/* =============================================================
   kitbox — QR para imprimir en 3D
   Sistema visual: claro por defecto, oscuro conmutable ([data-theme]).
   Neutros cálidos, un único acento, detalle cuidado.
   ============================================================= */

/* -------------------------------------------------------------
   1. Tokens — tema claro (base)
   ------------------------------------------------------------- */
:root {
  color-scheme: light;

  --paper:      #faf8f4;   /* fondo cálido, no gris frío */
  --surface:    #ffffff;
  --surface-2:  #f2efe8;   /* zonas hundidas / previsualización */
  --ink:        #1c1a17;   /* casi negro cálido */
  --ink-2:      #55514a;
  --ink-3:      #8a857c;
  --line:       #e7e1d6;   /* filete con tinte tostado */
  --line-2:     #d7cfbf;

  --accent:      #4a3aef;
  --accent-press:#3a2cd0;
  --accent-tint: #eeecff;
  --accent-ink:  #ffffff;

  --ok:     #1a7a4d;
  --warn:   #9a5a12;
  --danger: #bd3a2c;

  --shadow-sm: 0 1px 2px rgba(28, 26, 23, .05);
  --shadow-md: 0 2px 6px -2px rgba(28, 26, 23, .06), 0 14px 34px -14px rgba(28, 26, 23, .16);

  --radius:    13px;
  --radius-lg: 20px;
  --radius-sm: 9px;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Noto Sans", sans-serif;
  --display: "Space Grotesk", var(--sans);
  --wrap: 1120px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Tema oscuro — activado por el script anti-parpadeo (data-theme="dark").
   Además, respeto de prefers-color-scheme cuando el JS no ha corrido. */
:root[data-theme="dark"] {
  color-scheme: dark;

  --paper:      #0f0e12;
  --surface:    #17161c;
  --surface-2:  #1e1c24;
  --ink:        #f1eff2;
  --ink-2:      #aca7b4;
  --ink-3:      #726d7c;
  --line:       #272530;
  --line-2:     #37343f;

  --accent:      #8f83ff;
  --accent-press:#a79dff;
  --accent-tint: #1d1a2e;
  --accent-ink:  #0f0e12;

  --ok:     #46cf8f;
  --warn:   #e0a341;
  --danger: #ef7d6f;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-md: 0 4px 14px -4px rgba(0, 0, 0, .55), 0 20px 50px -18px rgba(0, 0, 0, .7);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    color-scheme: dark;
    --paper: #0f0e12; --surface: #17161c; --surface-2: #1e1c24;
    --ink: #f1eff2; --ink-2: #aca7b4; --ink-3: #726d7c;
    --line: #272530; --line-2: #37343f;
    --accent: #8f83ff; --accent-press: #a79dff; --accent-tint: #1d1a2e; --accent-ink: #0f0e12;
    --ok: #46cf8f; --warn: #e0a341; --danger: #ef7d6f;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.5);
    --shadow-md: 0 4px 14px -4px rgba(0,0,0,.55), 0 20px 50px -18px rgba(0,0,0,.7);
  }
}

/* -------------------------------------------------------------
   2. Reset y 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: 1.62;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { font-family: var(--display); line-height: 1.1; letter-spacing: -0.021em; text-wrap: balance; font-weight: 700; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 5px; }

/* RTL: invierte cajas y alineaciones donde importa */
[dir="rtl"] .field-label,
[dir="rtl"] .preview-head,
[dir="rtl"] .warnings li { text-align: right; }
[dir="rtl"] .warnings li { padding-left: 0; padding-right: 22px; }
[dir="rtl"] .warnings li::before { left: auto; right: 4px; }
[dir="rtl"] .fmt-btn { text-align: right; }
[dir="rtl"] .faq summary { flex-direction: row-reverse; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.skip-link {
  position: fixed; inset-block-start: -100px; inset-inline-start: 16px; z-index: 999;
  padding: .6rem 1rem; background: var(--accent); color: var(--accent-ink);
  border-radius: 8px; font-weight: 600;
}
.skip-link:focus { inset-block-start: 16px; }
.is-hidden, [hidden] { display: none !important; }

/* -------------------------------------------------------------
   3. Cabecera
   ------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--display); font-weight: 700; font-size: 1.16rem; letter-spacing: -0.02em; flex-shrink: 0; }
.brand-mark { color: var(--accent); display: inline-flex; }
.brand-mark svg { width: 22px; height: 22px; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--line-2); color: var(--ink-2);
  background: var(--surface);
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.icon-btn:hover { color: var(--ink); border-color: var(--accent); }
.icon-btn svg { width: 18px; height: 18px; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-toggle .i-sun { display: block; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-toggle .i-moon { display: none; }
}

