:root {
  --papel: #f7f4ec;
  --hoja: #fffdf7;
  --tinta: #1f2a24;
  --suave: #5d6b63;
  --linea: #e2ddd0;
  --lapiz: #f5c400;
  --lapiz-oscuro: #c99f00;
  --radio: 16px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--papel);
  color: var(--tinta);
  font: 17px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}
/* que se sienta app: sin menu de "guardar imagen" al dejar el dedo, sin seleccionar texto de botones */
img, button, .boton { -webkit-touch-callout: none; }
button, .boton, .muestras, .segmentos, .colores, .controles { -webkit-user-select: none; user-select: none; }
[hidden] { display: none !important; }
h1, h2 { line-height: 1.15; letter-spacing: -0.01em; }
.ico { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.vista { max-width: 560px; margin: 0 auto; padding: 0 16px 40px; }

/* inicio */
.cabecera { display: flex; align-items: center; gap: 10px; padding: 18px 0 8px; }
.cabecera img { border-radius: 10px; }
.marca { font-weight: 800; font-size: 1.15rem; }
.portada h1 { font-size: clamp(1.9rem, 7.5vw, 2.6rem); margin: 18px 0 12px; }
.entrada { color: var(--suave); margin: 0 0 22px; }
.nota { color: var(--suave); font-size: .92rem; margin: 12px 0 0; }
.bloque { margin-top: 38px; }
.bloque h2 { font-size: 1.3rem; margin: 0 0 14px; }

.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 22px; border-radius: 999px;
  border: 2px solid var(--tinta); background: var(--hoja); color: var(--tinta);
  font: inherit; font-weight: 700; cursor: pointer; text-decoration: none;
  touch-action: manipulation;
}
.boton:active { transform: translateY(1px); }
.boton-principal { background: var(--lapiz); border-color: var(--lapiz); width: 100%; font-size: 1.08rem; }
.boton-principal:active { background: var(--lapiz-oscuro); }
.boton:focus-visible, .redondo:focus-visible, .segmentos button:focus-visible { outline: 3px solid #2b7cff; outline-offset: 2px; }

.muestras { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.muestras button {
  min-width: 0; border: 1.5px solid var(--linea); border-radius: 14px; background: var(--hoja);
  padding: 10px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px;
  font: inherit; font-size: .85rem; color: var(--suave);
}
.muestras img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; }
.muestras button:active { border-color: var(--tinta); }

.pasos { margin: 0; padding: 0; list-style: none; counter-reset: paso; }
.pasos li { counter-increment: paso; position: relative; padding: 0 0 16px 46px; }
.pasos li::before {
  content: counter(paso); position: absolute; left: 0; top: -2px; width: 32px; height: 32px; border-radius: 50%;
  background: var(--tinta); color: var(--lapiz); font-weight: 800; display: grid; place-items: center;
}

.acciones-app { display: flex; flex-wrap: wrap; gap: 10px; }
.acciones-app .boton { flex: 1 1 200px; }
.acciones-app .nota { flex-basis: 100%; }

.credito {
  margin-top: 44px; padding: 20px; border-radius: var(--radio);
  background: var(--tinta); color: #e9efe9;
}
.credito p { margin: 0 0 14px; }
.boton-credito { width: 100%; background: transparent; color: var(--lapiz); border-color: var(--lapiz); }

.seguir {
  display: grid; grid-template-columns: 72px 1fr; gap: 12px 14px; align-items: center;
  margin: 10px 0 4px; padding: 14px; border-radius: var(--radio); background: var(--hoja); border: 1.5px solid var(--lapiz);
}
.seguir img { width: 72px; height: 72px; object-fit: contain; background: #fff; border-radius: 10px; border: 1px solid var(--linea); }
.seguir-texto { display: grid; }
.seguir-texto span { color: var(--suave); font-size: .9rem; }
.seguir .boton { grid-column: 1 / -1; }

.categorias { display: flex; gap: 8px; overflow-x: auto; margin: 0 -16px 10px; padding: 2px 16px 6px; scrollbar-width: none; }
.categorias::-webkit-scrollbar { display: none; }
.categorias button {
  flex: none; min-height: 40px; padding: 0 16px; border-radius: 999px; border: 1.5px solid var(--linea);
  background: var(--hoja); font: inherit; font-weight: 700; font-size: .95rem; color: var(--suave); cursor: pointer;
}
.categorias button[aria-pressed="true"] { background: var(--tinta); border-color: var(--tinta); color: var(--lapiz); }
.explica-categoria { margin: 0 0 12px; }
.publicos { display: grid; gap: 10px; }
.publico {
  display: grid; gap: 2px; padding: 14px 16px; border-radius: 14px; background: var(--hoja); border: 1.5px solid var(--linea);
  color: var(--tinta); text-decoration: none;
}
.publico span { color: var(--suave); font-size: .92rem; }
.publico:active { border-color: var(--tinta); }

