/* Diseño pensado para personas mayores: letra grande, botones grandes con texto y alto contraste. */

:root {
  --bg: #f6f4f0;
  --surface: #ffffff;
  --surface-2: #ebe7e0;
  --text: #15191e;
  --muted: #3f454c;
  --border: #b9b3a9;
  --accent: #b5441c;
  --accent-text: #ffffff;
  --accent-soft: #fbe7dd;
  --ok: #1d6b35;
  --warn-bg: #fff1c9;
  --warn-text: #4d3600;
  --danger: #a3221b;
  --stage: #2b2d31;
  --radius: 14px;
  --focus: #1a5fd0;
  color-scheme: light;
  font-size: 18px;
}
:root[data-font="large"] { font-size: 20px; }
:root[data-font="xlarge"] { font-size: 23px; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121416;
    --surface: #1c1f23;
    --surface-2: #2b3036;
    --text: #f4f2ee;
    --muted: #d0d3d7;
    --border: #59606a;
    --accent: #f08a5d;
    --accent-text: #160d08;
    --accent-soft: #3d2519;
    --ok: #7fd897;
    --warn-bg: #3d3112;
    --warn-text: #ffe39c;
    --danger: #ff9b93;
    --stage: #0c0d0f;
    --focus: #8ab4ff;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121416;
  --surface: #1c1f23;
  --surface-2: #2b3036;
  --text: #f4f2ee;
  --muted: #d0d3d7;
  --border: #59606a;
  --accent: #f08a5d;
  --accent-text: #160d08;
  --accent-soft: #3d2519;
  --ok: #7fd897;
  --warn-bg: #3d3112;
  --warn-text: #ffe39c;
  --danger: #ff9b93;
  --stage: #0c0d0f;
  --focus: #8ab4ff;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
.invisible { visibility: hidden; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior: none;
}

button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

svg { width: 1.4em; height: 1.4em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.app {
  height: 100dvh;
  max-width: 100vw;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  grid-template-areas: "top" "progress" "stage" "panel" "nav";
}

/* Barra superior */
.topbar {
  grid-area: top;
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: calc(.35rem + env(safe-area-inset-top)) max(.6rem, env(safe-area-inset-right)) .35rem max(.75rem, env(safe-area-inset-left));
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; font-size: 1.05rem; min-width: 0; white-space: nowrap; }
.brand img { border-radius: 8px; }
.top-actions { display: flex; gap: .25rem; flex: none; }
.text-btn {
  display: inline-flex; align-items: center; gap: .35rem;
  min-height: 48px; padding: .3rem .6rem;
  border: 0; border-radius: 10px; background: transparent; cursor: pointer;
  font-weight: 600; color: var(--text);
}
.text-btn:hover { background: var(--surface-2); }
.text-btn.link { padding-left: 0; padding-right: 0; color: var(--accent); text-decoration: underline; text-underline-offset: .2em; text-align: left; }
.text-btn.link:hover { background: transparent; }

/* Progreso */
.progress {
  grid-area: progress;
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  padding: .45rem max(.9rem, env(safe-area-inset-left));
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.progress-step { color: var(--muted); font-size: .9rem; }
.progress-title { font-size: 1rem; }
.dots { display: flex; gap: .35rem; list-style: none; margin: 0 0 0 auto; padding: 0; }
.dots li { width: .7rem; height: .7rem; border-radius: 50%; border: 2px solid var(--muted); }
.dots li.done { background: var(--muted); }
.dots li.now { background: var(--accent); border-color: var(--accent); transform: scale(1.25); }

/* Foto */
.stage {
  grid-area: stage;
  position: relative;
  background: var(--stage);
  overflow: hidden;
  min-height: 30dvh;
}
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; display: block; }
.empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .5rem;
  color: #d9d6d0; text-align: center; padding: 1rem;
}
.empty[hidden] { display: none; }
.empty svg { width: 4.5rem; height: 4.5rem; stroke-width: 1.5; opacity: .8; }
.empty p { margin: 0; font-size: 1.05rem; }

/* Panel del paso */
.panel {
  grid-area: panel;
  background: var(--surface);
  border-top: 1px solid var(--border);
  max-height: 52dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: .4rem max(1rem, env(safe-area-inset-right)) 1rem max(1rem, env(safe-area-inset-left));
}
.step { display: none; }
.step.active { display: block; }

h1 { font-size: 1.35rem; line-height: 1.25; margin: .5rem 0 .4rem; }
h2 { font-size: 1.05rem; margin: 1.1rem 0 .5rem; }
h3 { font-size: 1.05rem; margin: 1.2rem 0 .5rem; }
.help { color: var(--muted); margin: .4rem 0 .8rem; }
.ok-msg { color: var(--ok); font-weight: 600; margin: .6rem 0; }
.ok-msg[hidden] { display: none; }

