/* ------------------------------
   Base
------------------------------ */
:root{
  --bg: #070A12;
  --panel: rgba(255,255,255,0.06);
  --panel-2: rgba(255,255,255,0.08);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.68);
  --faint: rgba(255,255,255,0.52);
  --line: rgba(255,255,255,0.12);

  --primary: #7C5CFF;
  --primary-2: #34D399;

  --shadow: 0 12px 40px rgba(0,0,0,0.40);
  --radius: 18px;
  --radius-lg: 26px;

  --container: 1160px;
}

*{ box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% 0%, rgba(124,92,255,0.25), transparent 55%),
              radial-gradient(900px 700px at 90% 10%, rgba(52,211,153,0.18), transparent 50%),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
p{ margin: 0 0 1rem; color: var(--muted); }
h1,h2,h3{ margin: 0 0 0.75rem; letter-spacing: -0.02em; }
h1{ font-size: clamp(2.1rem, 4vw, 3.4rem); line-height: 1.06; }
h2{ font-size: clamp(1.6rem, 2.7vw, 2.3rem); line-height: 1.15; }
h3{ font-size: 1.15rem; }

code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
  color: rgba(255,255,255,0.9);
}

.container{
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
}

.section{
  padding: clamp(3.2rem, 6vw, 5rem) 0;
}

.section-alt{
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.04), transparent);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section-head{
  max-width: 780px;
  margin-bottom: 2rem;
}
.section-head p{ font-size: 1.05rem; }

/* ------------------------------
   Skip link
------------------------------ */
.skip-link{
  position: absolute;
  left: -999px; top: 0;
  padding: 0.75rem 1rem;
  background: #111;
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus{ left: 1rem; top: 1rem; }

/* ------------------------------
   Header & Nav
------------------------------ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(7,10,18,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand{
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.brand-mark{ font-weight: 800; font-size: 1.05rem; letter-spacing: -0.03em; }
.brand-dot{ opacity: 0.85; }
.brand-sub{
  font-size: 0.82rem;
  color: var(--faint);
}

.nav-list{
  display: flex;
  align-items: center;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a{
  padding: 0.6rem 0.7rem;
  border-radius: 12px;
  color: rgba(255,255,255,0.80);
}
.nav-list a:hover{
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.92);
}

.nav-toggle{
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  cursor: pointer;
}
.nav-toggle span{
  display: block;
  height: 2px;
  margin: 6px 10px;
  background: rgba(255,255,255,0.78);
  border-radius: 2px;
}

/* ------------------------------
   Buttons
------------------------------ */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 650;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
  user-select: none;
}
.btn:active{ transform: translateY(1px); }

.btn-primary{
  background: linear-gradient(135deg, rgba(124,92,255,0.95), rgba(52,211,153,0.85));
  border-color: rgba(255,255,255,0.12);
  box-shadow: var(--shadow);
}
.btn-primary:hover{
  border-color: rgba(255,255,255,0.22);
}

.btn-ghost{
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.14);
}
.btn-ghost:hover{
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.20);
}

.text-link{
  color: rgba(255,255,255,0.86);
}
.text-link:hover{
  text-decoration: underline;
}

.icon-btn{
  padding: 0.45rem 0.65rem;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.86);
  cursor: pointer;
}
.icon-btn:hover{
  background: rgba(255,255,255,0.08);
}

/* ------------------------------
   Hero
------------------------------ */
.hero{
  padding: clamp(2.5rem, 5.5vw, 4.6rem) 0 2.2rem;
  position: relative;
}

.hero-grid{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.4rem, 3vw, 2.6rem);
  align-items: center;
}

.badge{
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.82);
  margin-bottom: 1.1rem;
}
.badge-dot{
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(52,211,153,0.95);
  box-shadow: 0 0 0 6px rgba(52,211,153,0.12);
}

.lead{ font-size: 1.12rem; color: rgba(255,255,255,0.78); max-width: 54ch; }

.hero-actions{
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.3rem;
}

.hero-metrics{
  margin-top: 1.7rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 0.9rem;
}

.metric{
  padding: 1rem 1.05rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
}
.metric-top{ font-size: 0.85rem; color: var(--faint); }
.metric-value{ font-weight: 800; font-size: 1.1rem; margin-top: 0.35rem; }
.metric-sub{ font-size: 0.9rem; color: var(--muted); margin-top: 0.2rem; }

.hero-card .card{
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-head{
  padding: 1.1rem 1.2rem 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.card-title{ font-weight: 800; }
.card-sub{ color: var(--muted); font-size: 0.92rem; }

.qr-preview{
  padding: 1.2rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.2rem;
  align-items: center;
}

.qr-canvas{
  width: 220px;
  height: 220px;
  border-radius: 22px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.10);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.qr-meta .qr-label{ color: var(--faint); font-size: 0.9rem; }
.qr-row{ display: flex; gap: 0.6rem; align-items: center; margin: 0.4rem 0 0.65rem; flex-wrap: wrap; }
.qr-hint{ color: var(--muted); font-size: 0.95rem; }

.card-foot{
  padding: 0.95rem 1.2rem 1.1rem;
  border-top: 1px solid rgba(255,255,255,0.10);
}

.hero-bg{
  position: absolute;
  inset: auto 0 -1px 0;
  height: 1px;
  background: rgba(255,255,255,0.06);
}

/* ------------------------------
   Trust
------------------------------ */
.trust{
  padding: 1.2rem 0;
}
.trust-text{
  margin: 0;
  color: rgba(255,255,255,0.70);
  text-align: center;
}

