/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #F7F7FA;
  --bg-card: #FFFFFF;
  --bg-raised: #FFFFFF;
  --bg-sunken: #F0F1F5;
  --text: #16171C;
  --text-soft: #53565F;
  --text-faint: #85888F;
  --border: #E3E4E9;
  --border-strong: #C9CBD3;
  --accent: #3654F2;
  --accent-ink: #FFFFFF;
  --accent-soft: #E9ECFF;
  --success: #1B8A5A;
  --danger: #D64545;
  --warn: #B4740E;
  --shadow-sm: 0 1px 2px rgba(15,17,26,.06);
  --shadow-md: 0 8px 24px rgba(15,17,26,.08);
  --shadow-lg: 0 20px 48px rgba(15,17,26,.14);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --sans: "Manrope", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101116;
    --bg-card: #16171E;
    --bg-raised: #1B1C24;
    --bg-sunken: #0C0D11;
    --text: #F1F1F5;
    --text-soft: #B7B9C4;
    --text-faint: #797C87;
    --border: #2A2C36;
    --border-strong: #383B47;
    --accent: #6D82FF;
    --accent-ink: #0C0D11;
    --accent-soft: #232744;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 8px 24px rgba(0,0,0,.35);
    --shadow-lg: 0 20px 48px rgba(0,0,0,.5);
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  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 { font: inherit; color: inherit; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; font-weight: 800; }
::selection { background: var(--accent); color: var(--accent-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: var(--container); margin-inline: auto; padding-inline: 1.25rem; }
.container--narrow { max-width: 760px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.is-hidden { display: none !important; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--text); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: .95rem;
  transition: transform .15s var(--ease-out), box-shadow .15s var(--ease-out), background .15s var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: var(--shadow-sm); }
.btn-primary:hover { box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--bg-sunken); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--border-strong); }
.btn-ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent-soft); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-sm { padding: .5rem .85rem; font-size: .85rem; }
.btn-lg { padding: .95rem 1.5rem; font-size: 1.02rem; width: 100%; }
.btn[disabled] { opacity: .55; pointer-events: none; }
.link-btn {
  display: block; text-align: center; margin-top: .6rem;
  font-size: .85rem; color: var(--text-soft); text-decoration: underline;
  text-underline-offset: 3px;
}
.link-btn:hover { color: var(--text); }

/* =============================================================
   5. Header
   ============================================================= */
.site-header { padding-block: 1.1rem; border-bottom: 1px solid var(--border); background: var(--bg); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.15rem; }
.brand-mark { width: 26px; height: 26px; color: var(--accent); }
.header-nav { display: flex; gap: 1.5rem; font-weight: 600; font-size: .92rem; color: var(--text-soft); }
.header-nav a:hover { color: var(--text); }
@media (max-width: 719px) { .header-nav { display: none; } }

/* =============================================================
   6. Hero
   ============================================================= */
.hero { padding-block: 2.4rem 1.6rem; text-align: center; }
.eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--accent); background: var(--accent-soft);
  padding: .3rem .75rem; border-radius: 999px; margin-bottom: 1rem;
}
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3rem); max-width: 18ch; margin-inline: auto; }
.hero-sub {
  margin: 1rem auto 0; max-width: 56ch; color: var(--text-soft); font-size: 1.05rem;
}

/* =============================================================
   7. Tool card
   ============================================================= */
.tool-section { padding-block: 1.2rem 2.5rem; }
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.4rem;
}
.tool-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 960px) {
  .tool-grid { grid-template-columns: 1.05fr .95fr; gap: 2.5rem; align-items: start; }
}

.control-block { padding-block: 1.1rem; border-top: 1px solid var(--border); }
.control-block:first-child { padding-top: 0; border-top: 0; }
.control-title { font-size: 1rem; margin-bottom: .9rem; }
.field-label {
  display: block; font-size: .82rem; font-weight: 700; color: var(--text-soft);
  margin: .9rem 0 .4rem;
}
.field-label:first-of-type { margin-top: 0; }

.text-input, select.text-input {
  width: 100%; padding: .7rem .85rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-sunken); color: var(--text);
  font-size: .95rem; transition: border-color .15s var(--ease-out);
}
.text-input:focus { border-color: var(--accent); outline: none; }
.check-row { display: flex; align-items: center; gap: .5rem; margin-top: .6rem; font-size: .9rem; color: var(--text-soft); }

.seg { display: inline-flex; background: var(--bg-sunken); border-radius: 999px; padding: .25rem; gap: .25rem; }
.seg-btn { padding: .5rem 1rem; border-radius: 999px; font-weight: 700; font-size: .85rem; color: var(--text-soft); }
.seg-btn.is-active { background: var(--bg-card); color: var(--text); box-shadow: var(--shadow-sm); }
.mode-panel { margin-top: 1rem; }

