/* Pantalla «Ver en mi pared». Móvil primero, sin lenguaje de laboratorio. */
:root{
  --bg:#faf9f7; --card:#fff; --line:#e6e2db; --ink:#1a1a1a; --dim:#6b6861;
  --accent:#1a1a1a; --ok:#2e7d5b; --warn:#8a6a1f; --bad:#b03b32;
  --wall:#ece8e2;
  --r:14px; --gut:16px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){
    --bg:#121212; --card:#1c1c1c; --line:#2e2e2e; --ink:#f2f2f2; --dim:#a3a3a3;
    --accent:#c9a227; --ok:#4caf7d; --warn:#d9a13b; --bad:#d4594f;
    --wall:#242424;
  }
}

/* `hidden` debe ganar SIEMPRE: equivale a display:none, pero cualquier regla
   de clase con `display:` lo sobrescribe por especificidad. Sin esto se
   superponen el cargador, el error y el contenido. */
[hidden]{display:none!important}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;line-height:1.5;
  -webkit-text-size-adjust:100%;overscroll-behavior:none}
.app{max-width:520px;margin:0 auto;padding:var(--gut) var(--gut) 32px}

.loading,.error{display:grid;place-items:center;gap:12px;min-height:60vh;text-align:center}
.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.error h2{margin:0;font-size:1.1rem}
.error p{color:var(--dim);margin:0;max-width:34ch}
.diag{margin:10px 0 0;font-size:.72rem;color:var(--dim);
  font-family:ui-monospace,'SF Mono',Menlo,monospace}
.error .btn{margin-top:6px}

/* ---------- Vista previa viva ---------- */
.preview{margin:0 0 14px}
.preview__wall{position:relative;background:var(--wall);border:1px solid var(--line);
  border-radius:var(--r);height:46vh;min-height:230px;max-height:360px;
  display:grid;place-items:center;overflow:hidden}
.preview__poster{position:relative;box-sizing:content-box;
  box-shadow:0 10px 26px rgba(0,0,0,.22);transition:width .22s ease,height .22s ease,
  padding .22s ease,background .22s ease}
.preview__art{display:block;width:100%;height:100%;object-fit:fill}
.preview__dims{position:absolute;inset:0;pointer-events:none;overflow:visible}
.dims__line,.dims__cap{stroke:var(--ink);stroke-width:1.4;opacity:.65}
.dims__txt{fill:var(--ink);font:600 12px system-ui,sans-serif;text-anchor:middle;opacity:.85}

.head{margin:0 0 12px}
h1{font-size:1.12rem;line-height:1.3;margin:0 0 3px;font-weight:650}
.sub{margin:0;color:var(--dim);font-size:.9rem}

.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:14px;margin-bottom:12px}

/* ---------- Mando de talla y marco ---------- */
.sfbar__block+.sfbar__block{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.sfbar__h{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--dim);margin-bottom:8px}

.stepper{display:flex;align-items:center;gap:10px}
.stepper__btn{flex:0 0 46px;height:46px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg);color:var(--ink);display:grid;place-items:center;cursor:pointer}
.stepper__btn:disabled{opacity:.3;cursor:not-allowed}
.stepper__now{flex:1 1 auto;text-align:center;min-width:0}
.stepper__cm{display:block;font-size:1.45rem;font-weight:700;font-variant-numeric:tabular-nums;
  line-height:1.15}
.stepper__tag{display:block;font-size:.76rem;color:var(--dim);letter-spacing:.04em}

.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.chip{appearance:none;font:inherit;font-size:.86rem;font-weight:600;cursor:pointer;
  padding:8px 13px;min-height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg);color:var(--ink);display:inline-flex;align-items:center;gap:7px}
.chip--on{background:var(--accent);color:var(--bg);border-color:transparent}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .chip--on{color:#141414}}
.chip:disabled{opacity:.35;cursor:not-allowed}
.swatch{width:15px;height:15px;border-radius:4px;border:1px solid rgba(128,128,128,.5);
  display:inline-block;flex:0 0 auto}
.swatch--none{background:repeating-linear-gradient(45deg,transparent,transparent 3px,
  currentColor 3px,currentColor 4px)}

