/* ============================================================
   Generador de QR — hoja de estilos
   Editá los colores acá abajo para cambiar la marca del sitio.
   ============================================================ */

:root {
  --ink:        #101216;
  --ink-soft:   #3C4048;
  --muted:      #6C7168;
  --paper:      #E6E8E1;
  --surface:    #FCFCFA;
  --hairline:   #C9CCC2;
  --accent:     #3B2BFF;
  --accent-ink: #FFFFFF;
  --ok:         #1F7A3D;
  --warn:       #A8410F;

  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 18px;

  --gutter: clamp(20px, 4vw, 56px);
  --maxw: 1180px;

  --f-display: "Bricolage Grotesque", "Inter Tight", system-ui, sans-serif;
  --f-body:    "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Trama de módulos de fondo — guiño al propio código QR */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(var(--hairline) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: .5;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

a { color: var(--accent); }

/* ---------- Cabecera ---------- */

.top {
  position: relative;
  z-index: 3;
  border-bottom: 1px solid var(--hairline);
  background: #EDEEE9;
  background: color-mix(in srgb, var(--paper) 88%, white);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
}

.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 26px;
  height: 26px;
  flex: none;
}

.top nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
}

.top nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

.top nav a:hover { color: var(--accent); }

@media (max-width: 640px) {
  .top nav { display: none; }
}

/* ---------- Encabezado de página ---------- */

.masthead {
  padding: clamp(34px, 6vw, 62px) 0 26px;
  max-width: 760px;
}

.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

h1 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(34px, 6.4vw, 60px);
  line-height: 1.02;
  letter-spacing: -.035em;
  margin: 0 0 16px;
}

h1 em {
  font-style: normal;
  color: var(--accent);
}

.lede {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--ink-soft);
  margin: 0;
  max-width: 60ch;
}

/* ---------- Zona del generador ---------- */

.studio {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 372px;
  gap: 28px;
  align-items: start;
  padding-bottom: 56px;
}

@media (max-width: 940px) {
  .studio { grid-template-columns: minmax(0, 1fr); }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: clamp(18px, 3vw, 26px);
}

/* Pestañas de tipo de QR */

.types {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.type-btn {
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}

.type-btn:hover { border-color: var(--ink); color: var(--ink); }

.type-btn[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--surface);
}

/* Campos */

.fields { display: grid; gap: 16px; }

.field { display: grid; gap: 6px; }

.field.row2 {
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 520px) {
  .field.row2 { grid-template-columns: 1fr; }
}

label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
}

.hint {
  font-size: 12.5px;
  color: var(--muted);
}

input[type="text"],
input[type="url"],
input[type="tel"],
input[type="email"],
input[type="number"],
input[type="password"],
select,
textarea {
  font: inherit;
  font-size: 15px;
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: #fff;
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}

textarea { resize: vertical; min-height: 108px; line-height: 1.5; }

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

/* Bloque de apariencia */

.appearance {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
}

.appearance h2 {
  font-family: var(--f-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
  margin: 0 0 16px;
}

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

@media (max-width: 640px) {
  .grid3 { grid-template-columns: 1fr 1fr; }
}

.swatches { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 4px; }

.swatch {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  cursor: pointer;
  padding: 0;
}

input[type="color"] {
  width: 100%;
  height: 42px;
  padding: 3px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: #fff;
  cursor: pointer;
}

.check {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
}

.check input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }

.file-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ---------- Placa de vista previa ---------- */

.preview-col { position: sticky; top: 88px; display: grid; gap: 14px; }

@media (max-width: 940px) {
  .preview-col { position: static; }
}

.plate {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 26px;
  position: relative;
}

/* Marcas de posición: el mismo patrón que tiene un QR en sus esquinas */
.plate::before,
.plate::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  border: 2px solid var(--ink);
  opacity: .28;
}
.plate::before { top: 12px;  left: 12px;  border-right: 0; border-bottom: 0; }
.plate::after  { top: 12px;  right: 12px; border-left: 0;  border-bottom: 0; }

