/* See /MASTER_PROMPT.md */
* { box-sizing: border-box; }
:root {
  --ink: #0f172a;
  --muted: #64748b;
  --line: #dbeafe;
  --card: rgba(255,255,255,0.82);
  --mint: #10b981;
  --blue: #2563eb;
  --paper: #f8fafc;
  --shadow: 0 24px 70px rgba(15,23,42,0.14);
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(16,185,129,0.18), transparent 34rem),
    radial-gradient(circle at top right, rgba(37,99,235,0.18), transparent 30rem),
    linear-gradient(180deg, #eef6ff 0%, #ffffff 42%, #f1f5f9 100%);
  line-height: 1.55;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.noscript { margin: 0; padding: 1rem; text-align: center; background: #fef3c7; }
.hero, main { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: 22px 0 8px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}
.brand {
  font-weight: 900;
  letter-spacing: -0.05em;
  text-decoration: none;
  font-size: 1.2rem;
}
.brand span { color: var(--mint); }
.nav-link {
  text-decoration: none;
  border: 1px solid rgba(15,23,42,0.14);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  font-weight: 800;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) 0.85fr;
  gap: 34px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--blue);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  font-weight: 900;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  font-size: clamp(2.35rem, 6.4vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.075em;
  max-width: 680px;
  margin-bottom: 0.85rem;
}
.lead {
  color: #334155;
  max-width: 720px;
  font-size: 1.08rem;
}
.trust-tags, .quality {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.2rem;
}
.trust-tags span, .quality span {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.74);
  border-radius: 999px;
  padding: 0.48rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 800;
}
.qr-poster {
  justify-self: end;
  width: min(100%, 380px);
  border-radius: 38px;
  padding: 22px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), transparent),
    #0f172a;
  color: white;
  box-shadow: 0 34px 90px rgba(15,23,42,0.26);
  transform: rotate(1.2deg);
  border: 1px solid rgba(255,255,255,0.12);
}
.poster-frame {
  position: relative;
  background: white;
  border-radius: 30px;
  aspect-ratio: 1;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(15,23,42,0.08);
}
.qr-hero-art::before {
  content: "";
  position: absolute;
  inset: 26px;
  background-image:
    linear-gradient(#0f172a 0 0), linear-gradient(#0f172a 0 0), linear-gradient(#10b981 0 0),
    linear-gradient(#0f172a 0 0), linear-gradient(#2563eb 0 0), linear-gradient(#0f172a 0 0),
    linear-gradient(#0f172a 0 0), linear-gradient(#10b981 0 0), linear-gradient(#0f172a 0 0),
    linear-gradient(#2563eb 0 0), linear-gradient(#0f172a 0 0), linear-gradient(#0f172a 0 0);
  background-size: 18px 18px, 28px 18px, 18px 36px, 44px 18px, 20px 44px, 18px 18px, 34px 18px, 18px 18px, 18px 44px, 38px 18px, 18px 18px, 30px 30px;
  background-position: 45% 12%, 58% 18%, 75% 12%, 43% 38%, 62% 35%, 82% 36%, 38% 62%, 55% 56%, 72% 62%, 45% 82%, 64% 78%, 82% 80%;
  background-repeat: no-repeat;
}
.finder {
  position: absolute;
  width: 74px;
  height: 74px;
  border: 14px solid #0f172a;
  border-radius: 18px;
  background: white;
  box-shadow: inset 0 0 0 12px white, inset 0 0 0 26px #0f172a;
}
.f1 { left: 28px; top: 28px; }
.f2 { right: 28px; top: 28px; }
.f3 { left: 28px; bottom: 28px; }
.m {
  position: absolute;
  display: block;
  background: #0f172a;
  border-radius: 8px;
}
.m1 { left: 126px; top: 34px; width: 26px; height: 58px; background: var(--mint); }
.m2 { left: 166px; top: 48px; width: 54px; height: 20px; }
.m3 { right: 116px; top: 118px; width: 34px; height: 34px; background: var(--blue); }
.m4 { left: 38px; top: 128px; width: 72px; height: 18px; }
.m5 { left: 126px; top: 128px; width: 20px; height: 72px; }
.m6 { left: 166px; top: 170px; width: 86px; height: 20px; background: linear-gradient(90deg, var(--mint), var(--blue)); }
.m7 { right: 42px; top: 172px; width: 28px; height: 76px; }
.m8 { left: 132px; bottom: 42px; width: 126px; height: 24px; }
.logo-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--mint), var(--blue));
  color: white;
  font-weight: 900;
  font-size: 0.9rem;
  border: 8px solid white;
}
.qr-poster strong { display: block; margin-top: 18px; font-size: 2rem; letter-spacing: -0.04em; }
.qr-poster p { color: #cbd5e1; margin-bottom: 0; }
.app-shell { padding: 14px 0 54px; }
.builder {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 0.8fr;
