:root {
  --suelo:      #EEF1F0;
  --superficie: #FFFFFF;
  --papel:      #FCFCFA;
  --tinta:      #1D2433;
  --tinta-2:    #586273;
  --tinta-3:    #8A93A1;
  --linea:      #D6DCDB;
  --acento:     #0E6E64;
  --acento-2:   #0A5A52;
  --acento-bg:  #E2F0EE;
  --error:      #B3261E;
  --error-bg:   #FBEAE8;
  --ok:         #2F6B4F;
  --sombra:     0 1px 2px rgba(29,36,51,.06), 0 10px 30px -18px rgba(29,36,51,.35);

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --suelo:      #121619;
    --superficie: #1A2024;
    --papel:      #20272B;
    --tinta:      #E6EAEC;
    --tinta-2:    #A6AFB8;
    --tinta-3:    #7B8590;
    --linea:      #2E373D;
    --acento:     #5CC2B4;
    --acento-2:   #7BD3C7;
    --acento-bg:  #18302D;
    --error:      #F2938C;
    --error-bg:   #3A1F1D;
    --ok:         #7FC3A1;
    --sombra:     0 1px 2px rgba(0,0,0,.4), 0 10px 30px -18px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"] {
  --suelo:      #121619;
  --superficie: #1A2024;
  --papel:      #20272B;
  --tinta:      #E6EAEC;
  --tinta-2:    #A6AFB8;
  --tinta-3:    #7B8590;
  --linea:      #2E373D;
  --acento:     #5CC2B4;
  --acento-2:   #7BD3C7;
  --acento-bg:  #18302D;
  --error:      #F2938C;
  --error-bg:   #3A1F1D;
  --ok:         #7FC3A1;
  --sombra:     0 1px 2px rgba(0,0,0,.4), 0 10px 30px -18px rgba(0,0,0,.7);
}

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

body {
  margin: 0;
  background: var(--suelo);
  color: var(--tinta);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.pagina {
  max-width: 34rem;
  margin: 0 auto;
  padding: 2rem 16px 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cabecera { display: flex; flex-direction: column; gap: .4rem; }
.emisor {
  margin: 0; font-size: .78rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--acento);
}
h1 { margin: 0; font-size: 1.85rem; line-height: 1.15; letter-spacing: -.01em; text-wrap: balance; }
h2 { margin: 0; text-wrap: balance; }
.entradilla { margin: 0; color: var(--tinta-2); }

.etiqueta {
  font-size: .75rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--tinta-2); margin-bottom: .6rem;
}

/* ── Avisos de estado ─────────────────────────── */
.aviso {
  background: var(--superficie); border: 1px solid var(--linea);
  border-radius: 10px; padding: 1.25rem; box-shadow: var(--sombra);
  display: flex; flex-direction: column; gap: .5rem;
}
.aviso h2 { font-size: 1.15rem; }
.aviso p { margin: 0; color: var(--tinta-2); }
.aviso.ok { border-left: 4px solid var(--ok); }
.aviso.malo { border-left: 4px solid var(--error); }
#estado-carga { flex-direction: row; align-items: center; gap: .75rem; }
.giro {
  width: 18px; height: 18px; flex: none; border-radius: 50%;
  border: 2px solid var(--linea); border-top-color: var(--acento);
  animation: girar .8s linear infinite;
}
@keyframes girar { to { transform: rotate(360deg); } }

/* ── El ticket, como un recibo de papel térmico ─ */
.recibo {
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--mono);
  font-size: .86rem;
  font-variant-numeric: tabular-nums;
  padding: 1.1rem 1.1rem 1.3rem;
  box-shadow: var(--sombra);
  /* borde inferior dentado, como el corte del papel */
  --diente: 7px;
  -webkit-mask: linear-gradient(#000 0 0) top / 100% calc(100% - var(--diente)) no-repeat,
                conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(2 * var(--diente)) var(--diente) repeat-x;
          mask: linear-gradient(#000 0 0) top / 100% calc(100% - var(--diente)) no-repeat,
                conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(2 * var(--diente)) var(--diente) repeat-x;
  display: flex; flex-direction: column; gap: .8rem;
}
.recibo-cab {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-weight: 700; padding-bottom: .6rem; border-bottom: 1px dashed var(--tinta-3);
}
.recibo-lineas { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .3rem; }
.recibo-lineas li { display: flex; justify-content: space-between; gap: 1rem; }
.recibo-lineas .desc { overflow-wrap: anywhere; }
.recibo-lineas .imp { flex: none; }
.recibo-totales {
  margin: 0; padding-top: .6rem; border-top: 1px dashed var(--tinta-3);
  display: flex; flex-direction: column; gap: .2rem;
}
.recibo-totales div { display: flex; justify-content: space-between; }
.recibo-totales dt, .recibo-totales dd { margin: 0; }
.recibo-totales .total { font-weight: 700; font-size: 1.05rem; margin-top: .25rem; }

/* ── Formulario ───────────────────────────────── */
form {
  background: var(--superficie); border: 1px solid var(--linea);
  border-radius: 10px; padding: 1.25rem; box-shadow: var(--sombra);
  display: flex; flex-direction: column; gap: 1rem;
}
form .etiqueta { margin-bottom: 0; }
.campo { display: flex; flex-direction: column; gap: .3rem; min-width: 0; }
.fila { display: grid; grid-template-columns: 8.5rem 1fr; gap: .75rem; }
label { font-size: .92rem; font-weight: 600; }
input, select {
  font: inherit; color: var(--tinta); background: var(--superficie);
  border: 1px solid var(--linea); border-radius: 8px;
  padding: .7rem .8rem; min-height: 48px; width: 100%;
}
input:focus-visible, select:focus-visible, .boton:focus-visible {
  outline: 3px solid var(--acento); outline-offset: 2px;
}
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--error); }
#nif { text-transform: uppercase; font-family: var(--mono); letter-spacing: .04em; }

.casilla { display: grid; grid-template-columns: auto 1fr; gap: .2rem .7rem; align-items: start; }
.casilla input { width: 22px; height: 22px; min-height: 0; margin: .15rem 0 0; accent-color: var(--acento); }
.casilla label { font-weight: 400; font-size: .88rem; color: var(--tinta-2); }
.casilla .error { grid-column: 1 / -1; }

.ayuda { margin: 0; font-size: .82rem; color: var(--tinta-3); }
.error { margin: 0; font-size: .85rem; color: var(--error); min-height: 0; }
.error:empty { display: none; }
.error.general:not(:empty) { background: var(--error-bg); padding: .7rem .8rem; border-radius: 8px; }

.boton {
  display: inline-flex; justify-content: center; align-items: center;
  font: inherit; font-weight: 700; text-decoration: none;
  background: var(--acento); color: var(--superficie);
  border: 0; border-radius: 8px; padding: .85rem 1.2rem; min-height: 52px;
  cursor: pointer;
}
.boton:hover { background: var(--acento-2); }
.boton[disabled] { opacity: .6; cursor: progress; }
.nota { margin: 0; font-size: .8rem; color: var(--tinta-3); text-align: center; }

@media (max-width: 380px) {
  .fila { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .giro { animation: none; }
}