{ font-family:var(--font-mono); font-size:12px; color:var(--muted); letter-spacing:.02em; }
.preview-meta b{ color:var(--ink); }
.preview-actions{ display:flex; flex-wrap:wrap; justify-content:center; gap:10px; width:100%; }
.copy-feedback{ font-size:12.5px; font-weight:700; color:var(--signal-deep); height:16px; }

/* ---------- content sections ---------- */
.section{ padding:78px 0; border-top:1px solid var(--line); }
.section--tint{ background:var(--tint); }
.section__head{ width:100%; max-width:var(--container); margin-bottom:44px; }
.section__head h2{ font-size:clamp(1.7rem,3vw,2.4rem); font-weight:800; margin-top:12px; }
.section__lede{ color:var(--muted); font-size:16px; margin-top:14px; max-width:760px; }
.reason-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:18px; }
@media (max-width:760px){ .reason-grid{ grid-template-columns:1fr; } }
.reason-card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md); padding:26px; box-shadow:var(--shadow-card); }
.reason-card__icon{ width:42px; height:42px; border-radius:11px; background:var(--tint); display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.reason-card__icon svg{ width:20px; height:20px; color:var(--signal-deep); }
.reason-card h3{ font-size:17px; font-weight:700; margin-bottom:8px; }
.reason-card p{ color:var(--muted); font-size:14.5px; }
.usecase-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:900px){ .usecase-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .usecase-grid{ grid-template-columns:1fr; } }
.usecase-card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md); padding:24px; }
.usecase-card__num{ font-family:var(--font-mono); font-size:13px; font-weight:700; color:var(--signal-deep); display:block; margin-bottom:12px; }
.usecase-card h3{ font-size:16px; font-weight:700; margin-bottom:8px; }
.usecase-card p{ color:var(--muted); font-size:14px; }

/* ---------- QRgenie how-it-works ---------- */
.step-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media(max-width:760px){ .step-grid{ grid-template-columns:1fr; } }
.step-card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-md); padding:26px; position:relative; overflow:hidden; color:var(--ink-deep); box-shadow:var(--shadow-card); }
.step-card::after{ content:''; position:absolute; inset:0; background:linear-gradient(135deg,var(--tint) 0%,transparent 55%); pointer-events:none; }
.step-num{ font-family:var(--font-mono); font-size:13px; font-weight:700; color:var(--signal-deep); margin-bottom:14px; display:block; }
.step-card h3{ font-size:16px; font-weight:700; margin-bottom:8px; position:relative; z-index:1; }
.step-card p{ font-size:14px; color:var(--muted); margin:0; position:relative; z-index:1; }
.step-num{ position:relative; z-index:1; }
.section--first{ border-top:none; }

/* ---------- FAQ ---------- */
.faq-list{ width:100%; max-width:none; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item summary{ cursor:pointer; list-style:none; padding:20px 0; display:flex; align-items:center; justify-content:space-between; gap:16px; font-weight:700; font-size:16px; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary .plus{ flex:none; width:22px; height:22px; border-radius:50%; border:1.5px solid var(--line-strong); position:relative; transition:transform .2s var(--ease), background .2s, border-color .2s; }
.faq-item summary .plus::before,.faq-item summary .plus::after{ content:''; position:absolute; background:var(--ink); transition:opacity .2s; }
.faq-item summary .plus::before{ top:50%; left:5px; right:5px; height:1.5px; transform:translateY(-50%); }
.faq-item summary .plus::after{ left:50%; top:5px; bottom:5px; width:1.5px; transform:translateX(-50%); }
.faq-item[open] summary .plus{ background:var(--ink); border-color:var(--ink); }
.faq-item[open] summary .plus::before,.faq-item[open] summary .plus::after{ background:var(--mist); }
.faq-item[open] summary .plus::after{ opacity:0; }
.faq-item p{ color:var(--muted); font-size:14.5px; padding:0 0 22px; max-width:900px; }

/* ---------- shared footer (injected by site.js) ---------- */
.footer{ border-top:1px solid var(--line); background:var(--ink); color:var(--mist); }
.footer__top{ padding:64px 0 40px; display:grid; grid-template-columns:1.35fr 1fr 1fr 1fr; gap:30px; }
@media (max-width:860px){ .footer__top{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer__top{ grid-template-columns:1fr; gap:30px; padding-top:44px; } }
.footer__brand{ display:flex; align-items:center; gap:10px; font-weight:800; font-size:18px; margin-bottom:14px; }
.footer__brand svg{ width:26px; height:26px; flex:none; }
.footer__tag{ color:rgba(247,255,247,.72); font-size:14px; max-width:280px; margin-bottom:16px; }
.footer__badge{ display:inline-flex; align-items:center; gap:7px; font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--signal); border:1px solid rgba(78,205,196,.35); border-radius:var(--radius-pill); padding:6px 12px; }
.footer__col h4{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase; color:rgba(247,255,247,.64); margin-bottom:16px; }
.footer__col ul li{ margin-bottom:11px; }
.footer__col a{ color:rgba(247,255,247,.86); font-size:14px; transition:color .15s; }
.footer__col a:hover{ color:var(--signal); }
.footer__bottom{ border-top:1px solid rgba(247,255,247,.12); padding:22px 0; display:flex; align-items:center; justify-content:space-between; gap:16px; font-size:13px; color:rgba(247,255,247,.68); flex-wrap:wrap; }
.footer__bottom a{ color:rgba(247,255,247,.84); }
.footer__bottom a:hover{ color:var(--signal); }
.footer__bottom .footer__bottom-links{ display:flex; flex-wrap:wrap; gap:12px; align-items:center; }
.footer__bottom .footer__sep{ color:rgba(247,255,247,.38); }

/* ---------- utility ---------- */
.visually-hidden{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
.skip-link{ position:absolute; left:16px; top:-60px; background:var(--ink); color:var(--mist); padding:10px 16px; border-radius:8px; z-index:100; transition:top .2s; }
.skip-link:focus{ top:16px; }

/* ---------- responsive refinements ---------- */
@media (max-width:600px){
  .container{ padding-left:18px; padding-right:18px; }
  .nav__inner{ height:66px; }
  .brand{ font-size:18px; }
  .btn-hub{ padding:9px 13px; font-size:13px; }
  .hero{ padding-top:46px; }
  .hero h1{ font-size:clamp(2.15rem, 10vw, 3rem); }
  .hero__lede{ font-size:16px; }
  .panel{ padding:22px; border-radius:22px; }
  .grid-2{ gap:12px; }
  .actions .btn{ flex:1 1 auto; }
  .section{ padding:58px 0; }
  .section__head{ margin-bottom:30px; }
}