/* =============================================================
   MagniQR — styles.css
   1 Tokens · 2 Reset · 3 Utilities · 4 Typography · 5 Components
   6 Tool · 7 Ads · 8 Sections · 9 Responsive · 10 Reduced motion
   ============================================================= */

/* ===== 1. Tokens ===== */
:root{
  --bg:#f4f4f7;
  --surface:#ffffff;
  --surface-2:#fafafc;
  --ink:#14141b;
  --ink-2:#4a4a58;
  --ink-3:#7c7c8c;
  --line:#e4e4ed;
  --line-2:#d3d3e0;
  --accent:#5b4bff;
  --accent-ink:#ffffff;
  --accent-soft:#eeecff;
  --good:#0f8a6a;
  --warn:#a8600a;
  --warn-soft:#fdf3e3;
  --bad:#c02626;
  --bad-soft:#fdeaea;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,20,27,.05), 0 12px 32px -18px rgba(20,20,27,.28);
  --wrap:1180px;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --display:"Space Grotesk","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --ease-out:cubic-bezier(.16,1,.3,1);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0e0e13;
    --surface:#17171f;
    --surface-2:#1d1d27;
    --ink:#f2f2f6;
    --ink-2:#b4b4c4;
    --ink-3:#8b8b9e;
    --line:#2a2a37;
    --line-2:#3a3a4b;
    --accent:#8578ff;
    --accent-ink:#12121a;
    --accent-soft:#241f4d;
    --good:#3ec49b;
    --warn:#e5a24a;
    --warn-soft:#332711;
    --bad:#ff7b7b;
    --bad-soft:#3a1c1c;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 16px 40px -22px rgba(0,0,0,.9);
  }
}

/* ===== 2. Reset & base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%;tab-size:2;scroll-behavior:smooth;scroll-padding-top:76px}
body{
  font-family:var(--sans);font-size:16px;line-height:1.6;
  background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img,svg,canvas{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
p{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance;line-height:1.12;letter-spacing:-.02em;font-family:var(--display);font-weight:700}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ===== 3. Utilities ===== */
.wrap{width:min(100% - 2rem, var(--wrap));margin-inline:auto}
.skip-link{position:fixed;top:-100px;left:1rem;padding:.6rem 1rem;background:var(--accent);color:var(--accent-ink);z-index:9999;border-radius:8px;font-weight:600}
.skip-link:focus{top:1rem}
.section{padding-block:clamp(2.5rem,6vw,4.5rem)}
.hint{font-size:.82rem;color:var(--ink-3);margin-top:.4rem;line-height:1.45}

/* ===== 4. Header / footer ===== */
.site-header{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:.55rem;color:var(--accent)}
.brand-mark{border-radius:8px;flex:none}
.brand-name{font-family:var(--display);font-weight:700;font-size:1.18rem;letter-spacing:-.03em;color:var(--ink)}
.site-nav{display:none;gap:1.4rem;font-size:.9rem;color:var(--ink-2);font-weight:500}
.site-nav a:hover{color:var(--accent)}

.site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:3rem;padding-block:2rem}
.footer-inner{display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:space-between;align-items:flex-start}
.footer-brand{font-family:var(--display);font-weight:700;font-size:1.05rem}
.footer-note{font-size:.85rem;color:var(--ink-3);max-width:46ch;margin-top:.3rem}
.footer-nav{display:flex;flex-wrap:wrap;gap:1.2rem;font-size:.87rem;color:var(--ink-2)}
.footer-nav a:hover{color:var(--accent);text-decoration:underline}

/* ===== 5. Hero ===== */
.hero{padding-block:.85rem .9rem;text-align:center}
.eyebrow{display:inline-block;font-size:.7rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:.25rem .6rem;border-radius:99px}
h1{font-size:clamp(1.55rem,5vw,2.9rem);margin-top:.5rem}
.lede{color:var(--ink-2);max-width:62ch;margin:.5rem auto 0;font-size:clamp(.88rem,2vw,1.06rem)}
@media (min-width:720px){ .hero{padding-block:clamp(1.5rem,4vw,2.75rem) 1.25rem} h1{margin-top:.7rem} .lede{margin-top:.7rem} }
.noscript-note{background:var(--warn-soft);color:var(--warn);border:1px solid currentColor;padding:.8rem 1rem;border-radius:var(--radius-sm);font-size:.9rem;margin-bottom:1rem}