.lang-select {
  height: 38px; padding: 0 30px 0 12px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2);
  font-size: .88rem; font-weight: 500; cursor: pointer;
  max-width: 148px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238a857c' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 9px center;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
[dir="rtl"] .lang-select { padding: 0 12px 0 30px; background-position: left 9px center; }
.lang-select:hover { color: var(--ink); border-color: var(--accent); }

.nav-tools {
  display: inline-flex; align-items: center; gap: .4rem; height: 38px;
  padding: 0 .85rem; border-radius: 999px; border: 1px solid var(--line-2);
  font-size: .9rem; font-weight: 500; color: var(--ink-2); background: var(--surface);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.nav-tools:hover { color: var(--ink); border-color: var(--accent); }
.nav-tools svg { width: 15px; height: 15px; }
.nav-tools .nav-tools-short { display: none; }
.header-nav { position: relative; flex-shrink: 0; }

/* Cabecera compacta en pantallas estrechas — sin desbordes */
@media (max-width: 820px) {
  .nav-tools .nav-tools-full { display: none; }
  .nav-tools .nav-tools-short { display: inline; }
}
@media (max-width: 560px) {
  .header-inner { gap: 8px; }
  .header-actions { gap: 6px; }
  .lang-select { max-width: 112px; font-size: .82rem; padding: 0 24px 0 10px; background-position: right 7px center; }
  [dir="rtl"] .lang-select { padding: 0 10px 0 24px; background-position: left 7px center; }
  .nav-tools { padding: 0; width: 38px; justify-content: center; }
  .nav-tools .nav-tools-full, .nav-tools .nav-tools-short { display: none; }
  .tools-menu { width: min(280px, calc(100vw - 24px)); }
}
@media (max-width: 360px) {
  .lang-select { max-width: 92px; }
}
.tools-menu {
  position: absolute; inset-inline-end: 0; top: calc(100% + 10px); width: 290px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-md); padding: 7px; display: grid; gap: 2px;
}
.tools-menu a { display: block; padding: 9px 11px; border-radius: var(--radius-sm); }
.tools-menu a:hover { background: var(--surface-2); }
.tools-menu a strong { display: block; font-size: .92rem; }
.tools-menu a span { display: block; font-size: .8rem; color: var(--ink-3); margin-top: 1px; }
.tools-menu a[aria-disabled="true"] { opacity: .55; pointer-events: none; }

/* -------------------------------------------------------------
   4. Hero + tarjeta de la herramienta
   ------------------------------------------------------------- */
.hero { padding: clamp(22px, 5vw, 58px) 0 6px; text-align: center; }
.hero .wrap { max-width: 900px; }
.hero h1 { font-size: clamp(1.85rem, 5vw, 3.05rem); letter-spacing: -0.03em; }
.hero-sub {
  max-width: 620px; margin: 15px auto 26px; color: var(--ink-2);
  font-size: clamp(1rem, 1.5vw, 1.12rem); line-height: 1.55;
}
.hero-sub strong { color: var(--ink); font-weight: 600; }

.tool-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  padding: clamp(15px, 3.2vw, 30px); text-align: start;
}
.tool-grid { display: grid; gap: clamp(20px, 4vw, 38px); grid-template-columns: 1fr; }
@media (min-width: 940px) { .tool-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }

.field { margin-bottom: 17px; }
.field:last-child { margin-bottom: 0; }
.field-label {
  display: block; font-size: .74rem; font-weight: 600; color: var(--ink-3);
  margin-bottom: 7px; text-transform: uppercase; letter-spacing: .07em;
}
.field-hint { font-size: .82rem; color: var(--ink-3); margin-top: 6px; line-height: 1.45; }

input[type="text"], select:not(.lang-select) {
  width: 100%; padding: 11px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-2); background: var(--paper); color: var(--ink);
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}
input[type="text"]:focus, select:not(.lang-select):focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}
[data-panel] input + .field-label, [data-panel] select + .field-label { margin-top: 12px; }

.seg {
  display: inline-flex; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px; gap: 2px;
}
.seg-btn {
  padding: 7px 15px; border-radius: 999px; font-size: .88rem; font-weight: 500;
  color: var(--ink-2); transition: background .16s var(--ease), color .16s var(--ease);
}
.seg-btn.is-active { background: var(--accent); color: var(--accent-ink); }

.style-row, .format-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
@media (min-width: 500px) { .style-row { grid-template-columns: repeat(4, 1fr); } }
.style-btn {
  padding: 9px 6px; border-radius: var(--radius-sm); border: 1px solid var(--line-2);
  background: var(--surface); font-size: .86rem; font-weight: 500; color: var(--ink-2);
  transition: border-color .14s var(--ease), color .14s var(--ease), background .14s var(--ease);
}
.style-btn:hover { border-color: var(--accent); color: var(--ink); }
.style-btn.is-active { border-color: var(--accent); background: var(--accent-tint); color: var(--accent); font-weight: 600; }