/* preparar */
.barra { display: flex; align-items: center; gap: 10px; padding: 12px 0; }
.barra-titulo { font-weight: 800; }
.redondo {
  width: 46px; height: 46px; border-radius: 50%; border: 0; display: grid; place-items: center;
  background: rgba(31, 42, 36, .08); color: inherit; cursor: pointer; flex: none; touch-action: manipulation;
}
.hoja {
  background: var(--hoja); border: 1px solid var(--linea); border-radius: var(--radio);
  padding: 12px; display: grid; place-items: center; min-height: 240px;
  box-shadow: 0 1px 0 var(--linea), 0 8px 24px rgba(31, 42, 36, .06);
}
.hoja canvas { max-width: 100%; max-height: 52vh; height: auto; display: block; }
.ajustes { margin-top: 16px; display: grid; gap: 14px; }
.segmentos { display: grid; grid-template-columns: 1fr 1fr; background: rgba(31, 42, 36, .08); border-radius: 999px; padding: 4px; }
.segmentos { grid-auto-flow: column; grid-auto-columns: 1fr; grid-template-columns: none; }
.segmentos button { border: 0; background: transparent; border-radius: 999px; min-height: 44px; font: inherit; font-weight: 700; color: var(--suave); cursor: pointer; }
.segmentos button[aria-checked="true"] { background: var(--hoja); color: var(--tinta); box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }
.deslizador { display: grid; gap: 4px; font-weight: 700; }
.deslizador span { display: flex; justify-content: space-between; }
.deslizador small { font-weight: 400; color: var(--suave); }
input[type="range"] { width: 100%; height: 32px; accent-color: var(--tinta); }
.colores { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.colores span { margin-right: auto; }
.colores button {
  width: 36px; height: 36px; border-radius: 50%; border: 3px solid var(--hoja); background: var(--c);
  box-shadow: 0 0 0 1.5px var(--linea); cursor: pointer;
}
.colores button[aria-checked="true"] { box-shadow: 0 0 0 3px var(--tinta); }
.pista-color { margin: -6px 0 0; }
.explica-modo { margin: -4px 0 0; }
.fila-cuadricula { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.fila-cuadricula > span { flex: none; }
.segmentos.chicos { flex: 1; }
.segmentos.chicos button { min-height: 38px; font-size: .95rem; }
.segmentos button { padding: 0 4px; font-size: .95rem; }
.botonera { display: grid; gap: 10px; margin-top: 22px; }
.botonera .boton { width: 100%; }

/* calcar */
.vista-calcar {
  position: fixed; inset: 0; max-width: none; padding: 0; overflow: hidden;
  background: #000; touch-action: none; user-select: none; -webkit-user-select: none;
}
.vista-calcar.en-pantalla { background: #fff; }
#video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.en-pantalla #video { display: none; }
.escena { position: absolute; inset: 0; }
#calco {
  position: absolute; left: 50%; top: 50%; width: min(86vw, 86vh); height: auto;
  transform-origin: center; pointer-events: none; will-change: transform;
}
.controles {
  position: absolute; inset: 0; pointer-events: none; display: flex; flex-direction: column; justify-content: space-between;
  padding: calc(12px + env(safe-area-inset-top)) 16px calc(16px + env(safe-area-inset-bottom));
  color: #fff; transition: opacity .25s;
}
.controles > * { pointer-events: auto; }
.controles .redondo { background: rgba(0, 0, 0, .5); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.controles .redondo[aria-pressed="true"] { background: var(--lapiz); color: var(--tinta); }
.fila-arriba, .fila-abajo { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; }
.fila-arriba { align-items: center; }
.grupo { display: flex; gap: 10px; }
.deslizador.oscuro {
  flex: 1; background: rgba(0, 0, 0, .5); padding: 8px 16px 4px; border-radius: 18px; font-size: .9rem;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.deslizador.oscuro input { accent-color: var(--lapiz); }
.redondo.grande { width: 60px; height: 60px; }
.redondo.grande .ico { width: 28px; height: 28px; }
/* fijado: solo queda el candado, casi invisible */
.bloqueado .fila-arriba, .bloqueado .deslizador { opacity: 0; pointer-events: none; }
.bloqueado .fila-abajo { justify-content: flex-end; }
.bloqueado #candado { opacity: .55; }
.en-pantalla .controles { color: var(--tinta); }
.en-pantalla .controles .redondo:not([aria-pressed="true"]), .en-pantalla .deslizador.oscuro { background: rgba(31, 42, 36, .1); color: var(--tinta); }