  gap: 22px;
  align-items: start;
}
.panel, .seo-block {
  background: var(--card);
  border: 1px solid rgba(148,163,184,0.32);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.panel { padding: 24px; }
.panel-head h2 { font-size: clamp(1.35rem, 3vw, 2.1rem); letter-spacing: -0.045em; margin-bottom: 1rem; }
.type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 18px;
}
.type-tabs button {
  border: 1px solid var(--line);
  background: white;
  padding: 0.62rem 0.8rem;
  border-radius: 14px;
  font-weight: 850;
}
.type-tabs button.active {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}
.fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.field-wide { grid-column: 1 / -1; }
label { display: grid; gap: 0.35rem; color: #334155; font-size: 0.86rem; font-weight: 800; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 16px;
  background: rgba(255,255,255,0.92);
  padding: 0.82rem 0.9rem;
  color: var(--ink);
}
textarea { min-height: 128px; resize: vertical; }
.design-box {
  margin-top: 18px;
  border: 1px solid var(--line);
  background: rgba(239,246,255,0.72);
  border-radius: 22px;
  padding: 16px;
}
.design-box summary { cursor: pointer; font-weight: 900; }
.design-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.logo-upload, .range-row { margin-top: 14px; }
.logo-upload span { color: var(--muted); font-weight: 600; }
.range-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
}
.preview-panel {
  position: sticky;
  top: 18px;
}
.qr-wrap {
  background:
    linear-gradient(45deg, rgba(15,23,42,0.05) 25%, transparent 25% 75%, rgba(15,23,42,0.05) 75%),
    linear-gradient(45deg, rgba(15,23,42,0.05) 25%, transparent 25% 75%, rgba(15,23,42,0.05) 75%);
  background-size: 28px 28px;
  background-position: 0 0, 14px 14px;
  border-radius: 24px;
  padding: 16px;
  border: 1px solid var(--line);
}
canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  background: white;
}
.status {
  margin: 14px 0;
  color: var(--muted);
  font-weight: 750;
}
.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.actions button {
  border: 0;
  border-radius: 16px;
  padding: 0.86rem 0.9rem;
  font-weight: 900;
  background: #e0f2fe;
  color: #075985;
}
.actions .primary {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--mint), var(--blue));
  color: white;
}
.seo-block {
  padding: clamp(22px, 5vw, 40px);
  margin: 24px 0;
}
.seo-block h2 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  letter-spacing: -0.06em;
  margin-bottom: 1rem;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.feature-grid article, .tool-card {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
}
.feature-grid h3, .tool-card strong { letter-spacing: -0.03em; }
.feature-grid p, .tool-card p, .split p, .faq p { color: var(--muted); }
.split {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 18px;
}
.tool-card {
  text-decoration: none;
  transition: transform 0.18s, border-color 0.18s;
}
.tool-card:hover { transform: translateY(-3px); border-color: var(--mint); }
.tool-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
  border-radius: 14px;
  background: #0f172a;
  color: white;
  font-size: 0.7rem;
  font-weight: 900;
}
.faq details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 900;
  font-size: 1.02rem;
}
.faq p { margin: 0.7rem 0 0; max-width: 760px; }
.app-footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.9rem;
}
.app-footer a { color: var(--blue); font-weight: 800; }
@media (max-width: 900px) {
  .hero-grid, .builder, .split { grid-template-columns: 1fr; }
  .qr-poster { justify-self: stretch; transform: none; }
  .preview-panel { position: static; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .topbar { margin-bottom: 26px; }
  .qr-poster { width: min(100%, 320px); margin: 0 auto; }
  .finder { width: 58px; height: 58px; border-width: 11px; border-radius: 14px; }
  .f1 { left: 22px; top: 22px; }
  .f2 { right: 22px; top: 22px; }
  .f3 { left: 22px; bottom: 22px; }
  .m1 { left: 100px; top: 28px; }
  .m2 { left: 138px; top: 42px; width: 42px; }
  .m3 { right: 90px; top: 96px; }
  .m4 { left: 30px; top: 104px; width: 58px; }
  .m5 { left: 100px; top: 104px; }
  .m6 { left: 136px; top: 140px; width: 68px; }
  .m7 { right: 32px; top: 138px; height: 58px; }
  .m8 { left: 106px; bottom: 34px; width: 100px; }
  .fields, .design-grid, .feature-grid { grid-template-columns: 1fr; }
  .panel { padding: 18px; border-radius: 22px; }
  .range-row { grid-template-columns: 1fr; }
  .actions { grid-template-columns: 1fr; }
}