.color-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px; }
.color-pick { display: inline-flex; flex-direction: column; align-items: center; gap: 6px; font-size: .76rem; color: var(--ink-2); }
.color-pick input[type="color"] {
  inline-size: 54px; block-size: 40px; padding: 3px; cursor: pointer;
  border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--surface);
}
.link-btn {
  font-size: .85rem; font-weight: 600; color: var(--accent);
  border: 1px dashed transparent; padding: 5px 7px; border-radius: 7px;
  transition: border-color .14s var(--ease), background .14s var(--ease);
}
.link-btn:hover { border-color: var(--accent); background: var(--accent-tint); }

.emoji-row { display: flex; flex-wrap: wrap; gap: 6px; }
.emoji-btn {
  inline-size: 40px; block-size: 40px; font-size: 1.18rem; line-height: 1;
  border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: var(--surface);
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color .14s var(--ease), transform .14s var(--ease), background .14s var(--ease);
}
.emoji-btn:hover { border-color: var(--accent); }
.emoji-btn.is-active { border-color: var(--accent); background: var(--accent-tint); transform: translateY(-1px); }
.center-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }

.preview-block { margin-bottom: 17px; }
.preview-block:last-child { margin-bottom: 0; }
.preview-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
  font-size: .74rem; font-weight: 600; color: var(--ink-3);
  margin-bottom: 8px; text-transform: uppercase; letter-spacing: .07em;
}
.preview-hint { font-weight: 500; text-transform: none; letter-spacing: 0; color: var(--ink-3); flex-shrink: 0; }

.qr2d {
  background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; display: grid; place-items: center; min-height: 220px;
}
.qr2d canvas, .qr2d svg { width: 100%; max-width: 250px; height: auto; border-radius: 6px; }

.qr3d {
  position: relative; background: var(--surface-2); border: 1px solid var(--line);
  border-radius: var(--radius); aspect-ratio: 4 / 3; overflow: hidden;
}
.qr3d canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; }
.qr3d-msg {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
  padding: 22px; font-size: .88rem; color: var(--ink-3); background: var(--surface-2);
}
.qr3d-msg.is-hidden { display: none; }

.format-row { margin-top: 12px; grid-template-columns: 1fr; }
@media (min-width: 500px) { .format-row { grid-template-columns: repeat(3, 1fr); } }
.fmt-btn {
  display: flex; flex-direction: column; gap: 2px; text-align: start;
  padding: 10px 12px; border-radius: var(--radius-sm); border: 1px solid var(--line-2);
  background: var(--surface); color: var(--ink-2);
  transition: border-color .14s var(--ease), background .14s var(--ease);
}
.fmt-btn strong { font-size: .88rem; color: var(--ink); font-weight: 600; }
.fmt-btn span { font-size: .76rem; color: var(--ink-3); }
.fmt-btn.is-active { border-color: var(--accent); background: var(--accent-tint); }
.fmt-btn.is-active strong { color: var(--accent); }

.obj-opts { margin-top: 14px; }
.obj-opts input[type="range"] { width: 100%; accent-color: var(--accent); }

.warnings { list-style: none; margin-top: 14px; display: grid; gap: 6px; }
.warnings li { font-size: .84rem; padding-left: 22px; position: relative; color: var(--ink-2); line-height: 1.45; }
.warnings li::before { content: "•"; position: absolute; left: 4px; color: var(--ink-3); font-weight: 700; }
.warnings li.w-ok { color: var(--ok); } .warnings li.w-ok::before { content: "✓"; color: var(--ok); }
.warnings li.w-warn { color: var(--warn); } .warnings li.w-warn::before { content: "!"; color: var(--warn); }
.warnings li.w-danger { color: var(--danger); } .warnings li.w-danger::before { content: "✕"; color: var(--danger); }

.download-bar {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px;
  padding-top: 20px; border-top: 1px solid var(--line);
}
.dl-btn {
  padding: 12px 18px; border-radius: var(--radius-sm); font-weight: 600; font-size: .94rem;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink);
  transition: transform .13s var(--ease), border-color .13s var(--ease), background .13s var(--ease);
}
.dl-btn:hover { transform: translateY(-1px); border-color: var(--accent); }
.dl-btn:active { transform: translateY(0); }
.dl-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.dl-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); flex: 1 1 240px; }
.dl-primary:hover { background: var(--accent-press); border-color: var(--accent-press); }
.dl-secondary { flex: 1 1 150px; }
.tool-nojs { display: none; margin-top: 14px; color: var(--danger); font-size: .9rem; font-weight: 500; }

