/* Caja de la cafetería (tablet o PC) */
body.caja-app { background: var(--fondo); min-height: 100vh; }
.caja-top { display: flex; align-items: center; gap: .9rem; padding: .8rem 1.2rem; background: var(--m-950); color: #fff; position: sticky; top: 0; z-index: 10; }
.caja-top .marca { display: flex; align-items: center; gap: .55rem; font-weight: 800; letter-spacing: -.02em; font-size: 1.1rem; }
.caja-top .marca img { width: 34px; height: 34px; border-radius: 11px; }
.caja-top .marca small { font-weight: 600; opacity: .6; font-size: .8rem; margin-left: .2rem; }
.caja-top .esp { flex: 1; }
.caja-top .turno { text-align: right; font-size: .78rem; opacity: .9; line-height: 1.25; }
.caja-top .turno b { font-size: 1rem; display: block; color: var(--menta-2); }
.caja-top .btn { padding: .6rem .9rem; font-size: .88rem; border-radius: 12px; }

.caja-grid { display: grid; grid-template-columns: minmax(330px, 420px) 1fr; gap: 1.2rem; padding: 1.2rem; max-width: 1400px; margin: 0 auto; }
@media (max-width: 860px) { .caja-grid { grid-template-columns: 1fr; padding: .9rem; } .caja-top .turno { display: none; } }

.cobro { background: var(--grad-top); color: #fff; border-radius: 28px; padding: 1.3rem; position: relative; overflow: hidden; box-shadow: var(--sombra-2); align-self: start; position: sticky; top: 76px; }
.cobro > *:not(.orbes) { position: relative; z-index: 1; }
.cobro .etq { font-size: .8rem; opacity: .75; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.cobro .total { font-size: 3.2rem; font-weight: 800; letter-spacing: -.04em; line-height: 1.05; margin: .2rem 0 .3rem; font-variant-numeric: tabular-nums; }
.cobro .total small { font-size: 1.5rem; opacity: .8; margin-right: .2rem; }
.cobro .ticket { font-size: .85rem; opacity: .9; min-height: 1.3em; margin-bottom: 1rem; }
.cobro .ticket span { display: inline-flex; align-items: center; gap: .3rem; background: rgba(255,255,255,.12); padding: .25rem .55rem; border-radius: 999px; margin: 0 .3rem .3rem 0; }
.cobro .ticket button { background: none; border: 0; color: #fff; opacity: .7; padding: 0; line-height: 1; }
.cobro .teclado { max-width: none; gap: .55rem; }
.cobro .teclado button { height: 58px; font-size: 1.4rem; }
.cobro .btn-cobrar { margin-top: 1rem; width: 100%; padding: 1.1rem; font-size: 1.15rem; border-radius: 18px; }

.productos-cab { display: flex; align-items: center; justify-content: space-between; margin-bottom: .8rem; }
.productos-cab h2 { margin: 0; font-size: 1.1rem; }
.productos { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .8rem; }
.producto { position: relative; border: 0; background: #fff; border-radius: 20px; padding: 1rem .9rem; text-align: left; box-shadow: var(--sombra); transition: transform .12s, box-shadow .2s; display: grid; gap: .3rem; }
.producto:active { transform: scale(.96); }
.producto .emoji { font-size: 2rem; line-height: 1; }
.producto .n { font-weight: 700; font-size: .92rem; line-height: 1.25; }
.producto .p { font-weight: 800; color: var(--m-600); }
.producto .cant { position: absolute; top: .6rem; right: .6rem; min-width: 28px; height: 28px; border-radius: 10px; background: var(--menta); color: var(--m-900); font-weight: 800; display: grid; place-items: center; font-size: .9rem; animation: pop .3s; }

/* Pantallas superpuestas del cobro */
.capa { position: fixed; inset: 0; z-index: 40; background: var(--grad-top); color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 1.5rem; text-align: center; overflow-y: auto; animation: aparecer .3s ease both; }
.capa > *:not(.orbes) { position: relative; z-index: 1; }
.capa .cerrar { position: absolute; top: 1rem; right: 1rem; z-index: 2; }
.capa h2 { margin: .8rem 0 .3rem; font-size: 1.6rem; letter-spacing: -.02em; }
.capa p { margin: 0; opacity: .82; }
.capa .monto-capa { font-size: 1rem; background: rgba(255,255,255,.12); padding: .45rem 1rem; border-radius: 999px; display: inline-block; margin-top: .7rem; font-weight: 700; }
.capa .monto-capa b { font-size: 1.25rem; }
.visor { width: min(420px, 90vw); aspect-ratio: 1; border-radius: 28px; overflow: hidden; background: #000; position: relative; margin: 1.2rem auto; box-shadow: 0 30px 60px -20px rgba(0,0,0,.6); }
.visor video { width: 100%; height: 100%; object-fit: cover; }
.visor::after { content: ''; position: absolute; inset: 18%; border: 3px solid var(--menta); border-radius: 22px; box-shadow: 0 0 0 999px rgba(0,0,0,.35); }
.visor .linea { position: absolute; left: 20%; right: 20%; height: 3px; background: var(--menta); box-shadow: 0 0 18px var(--menta); top: 20%; animation: escanear 1.8s ease-in-out infinite alternate; z-index: 1; }
@keyframes escanear { to { top: 79%; } }
.lector { width: min(420px, 90vw); margin: 1rem auto 0; }
.lector .entrada { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.2); color: #fff; text-align: center; font-size: 1.2rem; letter-spacing: .06em; }
.lector .entrada::placeholder { color: rgba(255,255,255,.55); }
.opciones-id { display: flex; gap: .6rem; justify-content: center; margin-top: 1rem; flex-wrap: wrap; }

.alumno-pin { display: flex; align-items: center; gap: 1rem; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15); padding: .8rem 1.1rem; border-radius: 22px; text-align: left; margin-bottom: .6rem; }
.alumno-pin .avatar { width: 64px; height: 64px; border-radius: 20px; font-size: 1.3rem; background: rgba(255,255,255,.18); color: #fff; }
.alumno-pin b { font-size: 1.15rem; display: block; }
.alumno-pin small { opacity: .75; }
.capa .puntos i { border-color: rgba(255,255,255,.5); }
.capa .puntos i.lleno { background: var(--menta); border-color: var(--menta); box-shadow: 0 0 0 5px rgba(31,220,170,.2); }
.capa .puntos.error i.lleno { background: #ff8a8e; border-color: #ff8a8e; }
.capa .teclado { width: min(340px, 86vw); }
.capa .msg-pin { min-height: 1.4em; margin-top: .4rem; font-weight: 700; color: #ffd0d2; }
.capa .exito .circulo.mal svg { color: #fff; }
.capa .saldo-final { margin-top: 1rem; background: rgba(255,255,255,.12); border-radius: 18px; padding: .8rem 1.4rem; display: inline-block; }
.capa .saldo-final b { display: block; font-size: 1.6rem; }

.login-caja { min-height: 100vh; display: grid; place-items: center; background: var(--grad-top); padding: 1.5rem; position: relative; overflow: hidden; }
.login-caja .caja { width: min(400px, 100%); position: relative; z-index: 1; padding: 1.8rem; }
.login-caja h1 { margin: .6rem 0 .2rem; font-size: 1.5rem; letter-spacing: -.03em; }