:root {
  --tinta: #16211C;
  --tinta-suave: #55645C;
  --gris: #7C8A83;
  --verde: #0FA968;
  --verde-oscuro: #0A8151;
  --verde-suave: #E9F9F1;
  --ambar: #B7791F;
  --ambar-suave: #FDF6E7;
  --rojo: #C53030;
  --borde: #E1E8E4;
  --borde-fuerte: #C9D5CE;
  --fondo: #FFFFFF;
  --fondo-alt: #F6FAF8;
  --radio: 16px;
  --sombra: 0 1px 2px rgba(22, 33, 28, .04), 0 8px 24px rgba(22, 33, 28, .06);
}

* { box-sizing: border-box; }

/* Necesario: .resumen y .visor declaran display y ganarían al [hidden] del navegador. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--fondo);
  color: var(--tinta);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1 0 auto;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 96px;
}

/* ---------- barra ---------- */
.barra {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.marca {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: var(--tinta);
  font-weight: 650;
  letter-spacing: -.02em;
  font-size: 17px;
}

.marca-icono {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--verde);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sello {
  font-size: 12px;
  color: var(--verde-oscuro);
  background: var(--verde-suave);
  border: 1px solid #C8EEDC;
  padding: 5px 11px;
  border-radius: 999px;
  letter-spacing: .01em;
}

/* ---------- hero ---------- */
.hero {
  text-align: center;
  padding: 22px 0 38px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5.2vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -.035em;
  font-weight: 640;
}

.hero h1 em {
  font-style: normal;
  color: var(--verde);
}

.bajada {
  margin: 0 auto;
  max-width: 460px;
  color: var(--tinta-suave);
  font-size: 16px;
  line-height: 1.55;
}

/* ---------- zona de carga ---------- */
.zona {
  border: 2px dashed var(--borde-fuerte);
  border-radius: 22px;
  padding: 54px 24px 50px;
  text-align: center;
  cursor: pointer;
  background: var(--fondo);
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}

.zona:hover,
.zona:focus-visible {
  border-color: var(--verde);
  background: var(--fondo-alt);
  outline: none;
}

.zona.activa {
  border-color: var(--verde);
  background: var(--verde-suave);
  transform: scale(1.005);
}

.icono-subir {
  width: 62px;
  height: 62px;
  padding: 15px;
  border-radius: 50%;
  background: var(--verde-suave);
  fill: none;
  stroke: var(--verde);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 16px;
  transition: transform .18s ease, background .18s ease;
}

.zona:hover .icono-subir,
.zona.activa .icono-subir {
  transform: translateY(-2px);
  background: #DCF5E8;
}

.zona-titulo {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -.015em;
}

.zona-sub {
  margin: 0;
  color: var(--gris);
  font-size: 14px;
}

.enlace {
  color: var(--verde-oscuro);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- opciones ---------- */
.opciones {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  align-items: flex-end;
  margin-top: 22px;
  padding: 18px 20px;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background: var(--fondo-alt);
}

.campo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--gris);
  letter-spacing: .02em;
  text-transform: uppercase;
  font-weight: 600;
}

.campo select {
  font: inherit;
  font-size: 14px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
  color: var(--tinta);
  background: var(--fondo);
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 8px 10px;
  min-width: 168px;
}

.campo select:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.campo-calidad { min-width: 190px; }

.campo-calidad b { color: var(--tinta); font-variant-numeric: tabular-nums; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: var(--borde-fuerte);
  outline: none;
  margin: 12px 0 6px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--verde);
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--verde);
  border: 2px solid #fff;
  cursor: pointer;
}

.interruptor {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--tinta-suave);
  cursor: pointer;
  padding-bottom: 8px;
}

.interruptor input { accent-color: var(--verde); width: 16px; height: 16px; }

/* ---------- resumen ---------- */
.resumen {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-top: 22px;
  padding: 16px 20px;
  border: 1px solid #C8EEDC;
  background: var(--verde-suave);
  border-radius: var(--radio);
}

.resumen-datos { display: flex; flex-direction: column; gap: 3px; }
.resumen-datos strong { font-size: 17px; letter-spacing: -.02em; }
.resumen-datos span { font-size: 13px; color: var(--tinta-suave); }
.resumen-acciones { display: flex; gap: 10px; }

/* ---------- botones ---------- */
.boton {
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  color: #fff;
  background: var(--verde);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background .15s ease, transform .1s ease;
}

.boton:hover { background: var(--verde-oscuro); }
.boton:active { transform: translateY(1px); }

.boton.fantasma {
  background: transparent;
  color: var(--tinta-suave);
  border-color: var(--borde-fuerte);
}

.boton.fantasma:hover { background: var(--fondo); color: var(--tinta); }

.boton:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- lista ---------- */
.lista { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; }