/* ===== 6. The tool ===== */
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(1rem,2.5vw,1.6rem)}
.tool-grid{display:grid;gap:1.5rem}
.panel-title{font-size:.98rem;display:flex;align-items:center;gap:.5rem;margin-bottom:.7rem;letter-spacing:-.01em}
.step-dot{display:grid;place-items:center;width:1.45rem;height:1.45rem;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-size:.78rem;font-weight:700;flex:none}
.rule{border:0;border-top:1px solid var(--line);margin:1.5rem 0}

.field{display:block;margin-bottom:.9rem}
.field-label{display:block;font-size:.82rem;font-weight:600;color:var(--ink-2);margin-bottom:.35rem}
.field-label em{font-style:normal;font-weight:400;color:var(--ink-3)}
.field-row{display:grid;grid-template-columns:1fr;gap:.9rem}
@media(min-width:540px){.field-row{grid-template-columns:1fr auto}.field-row .field{margin-bottom:.9rem}.field-narrow{min-width:9.5rem}}
.input{
  width:100%;padding:.6rem .75rem;font-size:.95rem;font-family:inherit;color:var(--ink);
  background:var(--surface-2);border:1px solid var(--line-2);border-radius:var(--radius-sm);
  transition:border-color .18s var(--ease-out), box-shadow .18s var(--ease-out);
}
.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.input-mini{width:auto;padding:.45rem .5rem;font-size:.82rem}
.input-hex{width:6.6rem;font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.82rem;text-transform:uppercase}
select.input{cursor:pointer}
.color-wrap{display:flex;align-items:center;gap:.5rem}
.color{width:2.7rem;height:2.35rem;padding:2px;border:1px solid var(--line-2);border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer;flex:none}
.range{width:100%;accent-color:var(--accent);height:1.6rem;cursor:pointer}

.chips{display:flex;gap:.45rem}
.chips-wrap{flex-wrap:wrap}
.chip{
  padding:.45rem .85rem;font-size:.86rem;font-weight:500;border-radius:99px;
  background:var(--surface-2);border:1px solid var(--line-2);color:var(--ink-2);
  transition:all .18s var(--ease-out);
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}

.presets{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:-.4rem}
.preset{font-size:.79rem;padding:.3rem .6rem;border-radius:8px;background:var(--surface-2);border:1px dashed var(--line-2);color:var(--ink-3)}
.preset:hover{border-style:solid;border-color:var(--accent);color:var(--accent)}

.swatches{display:flex;flex-wrap:wrap;gap:.4rem;margin:-.35rem 0 1rem}
.swatch{display:inline-flex;align-items:center;gap:.4rem;font-size:.78rem;color:var(--ink-3);padding:.28rem .55rem .28rem .3rem;border-radius:99px;border:1px solid var(--line-2);background:var(--surface-2)}
.swatch:hover{border-color:var(--accent);color:var(--accent)}
.swatch i{width:1.05rem;height:1.05rem;border-radius:50%;background:linear-gradient(135deg,var(--a) 0 50%,var(--b) 50% 100%);border:1px solid var(--line-2);flex:none}

.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:.3rem}
.emoji{aspect-ratio:1;display:grid;place-items:center;font-size:1.15rem;line-height:1;border-radius:9px;background:var(--surface-2);border:1px solid var(--line);transition:all .15s var(--ease-out)}
.emoji:hover{border-color:var(--accent);transform:translateY(-1px)}
.emoji.is-on{background:var(--accent-soft);border-color:var(--accent)}
.center-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:.6rem}
.center-state{font-size:.78rem;color:var(--ink-3)}

.formats{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}
.format{
  display:flex;flex-direction:column;align-items:center;gap:.2rem;text-align:center;
  padding:.7rem .4rem;border-radius:var(--radius-sm);border:1px solid var(--line-2);
  background:var(--surface-2);color:var(--ink-3);transition:all .18s var(--ease-out);
}
.format svg{width:34px;height:34px;color:var(--ink-3);transition:color .18s var(--ease-out)}
.format b{font-size:.8rem;color:var(--ink);font-weight:600;line-height:1.2}
.format small{font-size:.7rem;color:var(--ink-3);line-height:1.2}
.format:hover{border-color:var(--accent)}
.format.is-on{border-color:var(--accent);background:var(--accent-soft)}
.format.is-on svg{color:var(--accent)}