.style-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
.style-btn {
  display: flex; flex-direction: column; align-items: center; gap: .45rem;
  padding: .7rem .35rem; border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  font-size: .74rem; font-weight: 700; color: var(--text-soft); background: var(--bg-sunken);
  transition: border-color .15s var(--ease-out), color .15s var(--ease-out);
}
.style-btn.is-active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.style-swatch { width: 26px; height: 26px; border-radius: 6px; background: currentColor; opacity: .85; }
.style-swatch--clasico { border-radius: 4px; }
.style-swatch--redondeado { border-radius: 9px; }
.style-swatch--puntos { border-radius: 50%; }
.style-swatch--elegante { border-radius: 30% 9px 30% 9px; }

.color-row { display: flex; gap: .9rem; }
.color-field { display: flex; flex-direction: column; gap: .35rem; font-size: .78rem; font-weight: 700; color: var(--text-soft); flex: 1; }
.color-field input[type="color"] {
  width: 100%; height: 42px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  padding: 3px; background: var(--bg-sunken); cursor: pointer;
}
.preset-swatches { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .6rem; }
.preset-swatch {
  width: 30px; height: 30px; border-radius: 50%; border: 2px solid var(--border);
  cursor: pointer; position: relative; overflow: hidden; flex-shrink: 0;
}
.preset-swatch:hover, .preset-swatch:focus-visible { border-color: var(--accent); }
.preset-swatch span { position: absolute; inset: 0; }
.preset-swatch span:first-child { clip-path: polygon(0 0, 100% 0, 0 100%); }
.preset-swatch span:last-child { clip-path: polygon(100% 0, 100% 100%, 0 100%); }
.preset-swatch--solid { border-radius: 50%; }

.center-row { display: flex; flex-wrap: wrap; gap: .55rem; align-items: center; }
.emoji-picker {
  margin-top: .7rem; display: grid; grid-template-columns: repeat(8, 1fr); gap: .3rem;
  max-height: 190px; overflow-y: auto; padding: .6rem; background: var(--bg-sunken);
  border-radius: var(--radius-sm); border: 1px solid var(--border);
}
.emoji-opt { font-size: 1.3rem; padding: .3rem; border-radius: 6px; text-align: center; }
.emoji-opt:hover { background: var(--bg-card); }

.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .55rem; }
.format-btn {
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  padding: .85rem .4rem; border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  font-size: .76rem; font-weight: 700; color: var(--text-soft); background: var(--bg-sunken);
  text-align: center;
}
.format-btn.is-active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.format-icon { width: 30px; height: 30px; }
.format-desc { margin-top: .6rem; font-size: .84rem; color: var(--text-faint); }

.warnings { display: flex; flex-direction: column; gap: .5rem; margin-top: 1rem; }
.warning-item {
  display: flex; gap: .5rem; align-items: flex-start; padding: .6rem .75rem;
  border-radius: var(--radius-sm); font-size: .82rem; line-height: 1.4;
}
.warning-item--ok { background: rgba(27,138,90,.1); color: var(--success); }
.warning-item--warn { background: rgba(180,116,14,.12); color: var(--warn); }
.warning-item--danger { background: rgba(214,69,69,.12); color: var(--danger); }

/* =============================================================
   8. Preview column
   ============================================================= */
.tool-preview { display: flex; flex-direction: column; gap: 1rem; position: sticky; top: 1rem; }
@media (max-width: 959px) { .tool-preview { position: static; } }

.preview-2d-wrap {
  background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 1.2rem; display: flex; justify-content: center;
}
.preview-2d { width: min(260px, 100%); aspect-ratio: 1; }
.preview-2d canvas, .preview-2d img { width: 100%; height: 100%; border-radius: 10px; }

.preview-3d-wrap {
  background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: .8rem; position: relative;
}
.preview-3d { width: 100%; aspect-ratio: 4/3; border-radius: 10px; overflow: hidden; position: relative; background: var(--bg-card); touch-action: none; }
.preview-3d canvas { width: 100% !important; height: 100% !important; display: block; }
.preview-3d-placeholder {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: .85rem; text-align: center; padding: 1rem;
}
.preview-3d-hint { text-align: center; font-size: .76rem; color: var(--text-faint); margin-top: .5rem; }

.privacy-badge {
  font-size: .8rem; color: var(--text-soft); background: var(--bg-sunken);
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: .7rem .9rem; line-height: 1.45;
}

.download-block { display: flex; flex-direction: column; gap: .4rem; }
.download-label { font-size: .78rem; font-weight: 700; color: var(--text-soft); margin-top: .6rem; }
.download-label:first-child { margin-top: 0; }
.download-row { display: flex; gap: .6rem; flex-wrap: wrap; }
.download-row .btn { flex: 1; min-width: 130px; }
.limits-note { font-size: .74rem; color: var(--text-faint); margin-top: .3rem; text-align: center; }