/* ------------------------------
   Features & Grids
------------------------------ */
.grid-3{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1rem;
}

.feature{
  padding: 1.3rem 1.25rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
}
.feature p{ margin: 0; color: var(--muted); }

.quality-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 1rem;
}

.quality-card{
  padding: 1.2rem 1.2rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
}

.quality-card.highlight{
  background: linear-gradient(180deg, rgba(124,92,255,0.16), rgba(52,211,153,0.08));
  border-color: rgba(255,255,255,0.18);
}

.quality-top{
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.quality-tag{
  width: 42px; height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}

.callout{
  margin-top: 1.6rem;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 18px 60px rgba(0,0,0,0.28);
}
.callout-inner{
  padding: 1.4rem 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.callout-inner p{ margin: 0; }

/* ------------------------------
   Generator
------------------------------ */
.generator{
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 1rem;
  align-items: start;
}

.gen-form{
  padding: 1.3rem 1.25rem;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
}

.field{ display: grid; gap: 0.45rem; margin-bottom: 1rem; }
.field-label{ font-size: 0.95rem; color: rgba(255,255,255,0.86); font-weight: 650; }
.field-hint{ font-size: 0.9rem; color: var(--muted); }

.input, .select{
  width: 100%;
  padding: 0.85rem 0.95rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(10,12,20,0.65);
  color: rgba(255,255,255,0.92);
  outline: none;
}
.input:focus, .select:focus{
  border-color: rgba(124,92,255,0.55);
  box-shadow: 0 0 0 4px rgba(124,92,255,0.16);
}

.row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.gen-actions{
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}
.micro{ margin-top: 1rem; font-size: 0.92rem; color: var(--muted); }

.gen-preview .preview-card{
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.preview-head{
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.preview-title{ font-weight: 850; }
.preview-sub{ color: var(--muted); font-size: 0.92rem; }

.pill{
  font-size: 0.85rem;
  color: rgba(255,255,255,0.86);
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
}

.preview-body{
  padding: 1.2rem;
  display: grid;
  gap: 1rem;
}
#qrcode.qr-canvas{
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  max-width: 420px;
  margin-inline: auto;
}
.preview-meta{
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 1rem;
  display: grid;
  gap: 0.6rem;
}
.meta-row{
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}
.meta-label{ color: var(--faint); font-size: 0.9rem; }
.meta-dot{ color: rgba(255,255,255,0.35); }

.preview-foot{
  padding: 0.95rem 1.2rem 1.1rem;
  border-top: 1px solid rgba(255,255,255,0.10);
}

/* ------------------------------
   CTA
------------------------------ */
.cta{
  padding: clamp(3.2rem, 6vw, 5rem) 0;
}
.cta-inner{
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.2rem;
  align-items: center;
}
.cta-inner p{ font-size: 1.05rem; }

.cta-card{
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(124,92,255,0.16), rgba(255,255,255,0.06));
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: var(--shadow);
  padding: 1.4rem 1.4rem;
}
.cta-title{ font-weight: 900; font-size: 1.1rem; margin-bottom: 0.3rem; }
.cta-sub{ margin: 0 0 1.1rem; color: var(--muted); }
.cta-actions{ display: flex; gap: 0.8rem; flex-wrap: wrap; }

.cta-mini{
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.72);
  font-size: 0.92rem;
}
.cta-mini .dot{
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(124,92,255,0.9);
  box-shadow: 0 0 0 6px rgba(124,92,255,0.12);
}

/* ------------------------------
   FAQ
------------------------------ */
.faq{
  max-width: 860px;
  display: grid;
  gap: 0.8rem;
}

details{
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  padding: 1rem 1.05rem;
}
summary{
  cursor: pointer;
  font-weight: 750;
  color: rgba(255,255,255,0.88);
}
details p{ margin: 0.8rem 0 0; }

/* ------------------------------
   Footer
------------------------------ */
.site-footer{
  padding: 2.2rem 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.15);
}
.footer-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-brand{ font-weight: 900; }
.footer-sub{ color: var(--muted); font-size: 0.92rem; margin-top: 0.25rem; }
.footer-links{ display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a{ color: rgba(255,255,255,0.78); }
.footer-links a:hover{ text-decoration: underline; }

/* ------------------------------
   Toast
------------------------------ */
.toast{
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  padding: 0.75rem 0.95rem;
  border-radius: 14px;
  background: rgba(10,12,20,0.92);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 14px 40px rgba(0,0,0,0.45);
  color: rgba(255,255,255,0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}
.toast.show{
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

/* ------------------------------
   Responsive
------------------------------ */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .qr-preview{ grid-template-columns: 1fr; }
  .qr-canvas{ width: 100%; height: auto; aspect-ratio: 1 / 1; max-width: 320px; margin-inline: auto; }
  .hero-metrics{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
  .quality-grid{ grid-template-columns: 1fr; }
  .generator{ grid-template-columns: 1fr; }
  .cta-inner{ grid-template-columns: 1fr; }
}

@media (max-width: 860px){
  .nav-toggle{ display: inline-block; }
  .nav-list{
    position: absolute;
    right: 1rem;
    top: 68px;
    width: min(360px, calc(100% - 2rem));
    padding: 0.8rem;
    border-radius: 18px;
    background: rgba(10,12,20,0.95);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    align-items: stretch;
  }
  .nav-list.open{ display: flex; }
  .nav-list a{ padding: 0.8rem 0.9rem; }
}