.privacy-badge {
  max-width: 720px; margin: 20px auto 0; text-align: center;
  font-size: .88rem; color: var(--ink-2); line-height: 1.55;
}

/* -------------------------------------------------------------
   4b. Landing / hub de herramientas
   ------------------------------------------------------------- */
.hero-landing { padding-bottom: 4px; }
.hero-landing .wrap { max-width: 780px; }

.back-link {
  display: inline-flex; align-items: center; gap: 5px; margin-bottom: 14px;
  font-size: .84rem; font-weight: 600; color: var(--ink-3);
  transition: color .16s var(--ease);
}
.back-link:hover { color: var(--accent); }
[dir="rtl"] .back-link svg { transform: scaleX(-1); }

.chips { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 18px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); font-size: .82rem; font-weight: 500; color: var(--ink-2);
}
.chip span:first-child { font-size: .95rem; line-height: 1; }

.tools-hub { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .tools-hub { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .tools-hub { grid-template-columns: repeat(3, 1fr); } }

.tool-item {
  position: relative; display: flex; flex-direction: column;
  padding: 22px 20px 20px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: var(--surface); color: inherit;
  box-shadow: var(--shadow-sm);
}
.tool-item.is-ready {
  transition: transform .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.tool-item.is-ready:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.tool-item:not(.is-ready) { opacity: .72; }

.tool-ico {
  display: inline-flex; padding: 11px; border-radius: 13px;
  background: var(--accent-tint); color: var(--accent); margin-bottom: 14px; align-self: flex-start;
}
.tool-ico svg { width: 24px; height: 24px; }
.tool-item h3 { font-size: 1.08rem; margin-bottom: 7px; letter-spacing: -0.02em; }
.tool-item p { font-size: .9rem; color: var(--ink-2); line-height: 1.5; flex: 1 0 auto; }

.tool-cta {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 16px;
  font-size: .92rem; font-weight: 600; color: var(--accent);
}
[dir="rtl"] .tool-cta svg { transform: scaleX(-1); }
.tool-item.is-ready:hover .tool-cta svg { transform: translateX(3px); }
[dir="rtl"] .tool-item.is-ready:hover .tool-cta svg { transform: scaleX(-1) translateX(3px); }

.soon-pill {
  align-self: flex-start; margin-top: 16px;
  font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-3); background: var(--surface-2); border: 1px solid var(--line);
  padding: 4px 10px; border-radius: 999px;
}

.why { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .why { grid-template-columns: repeat(3, 1fr); } }
.why-item { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: var(--surface); }
.why-item h3 { font-size: 1.02rem; margin-bottom: 6px; }
.why-item p { font-size: .9rem; color: var(--ink-2); line-height: 1.55; }

.more-open {
  display: inline-flex; margin-top: 14px; font-size: .9rem; font-weight: 600; color: var(--accent);
}
.more-open::after { content: " →"; white-space: pre; }
[dir="rtl"] .more-open::after { content: " ←"; }

/* -------------------------------------------------------------
   4c. Herramienta: quitar fondo
   ------------------------------------------------------------- */
.bg-stage { min-height: 260px; }

.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; text-align: center; cursor: pointer;
  padding: clamp(28px, 7vw, 56px) 20px; border-radius: var(--radius);
  border: 2px dashed var(--line-2); background: var(--surface-2);
  transition: border-color .16s var(--ease), background .16s var(--ease);
}
.dropzone:hover, .dropzone.is-over { border-color: var(--accent); background: var(--accent-tint); }
.dz-ico { display: inline-flex; padding: 12px; border-radius: 14px; background: var(--accent-tint); color: var(--accent); }
.dz-ico svg { width: 26px; height: 26px; }
.dz-title { font-weight: 600; font-size: 1rem; }
.dz-hint { font-size: .85rem; color: var(--ink-3); }
#bg-tool[data-state="loading"] .dropzone,
#bg-tool[data-state="working"] .dropzone,
#bg-tool[data-state="done"] .dropzone,
#bg-tool[data-state="error"] .dropzone { display: none; }

.bg-progress { padding: 34px 20px; text-align: center; }
.bg-progress-label { font-size: .92rem; color: var(--ink-2); margin-bottom: 14px; }
.bg-progress-label.is-error { color: var(--danger); font-weight: 500; }
.bar { height: 8px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); overflow: hidden; max-width: 420px; margin: 0 auto; }
.bar span { display: block; height: 100%; width: 4%; background: var(--accent); border-radius: 999px; transition: width .3s var(--ease); }
.bar span.indeterminate { animation: bgIndet 1.15s ease-in-out infinite; }
@keyframes bgIndet { 0% { margin-left: -35%; } 100% { margin-left: 100%; } }
@media (prefers-reduced-motion: reduce) { .bar span.indeterminate { animation: none; width: 40% !important; } }