.howto ol { margin: 0; padding-left: 1.6rem; }
.howto li { margin: .3rem 0; }

.card { border: 2px solid var(--border); border-radius: var(--radius); padding: .8rem 1rem; margin: 1rem 0; background: var(--bg); }
.card p { margin: 0 0 .7rem; }
.card[hidden] { display: none; }

/* Botones */
.btn {
  min-width: 0; overflow-wrap: break-word;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 52px; padding: .5rem 1rem;
  border: 2px solid var(--border); border-radius: var(--radius);
  background: var(--surface-2); color: var(--text);
  cursor: pointer; font-weight: 650; text-align: center;
}
.btn.big { min-height: 60px; font-size: 1.05rem; }
.btn.tall { min-height: 76px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); background: transparent; border-color: var(--danger); }
.btn.wide { width: 100%; margin: .4rem 0; }
.btn:disabled { opacity: .4; cursor: default; }
.btn small { display: block; font-weight: 400; font-size: .85rem; opacity: .95; }
.btn.toggle[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }

.row { display: flex; flex-wrap: wrap; gap: .6rem; }
.row.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }

/* Opciones grandes (botones de elección) */
.choices { display: grid; gap: .6rem; margin: .5rem 0; }
.choices.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.choices.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.choices.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.choice {
  min-width: 0; overflow-wrap: break-word;
  display: flex; align-items: center; justify-content: center; gap: .45rem;
  min-height: 56px; padding: .45rem .6rem;
  border: 2px solid var(--border); border-radius: var(--radius);
  background: var(--bg); cursor: pointer; font-weight: 600; text-align: center;
}
.choice[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.choice[aria-pressed="true"]::before { content: "✓"; font-weight: 800; }
/* Paso 2: ancho, alto y formato en una sola fila */
.row.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; align-items: end; }
.row.three .field { margin: .5rem 0; }
.row.three input { text-align: center; font-variant-numeric: tabular-nums; padding: .5rem .3rem; }
.row.three input::placeholder { font-size: .9rem; }
.with-unit { position: relative; display: block; }
.row.three .with-unit input { padding-right: 2.1rem; }
.with-unit .unit { position: absolute; right: .55rem; top: 50%; transform: translateY(-50%); font-size: .85rem; color: var(--muted); pointer-events: none; }

.field { display: flex; flex-direction: column; gap: .35rem; margin: .8rem 0; }
.field > span { font-weight: 600; }
.step-label { font-weight: 600; margin: .6rem 0 0; }
input[type="text"], select {
  width: 100%; min-height: 56px; padding: .5rem .8rem;
  border: 2px solid var(--border); border-radius: 12px;
  background: var(--bg); font-size: 1.1rem;
}
input[type="text"]:focus, select:focus { border-color: var(--accent); outline: none; }

.check { display: flex; align-items: center; gap: .8rem; min-height: 56px; cursor: pointer; font-weight: 600; }
.check input { width: 1.6rem; height: 1.6rem; accent-color: var(--accent); flex: none; }

/* Resultado de la cuadrícula y avisos */
.result { font-size: 1.1rem; font-weight: 700; margin: .8rem 0 .3rem; }
.result p { margin: .2rem 0; }
.result .sub { font-weight: 500; font-size: 1rem; color: var(--muted); }
.warn:empty { display: none; }
.warn { background: var(--warn-bg); color: var(--warn-text); border-radius: 12px; padding: .7rem .9rem; margin: .6rem 0; }
.warn p { margin: .2rem 0; }
.warn .choices { margin-top: .5rem; }
.warn .choice { background: var(--surface); color: var(--text); }

.quality { display: flex; gap: .5rem; align-items: flex-start; margin: .8rem 0; font-weight: 600; }
.quality.good { color: var(--ok); }
.quality.ok, .quality.low { background: var(--warn-bg); color: var(--warn-text); border-radius: 12px; padding: .6rem .8rem; }