/* =============================================================
   9. Ad slots
   ============================================================= */
.ad-slot {
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius-sm);
  background: var(--bg-sunken); display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); position: relative; min-height: 90px;
}
.ad-slot-label {
  font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-faint);
}
.ad-slot--leaderboard { margin-top: 2rem; min-height: 100px; }
.ad-slot--incontent { min-height: 250px; margin-block: 2.5rem; }
.ad-slot--dialog { min-height: 200px; margin-bottom: 1rem; }

.ad-corner {
  position: fixed; bottom: 1rem; right: 1rem; z-index: 500;
  width: 220px; background: var(--bg-card); border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); padding: .9rem;
  animation: adCornerIn .35s var(--ease-out);
}
@keyframes adCornerIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.ad-corner-close {
  position: absolute; top: .3rem; right: .5rem; font-size: 1.1rem; color: var(--text-faint); line-height: 1;
  padding: .2rem .4rem;
}
.ad-corner-close:hover { color: var(--text); }
.ad-corner-text { font-size: .78rem; color: var(--text-faint); margin-top: .4rem; }

dialog.ad-dialog {
  border: none; border-radius: var(--radius-md); padding: 1.4rem; box-shadow: var(--shadow-lg);
  width: min(420px, 90vw); background: var(--bg-card); color: var(--text); position: relative;
}
dialog.ad-dialog::backdrop { background: rgba(10,10,14,.55); }
.ad-dialog-close {
  position: absolute; top: .7rem; right: .8rem; font-size: 1.3rem; color: var(--text-faint); line-height: 1;
  padding: .2rem .5rem; border-radius: 6px;
}
.ad-dialog-close:hover { color: var(--text); background: var(--bg-sunken); }
.ad-dialog-caption { font-size: .9rem; color: var(--text-soft); text-align: center; margin-bottom: 1rem; }
.ad-dialog .btn { width: 100%; }

/* =============================================================
   10. Content sections
   ============================================================= */
.section { padding-block: 2.6rem; }
.section-title { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1.6rem; text-align: center; }
.section--text p { color: var(--text-soft); margin-bottom: 1rem; }
.section--text p:last-child { margin-bottom: 0; }

.steps-grid { display: grid; grid-template-columns: 1fr; gap: 1.2rem; }
@media (min-width: 720px) { .steps-grid { grid-template-columns: repeat(3, 1fr); } }
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.4rem; }
.step-card h3 { font-size: 1.05rem; margin-bottom: .5rem; color: var(--accent); }
.step-card p { color: var(--text-soft); font-size: .92rem; }

.usecases-grid { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }
@media (min-width: 720px) { .usecases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .usecases-grid { grid-template-columns: repeat(3, 1fr); } }
.usecase-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.3rem; }
.usecase-emoji { font-size: 1.8rem; margin-bottom: .6rem; display: block; }
.usecase-card h3 { font-size: 1rem; margin-bottom: .4rem; }
.usecase-card p { color: var(--text-soft); font-size: .88rem; }

.faq-list { display: flex; flex-direction: column; gap: .7rem; }
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .3rem .2rem;
}
.faq-item summary {
  cursor: pointer; list-style: none; padding: .9rem 1rem; font-weight: 700; font-size: .96rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--accent); font-weight: 400; flex-shrink: 0; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 1rem 1rem; color: var(--text-soft); font-size: .9rem; }

.moretools-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 720px) { .moretools-grid { grid-template-columns: repeat(3, 1fr); } }
.moretool-card {
  background: var(--bg-card); border: 1px dashed var(--border-strong); border-radius: var(--radius-md);
  padding: 1.2rem; color: var(--text-faint);
}
.moretool-card h3 { font-size: .95rem; color: var(--text-soft); margin-bottom: .3rem; }
.moretool-card p { font-size: .82rem; }

/* =============================================================
   11. Footer
   ============================================================= */
.site-footer { border-top: 1px solid var(--border); padding-block: 1.6rem; margin-top: 1rem; }
.footer-row { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; font-size: .82rem; color: var(--text-faint); }
.footer-nav { display: flex; gap: 1.2rem; }
.footer-nav a:hover { color: var(--text); }

/* =============================================================
   12. No-JS notice
   ============================================================= */
.js-required-note {
  padding: 1rem; border-radius: var(--radius-sm); background: var(--bg-sunken);
  border: 1px solid var(--border); color: var(--text-soft); text-align: center; font-size: .9rem;
  margin-bottom: 1rem;
}

/* =============================================================
   13. Responsive tweaks
   ============================================================= */
@media (max-width: 539px) {
  .style-grid { grid-template-columns: repeat(2, 1fr); }
  .download-row .btn { min-width: 100%; }
}

/* =============================================================
   14. Reduced-motion — only intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .ad-corner { animation: none; }
}