.bg-result { display: grid; gap: 16px; }
.bg-canvas-wrap {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: grid; place-items: center; padding: 12px; min-height: 180px;
  background-color: var(--surface-2);
  background-image:
    linear-gradient(45deg, var(--line) 25%, transparent 25%),
    linear-gradient(-45deg, var(--line) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--line) 75%),
    linear-gradient(-45deg, transparent 75%, var(--line) 75%);
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}
#bg-canvas { max-width: 100%; max-height: 460px; height: auto; width: auto; border-radius: 6px; }
.bg-controls .seg { margin-top: 4px; }
.bg-controls #bg-color { margin-left: 8px; inline-size: 44px; block-size: 34px; vertical-align: middle; border: 1px solid var(--line-2); border-radius: 8px; padding: 2px; cursor: pointer; }

/* -------------------------------------------------------------
   4d. Herramienta: comprimir imágenes
   ------------------------------------------------------------- */
.cmp-controls { display: grid; gap: 16px; margin-bottom: 18px; }
@media (min-width: 620px) { .cmp-controls { grid-template-columns: 1fr 1fr; } }
.cmp-ctl .seg { flex-wrap: wrap; }
.seg-btn.is-disabled { opacity: .4; cursor: not-allowed; }

#cmp-tool[data-state="working"] #cmp-drop,
#cmp-tool[data-state="done"] #cmp-drop,
#cmp-tool[data-state="error"] #cmp-drop { display: none; }

.cmp-list { list-style: none; display: grid; gap: 8px; margin-top: 4px; }
.cmp-row {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface);
}
.cmp-thumb { width: 44px; height: 44px; border-radius: 7px; object-fit: cover; background: var(--surface-2); flex-shrink: 0; border: 1px solid var(--line); }
.cmp-thumb-ph { display: inline-block; }
.cmp-meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.cmp-name { font-size: .88rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmp-sizes { font-size: .78rem; color: var(--ink-3); }
.cmp-tag { font-size: .78rem; color: var(--ink-3); flex-shrink: 0; }
.cmp-tag.w-warn { color: var(--warn); } .cmp-tag.w-danger { color: var(--danger); font-weight: 700; }
.cmp-saved { font-size: .82rem; font-weight: 700; color: var(--ink-3); flex-shrink: 0; }
.cmp-saved.ok { color: var(--ok); }
.cmp-dl {
  display: inline-grid; place-items: center; width: 32px; height: 32px; flex-shrink: 0;
  border-radius: 8px; border: 1px solid var(--line-2); color: var(--accent); font-weight: 700; font-size: 1rem;
  transition: border-color .14s var(--ease), background .14s var(--ease);
}
.cmp-dl:hover { border-color: var(--accent); background: var(--accent-tint); }
.cmp-total { margin-top: 14px; font-size: .92rem; font-weight: 600; color: var(--ink); text-align: center; }

/* -------------------------------------------------------------
   4e. Herramienta: paleta de colores / selector desde imagen
   ------------------------------------------------------------- */
#pal-tool > .seg { margin-bottom: 18px; }
.pal-pane[hidden] { display: none; }
.pal-controls { display: grid; gap: 16px; }
@media (min-width: 620px) { .pal-controls { grid-template-columns: 1fr 1fr; } }

.pal-base-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.pal-base-row input[type="color"] {
  inline-size: 52px; block-size: 40px; padding: 3px; cursor: pointer;
  border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--surface);
}
#pal-base-hex { width: 120px; text-transform: uppercase; letter-spacing: .04em; }

.pal-stage {
  position: relative; margin-top: 14px; padding: 10px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2);
  display: grid; place-items: center;
}
#pal-canvas {
  max-width: 100%; max-height: 440px; width: auto; height: auto;
  border-radius: 6px; cursor: crosshair; touch-action: none;
}
.pal-pickhint { margin-top: 8px; font-size: .82rem; color: var(--ink-3); text-align: center; }
#pal-count { width: 100%; accent-color: var(--accent); }

.pal-loupe {
  position: fixed; z-index: 80; width: 104px; height: 104px; border-radius: 50%;
  border: 3px solid var(--surface); box-shadow: var(--shadow-md), 0 0 0 1px var(--line-2);
  pointer-events: none; image-rendering: pixelated;
}