/* Más opciones */
details.more { margin: 1rem 0 .3rem; border-top: 1px solid var(--border); }
details.more > summary {
  display: flex; align-items: center; gap: .5rem;
  min-height: 56px; cursor: pointer; font-weight: 700; list-style: none;
}
details.more > summary::-webkit-details-marker { display: none; }
details.more > summary::before { content: "▸"; font-size: 1.2em; transition: transform .15s; }
details.more[open] > summary::before { transform: rotate(90deg); }

/* Colores */
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr)); gap: .5rem; }
.swatch {
  position: relative; display: flex; align-items: center; gap: .5rem;
  min-height: 52px; padding: .3rem .6rem;
  border: 2px solid var(--border); border-radius: 12px; background: var(--bg); cursor: pointer; font-weight: 600;
}
.swatch[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.swatch .dot { width: 1.6rem; height: 1.6rem; border-radius: 50%; border: 2px solid #8a857d; flex: none; }
.swatch .dot.auto { background: linear-gradient(135deg, #fff 0 45%, #000 55% 100%); }
.swatch .dot.custom { background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red); }
.swatch input[type="color"] { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; border: 0; padding: 0; cursor: pointer; }

/* Opciones guardadas */
.framings { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); gap: .8rem; }
.framing { border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.framing.current { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.framing .thumb { display: block; width: 100%; padding: 0; border: 0; background: var(--stage); cursor: pointer; position: relative; }
.framing .thumb img { display: block; width: 100%; height: auto; }
.framing .badge { position: absolute; left: .4rem; top: .4rem; background: var(--accent); color: var(--accent-text); border-radius: 8px; padding: .1rem .5rem; font-size: .8rem; font-weight: 700; }
.framing .name { padding: .4rem .6rem 0; font-weight: 700; }
.framing .actions { display: grid; grid-template-columns: 1fr; gap: .3rem; padding: .4rem; }
.framing .actions .btn { min-height: 48px; padding: .3rem; font-size: .85rem; gap: .25rem; }
.framing .fav[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); }
.framing .fav[aria-pressed="true"] svg { fill: currentColor; }

/* Navegación entre pasos */
.stepnav {
  grid-area: nav;
  display: grid; grid-template-columns: 1fr 1.4fr; gap: .7rem;
  padding: .6rem max(1rem, env(safe-area-inset-right)) calc(.6rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.stepnav .btn { width: 100%; }

/* Vista para pintar */
.viewer {
  position: fixed; inset: 0; z-index: 40;
  background: var(--stage); color: #fff;
  display: grid; grid-template-rows: auto minmax(0, 1fr) auto;
  /* Márgenes de seguridad (muesca, barra de inicio); con el visor girado cambian de lado. */
  --sa-t: env(safe-area-inset-top); --sa-r: env(safe-area-inset-right);
  --sa-b: env(safe-area-inset-bottom); --sa-l: env(safe-area-inset-left);
}
.viewer.rot {
  --sa-t: env(safe-area-inset-right); --sa-r: env(safe-area-inset-bottom);
  --sa-b: env(safe-area-inset-left); --sa-l: env(safe-area-inset-top);
}
.viewer[hidden] { display: none; }
.viewer canvas { grid-row: 1 / 4; grid-column: 1; width: 100%; height: 100%; touch-action: none; display: block; }
.viewer-top, .viewer-bottom {
  grid-column: 1; z-index: 1;
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  padding: calc(.5rem + var(--sa-t)) max(.7rem, var(--sa-r)) .5rem max(.7rem, var(--sa-l));
  background: rgba(20, 21, 24, .86);
}
.viewer-top { grid-row: 1; }
.viewer-bottom { grid-row: 3; flex-direction: column; align-items: stretch; padding-top: .5rem; padding-bottom: calc(.6rem + var(--sa-b)); }
.viewer-info { flex: 1; font-weight: 600; font-size: .95rem; line-height: 1.25; min-width: 0; }
.viewer .btn { background: #34373c; color: #fff; border-color: #5d626a; }
.viewer .btn.toggle[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.viewer .choice { background: #34373c; color: #fff; border-color: #5d626a; }
.viewer .choice[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.viewer .choices { margin: 0; }
/* En las barras de la vista para pintar hay poco sitio: el color naranja ya marca la opción elegida. */
.viewer .choice { padding: .4rem .3rem; }
.viewer .choice[aria-pressed="true"]::before { content: none; }
/* Botones de abajo a dos columnas (tres en «Comparar»); el selector de tonos ocupa su propia fila. */
.viewer-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem; }
.viewer-row.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.viewer-row > .stepper { grid-column: 1 / -1; }
.top-stepper { flex: 1; min-width: 0; font-weight: 700; justify-content: space-around; }
.top-stepper > span { white-space: nowrap; font-size: .95rem; }
.top-stepper .btn { min-height: 52px; font-size: 1.2rem; padding-top: .2rem; padding-bottom: .2rem; line-height: 1; }
:root[data-font="xlarge"] .top-stepper .btn { width: 48px; }
/* Las filas de botones de abajo van solo con texto, para que las palabras quepan enteras. */
.viewer-row .btn svg { display: none; }
.viewer-row .btn, .viewer .choice { padding-left: .4rem; padding-right: .4rem; }
:root[data-font="large"] .viewer .btn svg,
:root[data-font="xlarge"] .viewer .btn svg { display: none; }
:root[data-font="large"] .viewer .choice,
:root[data-font="xlarge"] .viewer .choice { font-size: .92rem; }
.stepper { display: flex; align-items: center; gap: .5rem; justify-content: space-between; white-space: nowrap; }
.stepper[hidden] { display: none; }
.stepper .btn { width: 56px; font-size: 1.4rem; }

