/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --surface-2: #f4f1ea;
  --ink: #1c1c22;
  --ink-soft: #52505a;
  --border: #e4e0d6;
  --accent: #d6602f;
  --accent-ink: #ffffff;
  --accent-soft: #fbe6da;
  --ok: #2f7d4f;
  --warn: #b8860a;
  --bad: #c03b2b;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --radius: 14px;
  --radius-sm: 8px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 1px 2px rgba(20,18,10,.04), 0 8px 24px rgba(20,18,10,.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151a;
    --surface: #1d1c22;
    --surface-2: #26252c;
    --ink: #f2f0ea;
    --ink-soft: #b7b4c0;
    --border: #34333c;
    --accent: #ef7a45;
    --accent-ink: #17130f;
    --accent-soft: #3a2418;
    --shadow-card: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { 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; }
input, select { font: inherit; color: inherit; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.12; letter-spacing: -0.01em; font-weight: 800; }
::selection { background: var(--accent-soft); color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 1180px; margin-inline: auto; padding-inline: 1.25rem; }
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }
.is-hidden { display: none !important; }

/* =============================================================
   4. Header / Footer
   ============================================================= */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 40; backdrop-filter: blur(6px); }
.header-row { display: flex; align-items: center; justify-content: space-between; padding-block: .9rem; }
.logo { display: flex; align-items: center; gap: .5rem; font-weight: 800; font-size: 1.15rem; color: var(--accent); }
.header-nav { display: flex; gap: 1.4rem; font-weight: 600; font-size: .92rem; }
.header-nav a { color: var(--ink-soft); transition: color .2s var(--ease-out); }
.header-nav a:hover { color: var(--accent); }
@media (max-width: 539px) { .header-nav { display: none; } }

.site-footer { border-top: 1px solid var(--border); margin-top: 4rem; padding-block: 1.8rem; color: var(--ink-soft); font-size: .88rem; }
.footer-row { display: flex; flex-wrap: wrap; gap: .8rem 1.6rem; align-items: center; justify-content: space-between; }
.footer-nav { display: flex; gap: 1.2rem; }
.footer-nav a:hover { color: var(--accent); }

/* =============================================================
   5. Hero
   ============================================================= */
.hero { padding-block: 2.6rem 1.6rem; text-align: center; }
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3rem); max-width: 20ch; margin-inline: auto; }
.hero-sub { margin-top: .9rem; color: var(--ink-soft); font-size: clamp(1rem, 1.6vw, 1.15rem); max-width: 56ch; margin-inline: auto; }

/* =============================================================
   6. Tool card
   ============================================================= */
.tool-section { padding-block: .5rem 2rem; }
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: clamp(1.1rem, 2.6vw, 2rem);
}
.tool-grid { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr); gap: clamp(1.4rem, 3vw, 2.4rem); align-items: start; }
@media (max-width: 959px) { .tool-grid { grid-template-columns: minmax(0,1fr); } }

.field-group { margin-bottom: 1.3rem; }
.field-group label { display: block; font-size: .82rem; font-weight: 700; color: var(--ink-soft); margin-bottom: .4rem; text-transform: uppercase; letter-spacing: .02em; }
.field-hint { font-size: .82rem; color: var(--ink-soft); margin-top: .5rem; }
.field-row { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: .8rem; }

input[type="text"], select {
  width: 100%; padding: .75rem .9rem; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); font-size: .96rem; transition: border-color .2s var(--ease-out);
}
input[type="text"]:focus, select:focus { border-color: var(--accent); }

.mode-tabs { display: flex; gap: .4rem; margin-bottom: .9rem; }
.mode-tab {
  flex: 1 1 0; min-width: 0; padding: .6rem .5rem; border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  font-weight: 700; font-size: .84rem; color: var(--ink-soft); transition: all .18s var(--ease-out);
}
.mode-tab.is-active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.mode-panel label { display: block; font-size: .82rem; font-weight: 700; color: var(--ink-soft); margin: .7rem 0 .35rem; text-transform: uppercase; letter-spacing: .02em; }
.mode-panel label:first-child { margin-top: 0; }

.style-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .5rem; }
.style-opt {
  display: flex; flex-direction: column; align-items: center; gap: .4rem; padding: .7rem .3rem; min-width: 0;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: .78rem; font-weight: 600; color: var(--ink-soft);
  transition: all .18s var(--ease-out);
}
.style-opt.is-active { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }
.style-swatch { width: 30px; height: 30px; display: grid; grid-template-columns: repeat(3,1fr); grid-template-rows: repeat(3,1fr); gap: 2px; }
.style-swatch::before, .style-swatch::after { content: ""; background: currentColor; grid-column: 1; grid-row: 1; }
.style-swatch--clasico { background-image: radial-gradient(currentColor 40%, transparent 41%); background-size: 10px 10px; }
.style-swatch--redondeado { border-radius: 8px; background: currentColor; opacity: .8; }
.style-swatch--puntos { background-image: radial-gradient(currentColor 34%, transparent 40%); background-size: 8px 8px; border-radius: 50%; }
.style-swatch--elegante { border-radius: 4px 12px 4px 12px; background: currentColor; opacity: .8; }