#pal-tool[data-state="ready"] #pal-drop { display: none; }

.pal-picked {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 13px 14px; margin: 18px 0 0;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
}
.pal-picked-chip {
  width: 54px; height: 54px; border-radius: 10px; flex-shrink: 0;
  border: 1px solid var(--line-2); background: var(--surface-2);
}
.pal-picked-vals { display: grid; gap: 2px; }
.pal-picked-vals button {
  text-align: start; font-size: .86rem; color: var(--ink-2); font-variant-numeric: tabular-nums;
  padding: 2px 6px; border-radius: 6px;
  transition: background .14s var(--ease), color .14s var(--ease);
}
.pal-picked-vals button:hover { background: var(--accent-tint); color: var(--accent); }
.pal-picked-vals button.copied { background: var(--accent-tint); color: var(--ok); }

.pal-out { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 460px) { .pal-out { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 720px) { .pal-out { grid-template-columns: repeat(5, 1fr); } }
.pal-sw {
  display: flex; flex-direction: column; overflow: hidden; text-align: center;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface);
  transition: transform .13s var(--ease), border-color .13s var(--ease);
}
.pal-sw:hover { transform: translateY(-2px); border-color: var(--accent); }
.pal-sw-color { height: 78px; width: 100%; }
.pal-sw-hex {
  padding: 7px 4px; font-size: .76rem; font-weight: 600; letter-spacing: .03em;
  color: var(--ink-2); font-variant-numeric: tabular-nums;
}
.pal-sw.copied .pal-sw-hex { color: var(--ok); }
.pal-sw.copied .pal-sw-hex::after { content: " ✓"; }

/* -------------------------------------------------------------
   4f. Herramienta: generador de contraseñas
   ------------------------------------------------------------- */
.pw-output { display: flex; flex-wrap: wrap; gap: 10px; align-items: stretch; }
.pw-out {
  flex: 1 1 240px; min-width: 0; display: flex; align-items: center;
  padding: 14px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-2); background: var(--paper);
  font-family: "Space Grotesk", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1rem, 3.4vw, 1.4rem); font-weight: 600; letter-spacing: .02em;
  word-break: break-all; line-height: 1.35; user-select: all;
}
.pw-output-actions { display: flex; gap: 8px; }
.pw-output-actions .dl-primary { flex: 0 0 auto; }
.pw-again { width: 46px; height: auto; align-self: stretch; }
.dl-btn.is-done { border-color: var(--ok); color: var(--ok); }

.pw-meter { height: 8px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); overflow: hidden; margin-top: 16px; }
.pw-meter span { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--accent); transition: width .3s var(--ease), background .3s var(--ease); }
.pw-meter span[data-tone="danger"] { background: var(--danger); }
.pw-meter span[data-tone="warn"] { background: var(--warn); }
.pw-meter span[data-tone="ok"] { background: var(--ok); }

.pw-readout { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; font-size: .84rem; }
.pw-strength { font-weight: 700; }
.pw-strength[data-tone="danger"] { color: var(--danger); }
.pw-strength[data-tone="warn"] { color: var(--warn); }
.pw-strength[data-tone="ok"] { color: var(--ok); }
.pw-entropy { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.pw-crack { margin-top: 4px; font-size: .82rem; color: var(--ink-3); }

.pw-modes { margin: 20px 0 16px; }
.pw-pane[hidden] { display: none; }
.pw-controls { display: grid; gap: 16px; }
@media (min-width: 560px) { .pw-controls { grid-template-columns: 1fr 1fr; } }
#pw-length, #pw-words { width: 100%; accent-color: var(--accent); }

.pw-checks { display: grid; gap: 10px; margin-top: 6px; }
@media (min-width: 560px) { .pw-checks { grid-template-columns: 1fr 1fr; } }
.pw-check { display: flex; align-items: flex-start; gap: 9px; font-size: .9rem; color: var(--ink-2); cursor: pointer; line-height: 1.4; }
.pw-check input { width: 17px; height: 17px; margin-top: 1px; accent-color: var(--accent); flex-shrink: 0; }

/* -------------------------------------------------------------
   4g. Herramienta: contador de palabras
   ------------------------------------------------------------- */
.wc-input {
  width: 100%; min-height: 220px; resize: vertical; padding: 14px 16px;
  border-radius: var(--radius-sm); border: 1px solid var(--line-2);
  background: var(--paper); color: var(--ink); font: inherit; line-height: 1.6;
}
.wc-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }
.wc-stats {
  display: grid; gap: 10px; margin-top: 16px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 520px) { .wc-stats { grid-template-columns: repeat(4, 1fr); } }
.wc-stat {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); padding: 12px 10px; text-align: center;
}
.wc-stat b { display: block; font-family: var(--display); font-size: 1.35rem; font-variant-numeric: tabular-nums; }
.wc-stat span { display: block; font-size: .74rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; margin-top: 2px; }
.wc-keywords { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; margin-top: 16px; }
.wc-kw-h { font-size: .74rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; margin-inline-end: 4px; }
.wc-kw { font-size: .82rem; padding: 4px 9px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2); }
.wc-kw b { color: var(--accent); }