/* Herramientas de pintor */
/* Filas de abajo de la vista para pintar: la primera tiene siempre el mismo alto, sea la fila de
   modos, una vista especial o el resultado de una herramienta. */
.v-row1 { display: flex; align-items: stretch; min-height: 4.4rem; }
.v-row1 > * { flex: 1; min-width: 0; }
.v-bar {
  display: flex; align-items: center; gap: .6rem;
  background: #24272c; border: 2px solid #5d626a; border-radius: var(--radius);
  padding: .3rem .4rem .3rem .75rem;
}
.v-bar-text { flex: 1; min-width: 0; font-size: .92rem; line-height: 1.25; }
.v-bar-text p { margin: 0; }
.v-bar .palette { flex: 1; }
.v-bar #vBackColor { flex: none; min-height: 52px; }
.v-actions { display: flex; gap: .6rem; }
.v-actions .btn { flex: 1; min-height: 52px; }
.viewer .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
/* Con «Girar» arriba hay menos sitio: el número de tonos basta (el modo ya se ve abajo), los dos
   botones se estrechan y el texto, más pequeño, cabe en tres líneas sin cambiar el alto de la barra. */
.viewer.has-rotate:not([data-layout="side"]) .top-stepper .lbl { display: none; }
:root .viewer.has-rotate:not([data-layout="side"]) :is(#vExit, #vRotate) { padding-left: .5rem; padding-right: .5rem; font-size: min(1.05rem, 19px); }
.viewer.has-rotate:not([data-layout="side"]) .viewer-info {
  font-size: min(.85rem, 16px); line-height: 1.2;
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden;
}

/* Visor de lado (móvil en horizontal o girado con «Girar»): la foto a todo el alto a la izquierda
   y los botones en una columna estrecha a la derecha. La letra de la columna tiene un tope para
   que la columna no le quite sitio a la foto. */
.viewer[data-layout="side"] {
  grid-template-columns: minmax(0, 1fr) min(12rem, 228px);
  grid-template-rows: auto minmax(0, 1fr);
}
.viewer[data-layout="side"] canvas { grid-row: 1 / 3; grid-column: 1; margin-left: var(--sa-l); width: calc(100% - var(--sa-l)); }
.viewer[data-layout="side"] .viewer-top,
.viewer[data-layout="side"] .viewer-bottom {
  grid-column: 2; gap: .45rem; padding-left: .5rem; padding-right: max(.5rem, var(--sa-r));
  background: rgba(20, 21, 24, .94);
}
:root .viewer[data-layout="side"] :is(.btn, .choice, .top-stepper > span, .v-bar-text) { font-size: min(.95rem, 17px); }
.viewer[data-layout="side"] .viewer-info { font-size: min(.9rem, 17px); }
:root .viewer[data-layout="side"] :is(.btn, .choice) { min-height: 46px; padding-left: .3rem; padding-right: .3rem; }
.viewer[data-layout="side"] .viewer-top { grid-row: 1; padding-bottom: .2rem; }
.viewer[data-layout="side"] .viewer-top > * { order: 2; flex: 1 1 100%; }
.viewer[data-layout="side"] #vExit,
.viewer[data-layout="side"] #vRotate { order: 1; flex: 1 1 0; }
.viewer[data-layout="side"] .top-stepper .btn { width: 46px; min-height: 46px; }
/* Abajo, una rejilla de dos columnas: Color y Grises, Manchas y Espejo, Herramientas a lo ancho. */
.viewer[data-layout="side"] .viewer-bottom {
  grid-row: 2; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: end;
  padding-top: .2rem; overflow-y: auto;
}
.viewer[data-layout="side"] :is(.v-row1, #vMode, #vRow) { display: contents; }
.viewer[data-layout="side"] :is(#vExtra, #vTool, #vToolActions, #vTools) { grid-column: 1 / -1; }
.viewer[data-layout="side"] .v-bar { flex-wrap: wrap; padding: .4rem .5rem; }
.viewer[data-layout="side"] .v-bar .palette { flex-basis: 100%; }
.viewer[data-layout="side"] .v-bar #vBackColor { flex: 1 1 100%; }