.select{width:100%;padding:12px;font-size:1rem;border-radius:10px;min-height:48px;
  background:var(--bg);color:var(--ink);border:1px solid var(--line)}

.scale-note{margin:0 0 12px;padding:10px 12px;border-radius:10px;font-size:.83rem;
  background:rgba(217,161,59,.13);border-left:3px solid var(--warn)}
.scale-note--bad{background:rgba(176,59,50,.13);border-left-color:var(--bad)}

/* ---------- Botones ---------- */
.btn{appearance:none;border:1px solid var(--line);border-radius:12px;padding:13px 18px;
  font:inherit;font-weight:600;background:var(--card);color:var(--ink);cursor:pointer;
  min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:11px;
  text-decoration:none;text-align:left}
.btn--primary{background:var(--accent);color:var(--bg);border-color:transparent}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .btn--primary{color:#141414}}
.btn--big{width:100%;padding:15px 18px}
.btn--big b{display:block;font-size:1.02rem}
.btn--big small{display:block;font-weight:500;font-size:.78rem;opacity:.72;margin-top:1px}
.btn--wide{width:100%;justify-content:center}
.btn--ghost{background:transparent}
.btn:disabled{opacity:.45;cursor:not-allowed}
.go{display:grid;gap:10px;margin-bottom:18px}

.linkbtn{appearance:none;border:0;background:none;font:inherit;font-size:.84rem;
  color:var(--dim);text-decoration:underline;cursor:pointer;padding:8px 4px;
  min-height:44px;width:100%}

.diagbox{margin:0 0 16px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--card);font-size:.78rem}
.diagbox summary{padding:11px 14px;cursor:pointer;color:var(--dim);
  font-weight:600;list-style:none}
.diagbox summary::-webkit-details-marker{display:none}
.diagbox summary::before{content:'▸ ';}
.diagbox[open] summary::before{content:'▾ ';}
.diagbox dl{margin:0;padding:0 14px 4px;display:grid;
  grid-template-columns:minmax(0,1fr) auto;gap:3px 10px}
.diagbox dt{color:var(--dim);min-width:0;overflow-wrap:anywhere}
.diagbox dd{margin:0;text-align:right;font-weight:600;
  font-family:ui-monospace,'SF Mono',Menlo,monospace;overflow-wrap:anywhere}
.diagbox .si{color:var(--ok)}
.diagbox .no{color:var(--bad)}
.diagbox__h{margin:4px 14px 12px;color:var(--dim);font-size:.74rem}

.foot{margin-top:4px}
.legal{margin:12px 0 0;font-size:.74rem;color:var(--dim);text-align:center}

.sample-note{margin-bottom:12px;padding:10px 12px;border-radius:10px;
  font-size:.84rem;line-height:1.45;background:rgba(201,162,39,.14);
  border-left:3px solid var(--accent)}
.sample-note strong{text-transform:uppercase;letter-spacing:.04em;font-size:.76rem}

.iconbtn{appearance:none;border:0;border-radius:999px;background:rgba(0,0,0,.55);
  color:#fff;font:inherit;font-size:.85rem;font-weight:600;padding:9px 14px;
  min-height:40px;min-width:40px;cursor:pointer;backdrop-filter:blur(6px)}