/* -------------------------------------------------------------
   4h. Herramienta: código de barras
   ------------------------------------------------------------- */
.bc-grid { display: grid; gap: 20px; }
@media (min-width: 780px) { .bc-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; } }
.bc-preview {
  border: 1px solid var(--line); border-radius: var(--radius); background: #ffffff;
  min-height: 200px; display: grid; place-items: center; padding: 16px; overflow: auto;
}
:root[data-theme="dark"] .bc-preview { background: var(--surface-2); }
#bc-svg { max-width: 100%; height: auto; }
.bc-form .field { margin-bottom: 14px; }

/* -------------------------------------------------------------
   4i. Herramienta: PDF a texto
   ------------------------------------------------------------- */
.pt-out {
  width: 100%; min-height: 300px; resize: vertical; padding: 14px 16px; margin-top: 8px;
  border-radius: var(--radius-sm); border: 1px solid var(--line-2);
  background: var(--paper); color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86rem; line-height: 1.55;
}
.pt-out:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }
#pt-tool[data-state="working"] #pt-drop,
#pt-tool[data-state="done"] #pt-drop,
#pt-tool[data-state="error"] #pt-drop { display: none; }

/* -------------------------------------------------------------
   4j. Herramienta: firmar PDF
   ------------------------------------------------------------- */
#sg-tool[data-state="ready"] #sg-drop,
#sg-tool[data-state="working"] #sg-drop { display: none; }
.sg-work { display: grid; gap: 22px; }
@media (min-width: 900px) { .sg-work { grid-template-columns: 320px minmax(0, 1fr); align-items: start; } }
.sg-sign .seg { margin: 8px 0 12px; flex-wrap: wrap; }
.sg-pane { margin-top: 4px; }
.sg-pane[hidden] { display: none; }
#sg-pad {
  width: 100%; height: auto; aspect-ratio: 3 / 1; touch-action: none; cursor: crosshair;
  border: 1px dashed var(--line-2); border-radius: var(--radius-sm);
  background: var(--surface);
  background-image: linear-gradient(var(--line) 1px, transparent 1px);
  background-size: 100% 33.33%;
  background-position: 0 66%;
}
.sg-pane-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 6px; }
.sg-pane input[type="text"], .sg-pane select, .sg-pane input[type="file"] { width: 100%; }
.sg-pane input[type="file"] { font-size: .86rem; }
.sg-pages {
  display: grid; gap: 14px; max-height: 620px; overflow: auto; padding: 4px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2);
}
.sg-page { position: relative; align-self: center; box-shadow: var(--shadow-sm); line-height: 0; }
.sg-page canvas { width: 100%; height: auto; border-radius: 3px; }
.sg-stamp {
  position: absolute; transform: translate(-50%, -50%); cursor: grab;
  border: 1px dashed var(--accent); border-radius: 4px; touch-action: none;
}
.sg-stamp.is-drag { cursor: grabbing; opacity: .85; }
.sg-stamp img { width: 100%; height: 100%; display: block; pointer-events: none; }
.sg-stamp-x {
  position: absolute; top: -11px; inset-inline-end: -11px; width: 22px; height: 22px;
  border-radius: 50%; background: var(--danger); color: #fff; font-size: 15px; line-height: 22px;
  display: grid; place-items: center; box-shadow: var(--shadow-sm);
}

/* -------------------------------------------------------------
   5. Huecos de anuncio (placeholders)
   ------------------------------------------------------------- */
.ad-slot {
  display: flex; align-items: center; justify-content: center;
  border: 1px dashed var(--line-2); border-radius: var(--radius);
  color: var(--ink-3); background: var(--surface-2);
  font-size: .7rem; font-weight: 700; letter-spacing: .2em;
}
.ad-leaderboard { min-height: 96px; margin: 30px 0; }
.ad-incontent { min-height: 250px; margin: 10px 0 30px; }

.ad-toast {
  position: fixed; inset-inline-end: 14px; inset-block-end: 14px; z-index: 60;
  width: 238px; max-width: calc(100vw - 28px);
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius);
  box-shadow: var(--shadow-md); padding: 13px 13px 11px;
}
.ad-toast-tag { font-size: .64rem; font-weight: 700; letter-spacing: .2em; color: var(--ink-3); }
.ad-toast p { font-size: .85rem; color: var(--ink-2); margin-top: 4px; line-height: 1.4; }
.ad-toast-close {
  position: absolute; top: 4px; inset-inline-end: 6px; font-size: 1.2rem; line-height: 1;
  color: var(--ink-3); padding: 4px;
}
.ad-toast-close:hover { color: var(--ink); }
@media (max-width: 519px) { .ad-toast { width: 200px; } .ad-toast p { font-size: .8rem; } }