.aviso {
  position: absolute; left: 16px; right: 16px; top: calc(76px + env(safe-area-inset-top)); margin: 0 auto; max-width: 420px;
  background: rgba(0, 0, 0, .72); color: #fff; padding: 12px 16px; border-radius: 14px; text-align: center;
  font-size: .95rem; pointer-events: none;
}
.reloj {
  position: absolute; left: 50%; top: calc(18px + env(safe-area-inset-top)); transform: translateX(-50%); margin: 0;
  background: #ff3b30; color: #fff; font-weight: 700; padding: 6px 14px; border-radius: 999px; font-size: .9rem;
  font-variant-numeric: tabular-nums; pointer-events: none; white-space: nowrap;
}
.reloj::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #fff; margin-right: 8px; vertical-align: 1px; animation: latido 1s infinite; }
@keyframes latido { 50% { opacity: .2; } }
.grabando .fila-arriba { opacity: 0; pointer-events: none; }
#grabar[aria-pressed="true"] { background: #fff; }
.resultado {
  position: absolute; inset: 0; background: #111; display: flex; flex-direction: column;
  padding: calc(12px + env(safe-area-inset-top)) 16px calc(16px + env(safe-area-inset-bottom)); gap: 14px;
}
.resultado video { flex: 1; min-height: 0; width: 100%; object-fit: contain; border-radius: 12px; background: #000; }
.resultado-panel { display: grid; gap: 10px; max-width: 460px; width: 100%; margin: 0 auto; color: #e9efe9; }
.resultado-panel p { margin: 0 0 4px; font-size: .95rem; }
.resultado-panel .boton { width: 100%; }
.boton-texto { background: transparent; border-color: transparent; color: #e9efe9; }
.problema {
  position: absolute; inset: 0; background: var(--papel); color: var(--tinta);
  display: flex; flex-direction: column; justify-content: center; gap: 12px; padding: 24px; text-align: center;
}
.problema p { max-width: 420px; margin: 0 auto 10px; }
.problema .boton { width: 100%; max-width: 420px; margin: 0 auto; }

@media (min-width: 700px) {
  .muestras { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .vista:not(.vista-calcar) { padding-top: 20px; }
}

/* paginas por publico (estudiantes, artistas, tatuadores) */
.cabecera-enlace { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.cabecera-enlace img { border-radius: 10px; }
.pagina-publico .portada .boton-principal { margin-top: 4px; }
.muestras a {
  display: block; border: 1.5px solid var(--linea); border-radius: 14px; background: var(--hoja); padding: 10px;
}
.muestras a img { display: block; width: 100%; height: auto; aspect-ratio: 1; }
.puntos { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.puntos li { padding-left: 22px; position: relative; }
.puntos li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 10px; height: 10px; border-radius: 50%; background: var(--lapiz); box-shadow: 0 0 0 2px var(--tinta); }
.consejo { margin: 18px 0 0; padding: 14px 16px; border-left: 4px solid var(--lapiz); background: var(--hoja); border-radius: 0 12px 12px 0; }
.pagina-publico .botonera .boton { width: 100%; }

/* contador de personas, como los de antes */
.contador { margin: 22px auto 0; display: grid; justify-items: center; gap: 6px; text-align: center; color: var(--suave); font-size: .82rem; }
.contador-digitos { display: inline-flex; gap: 2px; padding: 3px; background: #111; border-radius: 4px; box-shadow: inset 0 0 0 1px #333, 0 1px 0 rgba(0,0,0,.15); }
.contador-digitos span {
  width: 14px; height: 20px; display: grid; place-items: center; border-radius: 2px;
  background: linear-gradient(#262626, #0b0b0b 50%, #1a1a1a 50%, #0b0b0b);
  color: #ffb000; text-shadow: 0 0 4px rgba(255, 176, 0, .65);
  font: 700 14px/1 ui-monospace, "Courier New", monospace; font-variant-numeric: tabular-nums;
}
.contador-tuyo { font-size: .76rem; }