.plate .corner-b,
.plate .corner-c {
  position: absolute;
  bottom: 12px;
  width: 15px;
  height: 15px;
  border: 2px solid var(--ink);
  opacity: .28;
}
.plate .corner-b { left: 12px;  border-right: 0; border-top: 0; }
.plate .corner-c { right: 12px; border-left: 0;  border-top: 0; }

.stage {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: var(--r-md);
}

.stage svg { width: 100%; height: 100%; display: block; }

/* Barrido de escaneo: se dispara una vez al regenerar */
.scanline {
  position: absolute;
  left: 0; right: 0;
  height: 32%;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(180deg,
    transparent,
    color-mix(in srgb, var(--accent) 22%, transparent),
    transparent);
}

.stage.scanning .scanline { animation: sweep .62s ease-out 1; }

@keyframes sweep {
  0%   { transform: translateY(-120%); opacity: 0; }
  22%  { opacity: 1; }
  100% { transform: translateY(340%); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .stage.scanning .scanline { animation: none; }
  html { scroll-behavior: auto; }
}

.empty-state {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 0 18px;
}

.readout {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  border-top: 1px dashed var(--hairline);
  padding-top: 12px;
}

.alert {
  font-size: 13.5px;
  padding: 10px 12px;
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--warn) 10%, var(--surface));
  color: var(--warn);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
}

.alert[hidden] { display: none; }

/* Botones */

.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.btn {
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--surface);
  cursor: pointer;
  text-align: center;
  transition: transform .12s, background .15s, opacity .15s;
}

.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn:active { transform: translateY(1px); }

.btn.ghost {
  background: transparent;
  color: var(--ink);
}

.btn.ghost:hover { background: var(--ink); color: var(--surface); }

.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn:disabled:hover { background: var(--ink); border-color: var(--ink); }
.btn.ghost:disabled:hover { background: transparent; color: var(--ink); }

/* ---------- Espacios publicitarios ---------- */

.ad {
  margin: 0 auto 48px;
  min-height: 96px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--hairline);
  border-radius: var(--r-md);
  color: var(--muted);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  overflow: hidden;
}

/* ---------- Contenido editorial ---------- */

.editorial { padding-bottom: 20px; }

.editorial section { margin-bottom: 52px; }

.editorial h2 {
  font-family: var(--f-display);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  letter-spacing: -.025em;
  margin: 0 0 16px;
}

.editorial h3 {
  font-family: var(--f-display);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
}

.editorial p { max-width: 72ch; color: var(--ink-soft); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 20px;
}

.card p { font-size: 14.5px; margin: 0; }

.faq details {
  border-bottom: 1px solid var(--hairline);
  padding: 16px 0;
}

.faq summary {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 17px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  font-family: var(--f-mono);
  font-size: 20px;
  color: var(--accent);
  flex: none;
}

.faq details[open] summary::after { content: "–"; }

.faq p { margin: 12px 0 0; font-size: 15px; }

/* ---------- Páginas de texto ---------- */

.doc { max-width: 74ch; padding: 40px 0 60px; }
.doc h2 { font-family: var(--f-display); font-size: 22px; margin: 34px 0 10px; letter-spacing: -.02em; }
.doc p, .doc li { color: var(--ink-soft); }
.doc ul { padding-left: 20px; }

/* ---------- Pie ---------- */

.foot {
  border-top: 1px solid var(--hairline);
  padding: 30px 0;
  font-size: 13.5px;
  color: var(--muted);
}

.foot .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--accent); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Utilidades ---------- */

.mt-14 { margin-top: 14px; }
.mt-16 { margin-top: 16px; }
.center { text-align: center; }

.file-input { font-size: 12px; }

.btn-xs { padding: 6px 12px; font-size: 13px; }

.doc-title {
  font-family: var(--f-display);
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.08;
  margin: 0 0 18px;
}

.card-contact { margin: 26px 0; max-width: 420px; }

.mono-line { font-family: var(--f-mono); font-size: 15px; }

/* Los espacios publicitarios no se ven hasta que AdSense carga un aviso */
.ad:empty { display: none; }