/* previews */
.preview-block{margin-bottom:1.25rem}
.preview-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.preview-head .panel-title{margin-bottom:.5rem}
.badge{font-size:.72rem;font-weight:600;padding:.2rem .55rem;border-radius:99px;background:var(--accent-soft);color:var(--accent);white-space:nowrap}
.badge-soft{background:var(--surface-2);color:var(--ink-3);border:1px solid var(--line)}
.badge.is-bad{background:var(--bad-soft);color:var(--bad)}

.qr-stage{display:grid;place-items:center;padding:1rem;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);min-height:220px}
.qr-holder{width:min(260px,72vw);aspect-ratio:1;display:grid;place-items:center}
.qr-holder canvas,.qr-holder svg{width:100%!important;height:auto!important;border-radius:6px}

.viewer-stage{position:relative;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;min-height:280px}
.viewer{width:100%;height:300px;touch-action:pan-y}
.viewer canvas{width:100%;height:100%;display:block;cursor:grab}
.viewer canvas:active{cursor:grabbing}
.viewer-msg{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:1.5rem;font-size:.87rem;color:var(--ink-3);pointer-events:none}
.viewer-msg[hidden]{display:none}
.viewer-hint{position:absolute;left:.6rem;bottom:.5rem;font-size:.7rem;color:var(--ink-3);background:color-mix(in srgb,var(--surface) 80%,transparent);padding:.15rem .45rem;border-radius:6px;pointer-events:none}

.warnings{list-style:none;padding:0;margin:.7rem 0 0;display:grid;gap:.4rem}
.warnings li{font-size:.8rem;line-height:1.4;padding:.5rem .65rem;border-radius:9px;display:flex;gap:.45rem;align-items:flex-start}
.warnings li::before{content:"!";flex:none;width:1.05rem;height:1.05rem;border-radius:50%;display:grid;place-items:center;font-size:.7rem;font-weight:700;background:currentColor;color:var(--surface)}
.warnings .w-bad{background:var(--bad-soft);color:var(--bad)}
.warnings .w-warn{background:var(--warn-soft);color:var(--warn)}
.warnings .w-ok{background:color-mix(in srgb,var(--good) 12%,transparent);color:var(--good)}
.warnings .w-ok::before{content:"✓"}

.dl-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:.7rem}
.dl-main{flex-direction:column;align-items:stretch}
.btn{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  padding:.65rem 1.05rem;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;
  border:1px solid transparent;transition:all .18s var(--ease-out);text-align:center;
}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--accent);color:var(--accent-ink);padding:.8rem 1.2rem;font-size:1rem;box-shadow:0 8px 20px -12px var(--accent)}
.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 26px -12px var(--accent)}
.btn-main{display:block}
.btn-sub{display:block;font-size:.72rem;font-weight:500;opacity:.82;margin-top:.1rem}
.btn-ghost{background:var(--surface-2);border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.btn-soft{background:var(--surface-2);border-color:var(--line-2);color:var(--ink-2);font-size:.83rem;padding:.45rem .8rem}
.btn-soft:hover{border-color:var(--accent);color:var(--accent)}
.btn-file{cursor:pointer}
.btn-link{background:none;color:var(--ink-3);font-size:.82rem;font-weight:500;text-decoration:underline;text-underline-offset:3px;padding:.35rem}
.btn-link:hover:not(:disabled){color:var(--accent)}
.btn.is-busy{opacity:.65;pointer-events:none}

.privacy-badge{font-size:.8rem;color:var(--ink-2);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:.6rem .75rem;line-height:1.45}