.ad-modal {
  border: 1px solid var(--line-2); border-radius: 18px; padding: 26px 22px 22px;
  max-width: 360px; width: calc(100vw - 40px); background: var(--surface); color: var(--ink);
  box-shadow: var(--shadow-md);
}
.ad-modal::backdrop { background: rgba(10, 10, 14, .55); }
.ad-modal-close { position: absolute; top: 8px; inset-inline-end: 12px; font-size: 1.5rem; line-height: 1; color: var(--ink-3); padding: 4px; }
.ad-modal-close:hover { color: var(--ink); }
.ad-modal-title { font-weight: 700; font-family: var(--display); margin-bottom: 14px; }
.ad-modal-slot { min-height: 250px; margin-bottom: 16px; }
.ad-modal [data-ad-modal-continue] { width: 100%; }

/* -------------------------------------------------------------
   6. Secciones de contenido
   ------------------------------------------------------------- */
.section { padding: clamp(32px, 6vw, 58px) 0 0; }
.section > .wrap > h2, .section > h2 { font-size: clamp(1.4rem, 3vw, 1.95rem); margin-bottom: 22px; }
.prose { max-width: 720px; }
.prose h2 { margin-bottom: 16px; }
.prose p { margin-bottom: 14px; color: var(--ink-2); }
.prose strong { color: var(--ink); font-weight: 600; }

.steps { list-style: none; display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.step-ico { display: inline-flex; padding: 10px; border-radius: 11px; background: var(--accent-tint); color: var(--accent); margin-bottom: 12px; }
.step-ico svg { width: 22px; height: 22px; }
.steps h3 { font-size: 1.02rem; margin-bottom: 6px; }
.steps p { font-size: .9rem; color: var(--ink-2); }

.ideas { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .ideas { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 940px) { .ideas { grid-template-columns: repeat(3, 1fr); } }
.idea { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--surface); }
.idea h3 { font-size: .98rem; margin-bottom: 6px; }
.idea p { font-size: .89rem; color: var(--ink-2); }

.faq { max-width: 800px; display: grid; gap: 9px; }
.faq details { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.faq summary { padding: 15px 18px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 700; flex-shrink: 0; }
.faq details[open] summary::after { content: "\2013"; }
.faq details p { padding: 0 18px 16px; color: var(--ink-2); font-size: .92rem; line-height: 1.6; }
[dir="rtl"] .faq details p { padding: 0 18px 16px; }

.more-tools { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .more-tools { grid-template-columns: repeat(3, 1fr); } }
.more-tool { position: relative; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--surface); }
.more-tool h3 { font-size: .98rem; margin-bottom: 6px; padding-inline-end: 60px; }
.more-tool p { font-size: .87rem; color: var(--ink-2); }
.soon {
  position: absolute; top: 14px; inset-inline-end: 14px;
  font-size: .66rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-tint); padding: 3px 8px; border-radius: 999px;
}

/* -------------------------------------------------------------
   7. Pie
   ------------------------------------------------------------- */
.site-footer { margin-top: 60px; border-top: 1px solid var(--line); background: var(--surface-2); }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between;
  align-items: center; padding-block: 22px; font-size: .87rem; color: var(--ink-2);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-links a:hover { color: var(--accent); }

/* -------------------------------------------------------------
   8. Páginas legales
   ------------------------------------------------------------- */
.legal { max-width: 720px; margin-inline: auto; padding: 40px 20px 20px; }
.legal h1 { font-size: clamp(1.55rem, 3.4vw, 2.15rem); margin-bottom: 18px; }
.legal h2 { font-size: 1.12rem; margin: 26px 0 8px; }
.legal p, .legal li { color: var(--ink-2); font-size: .95rem; margin-bottom: 10px; }
.legal ul { padding-inline-start: 22px; }
.legal .todo { background: var(--accent-tint); border-inline-start: 3px solid var(--accent); padding: 10px 14px; border-radius: 8px; font-size: .88rem; color: var(--ink); }
.contact-form { display: block; margin-top: 8px; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 11px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-2); background: var(--paper); color: var(--ink);
  font: inherit; resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }

/* -------------------------------------------------------------
   9. Movimiento reducido
   ------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* Sin efectos intrusivos que desactivar: los micro-hover son feedback, se mantienen. */
}