/* Con el visor girado, los diálogos que se abren desde él también van de lado. */
html.rot dialog.sheet[open] {
  transform: rotate(90deg);
  max-width: none;
  width: min(32rem, calc(var(--win-h) - 1.5rem));
  max-height: calc(var(--win-w) - 2rem);
}

.pick { display: flex; gap: .7rem; align-items: center; }
.pick .swatch-big { width: 2.8rem; height: 2.8rem; border-radius: 10px; border: 2px solid #fff; flex: none; }
.top-scale { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.value-scale { display: grid; grid-template-columns: repeat(11, 1fr); gap: 2px; }
.value-scale i { height: 1.1rem; border-radius: 3px; }
.value-scale i.on { outline: 3px solid #ff7a3d; outline-offset: 1px; }
.value-scale-labels { display: flex; justify-content: space-between; font-size: .8rem; opacity: .9; }
.palette { display: flex; gap: 4px; flex-wrap: wrap; }
.palette:empty { display: none; }
.palette { gap: 3px; max-height: 2.7rem; overflow: hidden; }
.palette i { width: 1.25rem; height: 1.25rem; border-radius: 4px; border: 1px solid rgba(255,255,255,.5); }
.tool-list { display: flex; flex-direction: column; gap: .5rem; }
.tool-btn {
  display: flex; flex-direction: column; align-items: flex-start; gap: .15rem; text-align: left;
  min-height: 60px; padding: .6rem .9rem; cursor: pointer;
  border: 2px solid var(--border); border-radius: var(--radius); background: var(--bg); color: var(--text);
}
.tool-btn strong { font-size: 1.05rem; }
.tool-btn span { color: var(--muted); font-size: .95rem; }
.tool-btn[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }

/* Comparar con mi cuadro */
.cmp-stage { display: flex; flex-direction: column; gap: .6rem; }
.tips { margin: 0; padding-left: 1.3rem; font-size: 1rem; line-height: 1.4; }
.tips li { margin: .15rem 0; }
.mix-row { display: flex; align-items: center; gap: .7rem; font-weight: 700; }
.mix-row input { flex: 1; min-height: 44px; accent-color: var(--accent); }

/* Diálogos */
.sheet {
  width: min(32rem, calc(100% - 1.5rem));
  max-height: calc(100dvh - 2rem);
  border: 2px solid var(--border); border-radius: 18px;
  background: var(--surface); color: var(--text);
  padding: .5rem 1.2rem 0;
}
.sheet::backdrop { background: rgba(0, 0, 0, .55); }
.sheet h2 { font-size: 1.3rem; margin: .8rem 0 .5rem; }
.settings-group { margin-top: 1.2rem; padding-top: .3rem; border-top: 1px solid var(--border); scroll-margin-top: .5rem; }
.settings-group h3 { font-size: 1.15rem; margin: .7rem 0 .2rem; }
/* Los botones del diálogo quedan siempre visibles aunque haya que desplazarse. */
.dlg-actions {
  position: sticky; bottom: 0;
  display: flex; gap: .7rem;
  margin-top: 1rem; padding: .8rem 0 1.2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.dlg-actions .btn { flex: 1; }
.help-body p { margin: 0 0 .7rem; }
.install-steps { list-style: none; padding: 0; margin: 0; }
.install-steps li { display: flex; gap: .8rem; align-items: flex-start; margin: 0 0 .8rem; }
.install-steps .num {
  flex: none; display: grid; place-items: center;
  width: 2.4rem; height: 2.4rem; border-radius: 10px;
  background: var(--surface-2); border: 2px solid var(--border);
}
.install-steps .num svg { width: 1.4rem; height: 1.4rem; }
.version { text-align: right; font-size: .85rem; }

