/* ==========================================================================
   OpenQR Studio – styles
   Re-theme the whole site by editing the tokens in :root below.
   ========================================================================== */
:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --ink: #0f1115;
  --muted: #5f6673;
  --line: #e5e7eb;

  --brand: #4f46e5;
  --brand-hover: #4338ca;
  --brand-ink: #ffffff;
  --brand-soft: #eef0ff;
  --focus: rgba(79, 70, 229, 0.45);

  --hero-a: #fde8ef;
  --hero-b: #e4e6ff;
  --hero-base: #f4f1fb;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 10px 28px rgba(16, 24, 40, 0.08);
  --max: 1120px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Icon tones used by the type cards */
[data-tone="violet"] { --tone: #6d3ee0; --tone-bg: #f1ebff; }
[data-tone="green"]  { --tone: #047857; --tone-bg: #e3f5ec; }
[data-tone="rose"]   { --tone: #be123c; --tone-bg: #ffe8ee; }
[data-tone="amber"]  { --tone: #a4470a; --tone-bg: #fdefdb; }
[data-tone="blue"]   { --tone: #1d4ed8; --tone-bg: #e6eeff; }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p { margin: 0; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }

.ico { display: inline-flex; align-items: center; justify-content: center; line-height: 0; }
svg.icon { width: 1.25em; height: 1.25em; flex: none; }
.container { width: min(100% - 40px, var(--max)); margin-inline: auto; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 50;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 999px;
  padding: 10px 18px; font-weight: 600; font-size: 0.95rem; line-height: 1.2;
  text-decoration: none; cursor: pointer;
  transition: background-color .15s, border-color .15s, box-shadow .15s, transform .15s;
}
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { background: var(--brand-hover); }
.btn-lg { padding: 15px 28px; font-size: 1rem; }
.btn-ghost { background: var(--surface); border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: #c9ced6; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.125rem; letter-spacing: -0.01em; text-decoration: none; }
.brand .ico { color: var(--brand); }
.brand svg.icon { width: 26px; height: 26px; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav .link { padding: 8px 14px; border-radius: 999px; text-decoration: none; color: var(--muted); font-weight: 500; }
.nav .link:hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 56px; }
.hero .container { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px 6px 10px; font-size: 0.8125rem; font-weight: 500;
}
.pill .ico { color: var(--brand); }
.pill svg.icon { width: 16px; height: 16px; }
.hero h1 { font-size: clamp(2.5rem, 5.4vw, 3.9rem); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; margin: 22px 0 18px; }
.lead { font-size: 1.1875rem; color: var(--muted); max-width: 36ch; }
.hero-cta { margin-top: 30px; }
.hero-points { margin: 26px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--muted); font-size: 0.9rem; }
.hero-points li { display: inline-flex; align-items: center; gap: 6px; }
.hero-points .ico { color: var(--brand); }
.hero-points svg.icon { width: 18px; height: 18px; }

.hero-art {
  border-radius: var(--radius-lg);
  padding: 48px 24px; min-height: 400px;
  display: grid; place-items: center;
  background:
    radial-gradient(120% 90% at 0% 0%, var(--hero-a) 0%, transparent 58%),
    radial-gradient(100% 100% at 100% 100%, var(--hero-b) 0%, transparent 62%),
    var(--hero-base);
}
.qr-card {
  width: min(300px, 82%); background: #fff; border-radius: 24px; padding: 14px;
  box-shadow: 0 24px 56px rgba(30, 27, 75, 0.2), 0 2px 6px rgba(30, 27, 75, 0.08);
}
.qr-card .qr { border-radius: 12px; overflow: hidden; }
.qr-card .qr svg { display: block; width: 100%; height: auto; }
.qr-card .cap { margin-top: 12px; background: var(--ink); color: #fff; text-align: center; border-radius: 12px; padding: 10px; font-weight: 600; }

/* ---------- Features ---------- */
.features { padding: 24px 0 72px; }
.features .grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.feature-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--brand-soft); color: var(--brand); margin-bottom: 14px; }
.feature h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.feature p { font-size: 0.9rem; color: var(--muted); }

/* ---------- Wizard ---------- */
.wizard { scroll-margin-top: 64px; padding-bottom: 88px; }
.stepper-bar { background: var(--surface); border-block: 1px solid var(--line); }
.stepper { list-style: none; margin: 0; padding: 18px 0; display: flex; align-items: center; gap: 14px; }
.stepper li { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 0.9375rem; white-space: nowrap; }
.stepper li:not(:last-child) { flex: 1; }
.stepper li:not(:last-child)::after { content: ""; flex: 1; height: 1px; background: var(--line); margin-left: 4px; }
.stepper .dot {
  display: grid; place-items: center; width: 28px; height: 28px; flex: none;
  border-radius: 50%; border: 1px solid #c9ced6; background: var(--surface);
  font-size: 0.8125rem; font-weight: 600;
}
.stepper .tick { display: none; }
.stepper .tick svg.icon { width: 15px; height: 15px; }
.stepper li.is-active { color: var(--ink); font-weight: 600; }
.stepper li.is-active .dot { background: var(--ink); border-color: var(--ink); color: #fff; }
.stepper li.is-done .dot { background: #eceef2; border-color: #eceef2; color: var(--ink); }
.stepper li.is-done .num { display: none; }
.stepper li.is-done .tick { display: inline-flex; }

.step { padding: 56px 0 8px; text-align: center; }
.step h2 { font-size: 1.75rem; font-weight: 650; letter-spacing: -0.02em; }
.step .sub { color: var(--muted); margin-top: 6px; }
.step-actions { margin-top: 28px; }

.type-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; max-width: 920px; margin: 36px auto 0; text-align: left; }
.type-card {
  display: flex; align-items: center; gap: 16px; width: 100%;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; cursor: pointer; text-align: left;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.type-card:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-1px); }
.type-icon { display: grid; place-items: center; width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--tone-bg); color: var(--tone); }
.type-icon svg.icon { width: 22px; height: 22px; }
.type-text { min-width: 0; }
.type-title { display: block; font-weight: 600; }
.type-hint { display: block; color: var(--muted); font-size: 0.875rem; }
.badge-dark { margin-left: auto; flex: none; background: var(--ink); color: #fff; font-size: 0.6875rem; font-weight: 700; border-radius: 999px; padding: 4px 10px; }

/* ---------- FAQ ---------- */
.faq { padding-bottom: 96px; }
.faq h2 { text-align: center; font-size: 1.75rem; font-weight: 650; letter-spacing: -0.02em; }
.faq-list { max-width: 760px; margin: 32px auto 0; display: grid; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 22px; }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ico { color: var(--muted); transition: transform .2s; }
.faq details[open] summary .ico { transform: rotate(180deg); }
.faq details p { padding: 0 0 18px; color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); }
.site-footer .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 28px 0; flex-wrap: wrap; }
.site-footer p { color: var(--muted); font-size: 0.9rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { padding-top: 44px; }
  .hero .container { grid-template-columns: 1fr; gap: 36px; }
  .hero-art { min-height: 340px; padding: 36px 20px; }
  .features .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .type-grid { grid-template-columns: 1fr; }
  .stepper .label { display: none; }
  .stepper li.is-active .label { display: inline; }
  .step { padding-top: 40px; }
}
@media (max-width: 520px) {
  .features .grid { grid-template-columns: 1fr; }
  .nav .link { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* ---------- Donate ---------- */
.donate-link { display: inline-flex; align-items: center; gap: 6px; }
[data-donate] .ico { color: #be123c; }
@media (max-width: 520px) { .nav .donate-link { display: none; } }