.item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--borde);
  border-radius: 14px;
  background: var(--fondo);
  transition: border-color .15s ease, box-shadow .15s ease;
}

.item:hover { box-shadow: var(--shadow, var(--sombra)); border-color: var(--borde-fuerte); }
.item.revisar { border-color: #EBD9AE; background: var(--ambar-suave); }
.item.error { border-color: #F3C6C6; background: #FDF2F2; }

.miniatura {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  object-fit: cover;
  background: var(--fondo-alt);
  border: 1px solid var(--borde);
  cursor: zoom-in;
}

.item-datos { min-width: 0; }

.item-nombre {
  font-size: 14px;
  font-weight: 560;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0 0 4px;
}

.item-pesos {
  font-size: 13px;
  color: var(--tinta-suave);
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.item-pesos s {
  color: var(--gris);
  text-decoration-thickness: 1px;
  text-decoration-color: var(--borde-fuerte);
}

.ahorro {
  color: var(--verde-oscuro);
  font-weight: 600;
  background: var(--verde-suave);
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 12px;
}

.barra-ahorro {
  height: 3px;
  max-width: 220px;
  border-radius: 3px;
  background: var(--borde);
  margin-top: 8px;
  overflow: hidden;
}

.barra-ahorro i {
  display: block;
  height: 100%;
  background: var(--verde);
  border-radius: 3px;
  transition: width .4s ease;
}

.estado {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--fondo-alt);
  color: var(--gris);
  white-space: nowrap;
}

.estado.listo { background: var(--verde-suave); color: var(--verde-oscuro); }
.estado.procesando { background: #EFF6FF; color: #1D4ED8; }
.estado.revisar { background: #FBEED2; color: var(--ambar); }
.estado.error { background: #FDE4E4; color: var(--rojo); }

.acciones-item { display: flex; gap: 8px; align-items: center; }

.boton-icono {
  border: 1px solid var(--borde-fuerte);
  background: var(--fondo);
  color: var(--tinta-suave);
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
}

.boton-icono:hover { border-color: var(--verde); color: var(--verde-oscuro); }

/* ---------- revisión ---------- */
.revision {
  margin-top: 32px;
  padding: 20px 22px;
  border: 1px solid #EBD9AE;
  border-radius: var(--radio);
  background: var(--ambar-suave);
}

.revision h2 { margin: 0 0 6px; font-size: 16px; letter-spacing: -.01em; }
.revision-sub { margin: 0 0 16px; font-size: 13.5px; color: #7A6427; line-height: 1.5; }
.revision-lista { display: flex; gap: 12px; flex-wrap: wrap; }

.revision-item {
  background: #fff;
  border: 1px solid #EADFC4;
  border-radius: 12px;
  padding: 10px;
  width: 150px;
  cursor: zoom-in;
}

.revision-item img { width: 100%; height: 96px; object-fit: cover; border-radius: 8px; display: block; }
.revision-item p { margin: 8px 0 0; font-size: 12px; color: var(--tinta-suave); }
.revision-item b { display: block; font-size: 12px; color: var(--ambar); }

/* ---------- pie ---------- */
.pie {
  width: 100%;
  max-width: 860px;
  margin: auto auto 0;
  padding: 24px 24px 40px;
  color: var(--gris);
  font-size: 12.5px;
  line-height: 1.6;
}

.pie p { margin: 0; border-top: 1px solid var(--borde); padding-top: 18px; }

/* ---------- visor ---------- */
.visor {
  position: fixed;
  inset: 0;
  background: rgba(12, 18, 15, .82);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 50;
}

.visor-caja {
  width: min(920px, 100%);
  background: #101614;
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
}

.visor-lienzo {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 10px;
  background: #000;
}

.visor-lienzo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.visor-manija {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .3);
  pointer-events: none;
}

.visor-manija::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .4);
}

#visorRango { width: 100%; margin: 14px 0 6px; }

.visor-pie {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: #C9D5CE;
  font-size: 13px;
  padding: 0 4px 2px;
}

.visor-pie .boton.fantasma { border-color: #3A4A42; color: #C9D5CE; }
.visor-pie .boton.fantasma:hover { background: #1C2723; color: #fff; }

/* ---------- responsive ---------- */
@media (max-width: 560px) {
  main { padding: 0 16px 72px; }
  .barra { padding: 16px; }
  .hero { padding: 20px 0 28px; }
  .zona { padding: 40px 16px; }
  .opciones { gap: 12px; padding: 14px; }
  .campo select { min-width: 0; width: 100%; }
  .campo { flex: 1 1 46%; }
  .item { grid-template-columns: 52px 1fr; }
  .item .acciones-item { grid-column: 1 / -1; justify-content: flex-end; }
  .miniatura { width: 52px; height: 52px; }
  .resumen { flex-direction: column; align-items: stretch; }
  .resumen-acciones .boton { flex: 1; }
}