/* Mensajes */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(6rem + env(safe-area-inset-bottom));
  width: max-content; max-width: calc(100% - 1.5rem);
  display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; justify-content: center;
  padding: .8rem 1.2rem; border-radius: 14px;
  background: #1d2025; color: #fff; z-index: 60; font-weight: 600;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .3);
}
.toast[hidden] { display: none; }
.toast .btn { min-height: 44px; }

/* Tablet y ordenador: panel a la derecha */
@media (min-width: 820px) and (min-aspect-ratio: 1/1) {
  .app {
    grid-template-columns: minmax(0, 1fr) minmax(24rem, 34%);
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    grid-template-areas: "top top" "stage progress" "stage panel" "stage nav";
  }
  .progress { border-left: 1px solid var(--border); }
  .panel { max-height: none; border-top: 0; border-left: 1px solid var(--border); }
  .stepnav { border-left: 1px solid var(--border); }
  .viewer-bottom { flex-direction: row; align-items: center; }
  .viewer-bottom .v-row1 { flex: 1.4; }
  .viewer-bottom .viewer-row, .viewer-bottom .v-actions { flex: 1; }
}

/* Móviles: los botones de arriba de la vista para pintar, solo con texto, para caber en una línea. */
@media (max-width: 480px) {
  .viewer-top .btn svg { display: none; }
  .viewer-top .btn { padding-left: .8rem; padding-right: .8rem; }
}

/* Móviles: el nombre de la app cede su sitio a los botones de Ayuda y Ajustes */
@media (max-width: 480px) {
  .brand span { display: none; }
}
:root[data-font="xlarge"] .text-btn svg,
:root[data-font="xlarge"] .stepnav svg { display: none; }

/* Móvil y tablet en vertical: una sola barra arriba (el paso a la izquierda, Ayuda y Ajustes a la
   derecha) y la foto con un mínimo de pantalla garantizado según el paso. Si falta sitio, el panel
   de opciones se hace más bajo y se desplaza con el dedo; nunca tapa la foto. */
@media not all and (min-width: 820px) and (min-aspect-ratio: 1/1) {
  .app {
    --stage-min: 30dvh;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto minmax(var(--stage-min), 1fr) minmax(0, auto) auto;
    grid-template-areas: "progress top" "stage stage" "panel panel" "nav nav";
  }
  .app[data-step="2"] { --stage-min: 36dvh; }
  .app[data-step="3"] { --stage-min: 50dvh; }
  .app[data-step="4"] { --stage-min: 46dvh; }
  .app[data-step="5"] { --stage-min: 40dvh; }
  .stage { min-height: 0; }
  .panel { max-height: none; min-height: 0; }
  .progress {
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 0;
    padding-top: calc(.35rem + env(safe-area-inset-top)); line-height: 1.2;
  }
  .progress { min-width: 0; }
  .progress-step { font-size: .8rem; }
  .progress-step { white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
  .dots { display: none; }
  /* Ayuda y Ajustes solo con texto: el título del paso necesita el sitio. */
  .text-btn { padding: .3rem .45rem; }
  .text-btn svg { display: none; }
}
/* Letra muy grande: el color naranja basta para marcar la opción elegida. */
:root[data-font="xlarge"] .choice[aria-pressed="true"]::before { content: none; }
:root[data-font="xlarge"] .panel .choices.three { grid-template-columns: repeat(auto-fit, minmax(6rem, 1fr)); }
/* Letra muy grande en móviles estrechos: el paso vuelve a su propia fila para no cortarse. */
@media (max-width: 430px) {
  :root[data-font="xlarge"] .app {
    grid-template-rows: auto auto minmax(var(--stage-min), 1fr) minmax(0, auto) auto;
    grid-template-areas: "top top" "progress progress" "stage stage" "panel panel" "nav nav";
  }
  :root[data-font="xlarge"] .topbar { justify-content: flex-end; }
  :root[data-font="xlarge"] .progress { flex-direction: row; align-items: baseline; gap: .5rem; padding-top: .35rem; }
}
@media not all and (min-width: 600px) {
  .brand { display: none; }
}

/* Confirmaciones e imagen para guardar */
.confirm-msg { font-size: 1.1rem; margin: .8rem 0 0; }
.saved-img { display: block; max-width: 100%; max-height: 60dvh; margin: .6rem auto 0; border-radius: 8px; border: 1px solid var(--border); }