.color-input { display: flex; align-items: center; gap: .55rem; border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: .4rem .7rem; }
.color-input input[type="color"] { width: 32px; height: 32px; padding: 0; border: none; border-radius: 6px; background: none; cursor: pointer; }
.color-input span { font-family: var(--mono); font-size: .82rem; color: var(--ink-soft); }
#contrastHint { font-weight: 600; }
#contrastHint.is-ok { color: var(--ok); }
#contrastHint.is-warn { color: var(--warn); }
#contrastHint.is-bad { color: var(--bad); }

.center-row { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }
.emoji-picker { display: flex; flex-wrap: wrap; gap: .35rem; }
.emoji-opt { width: 38px; height: 38px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: 1.1rem; display: grid; place-items: center; transition: border-color .18s var(--ease-out); }
.emoji-opt.is-active { border-color: var(--accent); background: var(--accent-soft); }
.upload-btn { padding: .6rem 1rem; border: 1.5px dashed var(--border); border-radius: var(--radius-sm); font-weight: 700; font-size: .85rem; color: var(--ink-soft); transition: border-color .18s var(--ease-out); }
.upload-btn:hover { border-color: var(--accent); color: var(--accent); }
.upload-btn.has-file { border-style: solid; border-color: var(--ok); color: var(--ok); }

.qr-download-row { display: flex; gap: .7rem; flex-wrap: wrap; }
.qr-download-row--main { margin-top: .3rem; }

.btn {
  padding: .8rem 1.3rem; border-radius: var(--radius-sm); font-weight: 700; font-size: .92rem;
  transition: transform .15s var(--ease-out), box-shadow .15s var(--ease-out), background .15s var(--ease-out);
}
.btn-primary { background: var(--accent); color: var(--accent-ink); width: 100%; text-align: center; font-size: 1rem; padding: 1rem 1.3rem; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(214,96,47,.28); }
.btn-secondary { background: var(--surface-2); color: var(--ink); border: 1.5px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-link { display: block; text-align: center; width: 100%; margin-top: .6rem; font-size: .85rem; font-weight: 600; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; }
.btn-link:hover { color: var(--accent); }
.btn[disabled] { opacity: .55; pointer-events: none; }

.tool-preview { display: flex; flex-direction: column; gap: 1rem; }
.preview-2d { background: var(--surface-2); border-radius: var(--radius); padding: 1.4rem; display: grid; place-items: center; min-height: 260px; }
.qr-preview-canvas { width: 100%; max-width: 260px; aspect-ratio: 1; display: grid; place-items: center; }
.qr-preview-canvas canvas, .qr-preview-canvas img { max-width: 100%; border-radius: 6px; }

.tool-divider { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

.tool-3d-title { font-size: 1.3rem; margin-bottom: 1.1rem; }
.tool-3d-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(1.4rem, 3vw, 2.4rem); align-items: start; }
@media (max-width: 959px) { .tool-3d-grid { grid-template-columns: minmax(0,1fr); } }

.format-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .5rem; }
.format-opt {
  display: flex; flex-direction: column; align-items: center; gap: .35rem; padding: .8rem .3rem; min-width: 0;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: .72rem; font-weight: 700; color: var(--ink-soft);
  transition: all .18s var(--ease-out);
}
.format-opt svg { width: 30px; height: 30px; }
.format-opt.is-active { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }

.print-warnings { display: flex; flex-direction: column; gap: .4rem; margin: 1rem 0; }
.print-warning { display: flex; gap: .5rem; align-items: flex-start; font-size: .84rem; padding: .55rem .7rem; border-radius: var(--radius-sm); border: 1.5px solid; }
.print-warning--ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 8%, transparent); }
.print-warning--warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 8%, transparent); }
.print-warning--bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: color-mix(in srgb, var(--bad) 8%, transparent); }

.privacy-badge { font-size: .84rem; color: var(--ink-soft); margin-top: 1rem; }

.tool-3d-preview { display: flex; flex-direction: column; gap: .6rem; }
.viewer-3d { position: relative; background: var(--surface-2); border-radius: var(--radius); min-height: 320px; aspect-ratio: 4/3.4; overflow: hidden; touch-action: none; }
.viewer-3d canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; display: block; }
.viewer-3d-placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--ink-soft); font-size: .88rem; text-align: center; padding: 1rem; }
.viewer-3d-hint { text-align: center; font-size: .78rem; color: var(--ink-soft); }