/* ---------- Escenario sobre foto ---------- */
.stage{position:fixed;inset:0;z-index:50;background:#0b0b0b;color:#fff;
  display:flex;flex-direction:column;touch-action:none}
.stage__photo{position:relative;flex:1 1 auto;min-height:0;overflow:hidden}
.stage__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;
  background:#0b0b0b}
.stage__layer{position:absolute;inset:0;touch-action:none;cursor:grab}
.poster{position:absolute;box-sizing:border-box;box-shadow:0 14px 34px rgba(0,0,0,.45)}
.poster__art{display:block;width:100%;height:100%;object-fit:fill}
.poster--framed{box-shadow:0 14px 34px rgba(0,0,0,.55)}
.dims{position:absolute;inset:0;pointer-events:none;overflow:visible}
.stage .dims__line,.stage .dims__cap{stroke:#fff;stroke-width:1.6;opacity:.95}
.stage .dims__txt{fill:#fff;font:700 13px system-ui,sans-serif;text-anchor:middle;
  paint-order:stroke;stroke:rgba(0,0,0,.55);stroke-width:3px}
.stage__hint{position:absolute;left:50%;top:14px;transform:translateX(-50%);margin:0;
  background:rgba(0,0,0,.55);padding:7px 13px;border-radius:999px;font-size:.8rem;
  backdrop-filter:blur(6px);transition:opacity .4s;text-align:center;max-width:90%}
.stage__hint--off{opacity:0}
.stage__bar{flex:0 0 auto;background:#161616;border-top:1px solid #262626;
  padding:10px var(--gut) calc(12px + env(safe-area-inset-bottom));
  max-height:52vh;overflow-y:auto}
.stage__bartop{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.stage__cm{flex:1 1 auto;text-align:center;font-size:1.2rem;font-weight:700;
  font-variant-numeric:tabular-nums}
.stage__note{margin:10px 0 0;font-size:.74rem;color:#9b9b9b;line-height:1.45}
.scale{display:block;margin-top:12px}
.scale__t{display:block;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;
  color:#9b9b9b;margin-bottom:5px}
.scale input{width:100%;height:34px}

/* El mando dentro de un escenario oscuro. */
.sfbar--stage .sfbar__h{color:#9b9b9b}
.sfbar--stage .sfbar__block+.sfbar__block{border-top-color:#262626}
.sfbar--stage .stepper__btn{background:#222;border-color:#333;color:#fff}
.sfbar--stage .stepper__cm{font-size:1.15rem}
.sfbar--stage .chip{background:#222;border-color:#333;color:#eee}
.sfbar--stage .chip--on{background:#fff;color:#111;border-color:#fff}

/* ---------- Superposición de la AR del navegador ---------- */
.xr{position:fixed;inset:0;z-index:60;color:#fff;display:flex;flex-direction:column;
  justify-content:space-between;pointer-events:none;
  font-family:system-ui,-apple-system,sans-serif}
.xr > *{pointer-events:auto}
.xr__top{display:flex;align-items:center;gap:8px;
  padding:calc(10px + env(safe-area-inset-top)) 14px 0}
.xr__top .iconbtn[aria-pressed=false]{opacity:.5}
.xr__cm{flex:1 1 auto;text-align:center;font-size:1.15rem;font-weight:700;
  font-variant-numeric:tabular-nums;text-shadow:0 1px 6px rgba(0,0,0,.8)}
.xr__hint{align-self:center;margin:0;background:rgba(0,0,0,.6);padding:9px 15px;
  border-radius:999px;font-size:.84rem;backdrop-filter:blur(6px);max-width:86%;
  text-align:center}
.xr__bar{background:rgba(14,14,14,.86);backdrop-filter:blur(12px);
  border-top:1px solid rgba(255,255,255,.12);
  padding:12px var(--gut) calc(14px + env(safe-area-inset-bottom));max-height:44vh;
  overflow-y:auto}

@media (orientation:landscape) and (max-height:520px){
  .preview__wall{height:40vh;min-height:150px}
  h1{font-size:1rem}
  .stage__bar{max-height:62vh}
}


/* ---------- Cámara en vivo con escala calibrada ----------
   Para teléfonos sin ARCore: no hay seguimiento espacial, así que la escala
   sale de una referencia de tamaño conocido que marca el cliente. El aviso de
   «modo aproximado» está siempre a la vista a propósito. */
.stage--camera .stage__video{position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;background:#0b0b0b}
.badge-aprox{position:absolute;right:12px;top:12px;background:rgba(176,59,50,.88);
  color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.04em;
  text-transform:uppercase;padding:6px 11px;border-radius:999px;
  backdrop-filter:blur(6px)}
.calib{position:absolute;inset:0;pointer-events:none;overflow:visible}
.calib__p{fill:#fff;stroke:rgba(0,0,0,.55);stroke-width:2}
.calib__l{stroke:#fff;stroke-width:2.4;stroke-dasharray:7 5}
.calib__ref{display:block;margin-bottom:10px}
.stage__note--lead{margin:0 0 12px;color:#cfcfcf;font-size:.82rem}
.stage--camera .select{background:#222;border-color:#333;color:#eee}
.stage--camera .stage__bar{max-height:58vh}