/* ===== 7. Ad placeholders ===== */
.ad-slot{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.2rem;
  border:1px dashed var(--line-2);border-radius:var(--radius-sm);
  background:repeating-linear-gradient(135deg,transparent 0 10px,color-mix(in srgb,var(--line) 40%,transparent) 10px 11px);
  color:var(--ink-3);margin-block:1.5rem;
}
.ad-tag{font-size:.68rem;font-weight:700;letter-spacing:.16em}
.ad-size{font-size:.66rem;opacity:.7}
.ad-leaderboard{min-height:96px}
.ad-inline{min-height:260px}
.ad-corner{
  position:fixed;right:.75rem;bottom:.75rem;z-index:80;width:min(300px,calc(100vw - 1.5rem));min-height:100px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.2rem;
  border:1px dashed var(--line-2);border-radius:var(--radius-sm);background:var(--surface);
  box-shadow:var(--shadow);color:var(--ink-3);padding:.75rem;
}
.ad-corner[hidden]{display:none}
.ad-corner-close{position:absolute;top:-.5rem;right:-.5rem;width:1.6rem;height:1.6rem;border-radius:50%;background:var(--ink);color:var(--bg);font-size:1rem;line-height:1;display:grid;place-items:center}
.ad-modal{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);
  padding:1.1rem;width:min(360px,calc(100vw - 2rem));box-shadow:0 24px 60px -20px rgba(0,0,0,.45);
}
.ad-modal::backdrop{background:rgba(10,10,16,.55)}
.ad-modal-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.75rem}
.ad-modal-title{font-weight:600;font-size:.95rem}
.ad-modal-x{width:1.9rem;height:1.9rem;border-radius:50%;background:var(--surface-2);border:1px solid var(--line);font-size:1.15rem;line-height:1;display:grid;place-items:center;color:var(--ink-2)}
.ad-modal-x:hover{border-color:var(--accent);color:var(--accent)}
.ad-modal-slot{min-height:250px;margin:0}
.ad-modal-continue{width:100%;margin-top:.85rem}

/* ===== 8. Sections ===== */
.section-title{font-size:clamp(1.35rem,3.4vw,1.9rem);margin-bottom:.5rem}
.section-lede{color:var(--ink-2);margin-bottom:1.5rem}
.steps{list-style:none;padding:0;display:grid;gap:1rem;margin-top:1.5rem}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;position:relative}
.step-num{display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-family:var(--display);font-weight:700;margin-bottom:.7rem}
.step h3{font-size:1.05rem;margin-bottom:.35rem}
.step p{font-size:.9rem;color:var(--ink-2)}

.prose{max-width:74ch}
.prose h3{font-size:1.1rem;margin:1.6rem 0 .5rem}
.prose p{margin-bottom:.9rem;color:var(--ink-2)}
.prose strong{color:var(--ink)}
.prose code{font-family:ui-monospace,"SFMono-Regular",Menlo,monospace;font-size:.86em;background:var(--surface);border:1px solid var(--line);border-radius:5px;padding:.05em .35em}

.ideas{display:grid;gap:.85rem;grid-template-columns:1fr}
.idea{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem}
.idea-ico{font-size:1.5rem;line-height:1;display:block;margin-bottom:.5rem}
.idea h3{font-size:.98rem;margin-bottom:.3rem}
.idea p{font-size:.86rem;color:var(--ink-2)}

.faq{display:grid;gap:.5rem;max-width:80ch}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.faq summary{padding:.9rem 1.05rem;font-weight:600;font-size:.94rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.25rem;color:var(--accent);flex:none;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 1.05rem 1.05rem;font-size:.89rem;color:var(--ink-2)}

/* ===== 9. Responsive ===== */
@media (min-width:540px){
  .ideas{grid-template-columns:repeat(2,1fr)}
  .dl-main{flex-direction:row;align-items:center}
  .dl-main .btn-primary{flex:1 1 auto}
}
@media (min-width:720px){
  .site-nav{display:flex}
  .steps{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:960px){
  .tool-grid{
    grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);
    grid-template-areas:"a b" "c b";
    align-items:start;column-gap:1.75rem;row-gap:1.25rem;
  }
  .panel-a{grid-area:a}
  .panel-b{grid-area:b}
  .panel-c{grid-area:c}
  .viewer{height:340px}
  .ideas{grid-template-columns:repeat(4,1fr)}
}
@media (min-width:1280px){
  .qr-holder{width:280px}
}

/* ===== 10. Reduced motion (only intrusive effects) ===== */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .btn-primary:hover:not(:disabled){transform:none}
}

/* ===== 11. Print ===== */
@media print{
  .site-header,.site-footer,.ad-slot,.ad-corner,.ad-modal,.dl-row,.panel-a,.panel-c{display:none!important}
}