/* =============================================================
   7. Ad slots
   ============================================================= */
.ad-slot {
  border: 1.5px dashed var(--border); border-radius: var(--radius-sm);
  display: grid; place-items: center; color: var(--ink-soft); font-weight: 700; font-size: .78rem;
  letter-spacing: .08em; margin-block: 2rem;
}
.ad-slot-label { opacity: .55; }
.ad-slot--leaderboard { min-height: 90px; }
.ad-slot--incontent { min-height: 250px; max-width: 728px; }
.ad-slot--popup { min-height: 200px; margin-block: 1rem; }

/* =============================================================
   8. Content sections
   ============================================================= */
.content-section { padding-block: 2.4rem; }
.content-section h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); margin-bottom: 1.4rem; text-align: center; }
.content-section--text p { max-width: 68ch; margin-inline: auto; color: var(--ink-soft); font-size: 1.02rem; }

.steps-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.2rem; counter-reset: step; }
@media (max-width: 719px) { .steps-grid { grid-template-columns: minmax(0,1fr); } }
.step-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; position: relative; }
.step-card::before { counter-increment: step; content: counter(step); position: absolute; top: -.7rem; left: 1.3rem; background: var(--accent); color: var(--accent-ink); width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .9rem; }
.step-card h3 { font-size: 1.05rem; margin: .6rem 0 .5rem; }
.step-card p { color: var(--ink-soft); font-size: .92rem; }

.ideas-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.1rem; }
@media (max-width: 959px) { .ideas-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 539px) { .ideas-grid { grid-template-columns: minmax(0,1fr); } }
.idea-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem; }
.idea-card .idea-icon { width: 34px; height: 34px; color: var(--accent); margin-bottom: .7rem; }
.idea-card h3 { font-size: 1rem; margin-bottom: .4rem; }
.idea-card p { color: var(--ink-soft); font-size: .88rem; }

.faq-list { max-width: 74ch; margin-inline: auto; display: flex; flex-direction: column; gap: .6rem; }
.faq-list details { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .2rem; }
.faq-list summary { padding: .9rem 1rem; font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-size: 1.3rem; color: var(--accent); flex-shrink: 0; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list .faq-answer { padding: 0 1.1rem 1.1rem; color: var(--ink-soft); font-size: .92rem; }

/* =============================================================
   9. Download dialog (pop-up)
   ============================================================= */
.download-dialog { border: none; border-radius: var(--radius); padding: 1.4rem; max-width: 380px; width: calc(100% - 2rem); box-shadow: 0 20px 50px rgba(0,0,0,.25); background: var(--surface); color: var(--ink); }
.download-dialog::backdrop { background: rgba(10,10,10,.5); }
.dialog-close { position: absolute; top: .8rem; right: .8rem; width: 30px; height: 30px; border-radius: 50%; background: var(--surface-2); font-size: 1rem; }
.dialog-kicker { font-weight: 700; margin-bottom: .3rem; padding-right: 2rem; }
.dialog-continue { width: 100%; margin-top: .3rem; }

/* =============================================================
   10. Corner toast
   ============================================================= */
.corner-toast {
  position: fixed; bottom: 1rem; right: 1rem; z-index: 50; background: var(--surface); border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm); padding: .8rem 2.2rem .8rem 1rem; box-shadow: var(--shadow-card);
  min-width: 180px; min-height: 60px; display: grid; place-items: center;
  opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.corner-toast.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.corner-toast-close { position: absolute; top: .4rem; right: .4rem; width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); font-size: .75rem; }
@media (max-width: 539px) { .corner-toast { right: .6rem; bottom: .6rem; min-width: 140px; } }

/* =============================================================
   11. Legal pages
   ============================================================= */
.legal-page { padding-block: 2.5rem 3rem; max-width: 74ch; }
.legal-page h1 { font-size: 1.9rem; margin-bottom: 1rem; }
.legal-page h2 { font-size: 1.2rem; margin: 1.6rem 0 .6rem; }
.legal-page p, .legal-page li { color: var(--ink-soft); }
.legal-page ul { padding-left: 1.2rem; margin-top: .4rem; }

/* =============================================================
   12. No-JS fallback
   ============================================================= */
.no-js-notice { display: none; }
.no-js .no-js-notice { display: block; background: var(--surface-2); border: 1.5px dashed var(--border); border-radius: var(--radius-sm); padding: 1rem; text-align: center; font-weight: 600; }
.no-js .tool-3d-preview, .no-js .viewer-3d { display: none; }