/* =========================================================
   Herramienta de semitonos — estilos aislados (no depende del sitio)
   ========================================================= */

:root {
  color-scheme: light;
  --semi-azul: #0B3DFF;
  --semi-azul-oscuro: #0030CC;
  --semi-tinta: #0A1026;
  --semi-texto: #26314D;
  --semi-suave: #5A6A8A;
  --semi-borde: #DCE3F1;
  --semi-borde-fuerte: #C6D0E4;
  --semi-fondo: #F4F6FB;
  --semi-blanco: #FFFFFF;
  --semi-error: #B42318;
  --semi-error-fondo: #FEF3F2;
  --semi-radio: 16px;
  --semi-sombra: 0 12px 34px rgba(10, 16, 38, 0.07);
  --semi-fuente: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 0%, rgba(11, 61, 255, 0.07), transparent 32rem),
    var(--semi-fondo);
  color: var(--semi-texto);
  font-family: var(--semi-fuente);
  font-size: 16px;
  line-height: 1.55;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

a {
  color: var(--semi-azul);
}

button,
input {
  font: inherit;
}

:where(a, button, input):focus-visible {
  outline: 3px solid var(--semi-azul);
  outline-offset: 3px;
}

/* ---------- Cabecera ---------- */

.semi-cabecera {
  background:
    radial-gradient(circle at 78% 18%, rgba(11, 61, 255, 0.55), transparent 30rem),
    linear-gradient(135deg, #060913 0%, #0A1535 62%, #0B1D4D 100%);
  color: #FFFFFF;
  padding: 20px 24px 56px;
}

.semi-cabecera__barra,
.semi-cabecera__texto,
.semi-principal,
.semi-pie {
  width: min(1180px, 100%);
  margin-inline: auto;
}

.semi-cabecera__barra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.semi-marca {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.semi-marca > span:first-child {
  color: #8FB0FF;
}

.semi-marca__etiqueta {
  margin-left: 8px;
  padding: 2px 8px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  color: #DCE5FA;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
}

.semi-volver {
  color: #C9D5F2;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.semi-volver:hover {
  color: #FFFFFF;
}

.semi-cabecera__texto {
  margin-top: 44px;
}

.semi-sobretitulo {
  margin-bottom: 12px;
  color: #A9C2FF;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.semi-cabecera h1 {
  max-width: 14ch;
  margin-bottom: 14px;
  font-size: clamp(2.2rem, 5.4vw, 3.8rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.semi-entrada {
  max-width: 64ch;
  margin-bottom: 0;
  color: #D7E0F5;
  font-size: 1.05rem;
}

/* ---------- Estructura ---------- */

.semi-principal {
  margin-top: -28px;
  padding: 0 24px 40px;
}

.semi-tablero {
  display: grid;
  grid-template-columns: minmax(0, 390px) minmax(0, 1fr);
  align-items: start;
  gap: 20px;
}

.semi-columna {
  display: grid;
  gap: 20px;
}

.semi-panel {
  background: var(--semi-blanco);
  border: 1px solid var(--semi-borde);
  border-radius: var(--semi-radio);
  box-shadow: var(--semi-sombra);
  padding: 24px;
}

.semi-panel--vistas {
  padding-bottom: 20px;
}

.semi-panel__cabecera {
  margin-bottom: 20px;
}

.semi-panel__cabecera h2 {
  margin-bottom: 8px;
  color: var(--semi-tinta);
  font-size: 1.3rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.semi-panel__cabecera > p:last-child {
  margin-bottom: 0;
  color: var(--semi-suave);
  font-size: 0.92rem;
}

.semi-paso {
  margin-bottom: 8px;
  color: var(--semi-azul);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- Zona de carga ---------- */

.semi-zona {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 26px 20px 24px;
  border: 2px dashed var(--semi-borde-fuerte);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(11, 61, 255, 0.035), rgba(11, 61, 255, 0.01)),
    #FBFCFE;
  color: var(--semi-tinta);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.semi-zona:hover,
.semi-zona.esta-arrastrando {
  border-color: var(--semi-azul);
  background-color: #F2F6FF;
}

.semi-zona.esta-arrastrando {
  transform: translateY(-1px);
}

.semi-zona:focus-within {
  outline: 3px solid var(--semi-azul);
  outline-offset: 3px;
}

.semi-zona[aria-busy="true"] {
  cursor: progress;
  opacity: 0.75;
}

.semi-zona__icono {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 6px;
  border-radius: 50%;
  background: #E8EEFF;
  color: var(--semi-azul);
}

.semi-zona__titulo {
  font-size: 1.02rem;
  font-weight: 750;
}

.semi-zona__texto {
  color: var(--semi-suave);
  font-size: 0.88rem;
}

.semi-zona__boton {
  margin-top: 10px;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--semi-azul);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 700;
}

/* El input sigue en el orden de tabulación, pero sin ocupar espacio. */
.semi-archivo {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.semi-ayuda {
  margin: 10px 0 0;
  color: var(--semi-suave);
  font-size: 0.82rem;
}

.semi-error {
  margin: 14px 0 0;
  padding: 11px 13px;
  border: 1px solid #F3B7B2;
  border-left: 4px solid var(--semi-error);
  border-radius: 8px;
  background: var(--semi-error-fondo);
  color: var(--semi-error);
  font-size: 0.88rem;
  font-weight: 600;
}

.semi-estado {
  margin: 10px 0 0;
  color: var(--semi-suave);
  font-size: 0.84rem;
}

.semi-estado:empty,
.semi-resumen:empty {
  display: none;
}

.semi-meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--semi-borde);
  font-size: 0.84rem;
}

.semi-meta__fila {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 10px;
  padding: 5px 0;
}

.semi-meta dt {
  color: var(--semi-suave);
}

.semi-meta dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--semi-tinta);
  font-weight: 600;
}

/* ---------- Controles ---------- */

.semi-controles {
  display: grid;
  gap: 22px;
}

.semi-control {
  margin-bottom: 0;
}

.semi-control__cabecera {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.semi-control__etiqueta {
  color: var(--semi-tinta);
  font-size: 0.92rem;
  font-weight: 700;
}

.semi-control__valor {
  min-width: 62px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #E8EEFF;
  color: var(--semi-azul-oscuro);
  font-size: 0.9rem;
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.semi-rango {
  --semi-avance: 10%;
  display: block;
  width: 100%;
  height: 44px;
  margin: 0;
  background: transparent;
  cursor: pointer;
  accent-color: var(--semi-azul);
}

.semi-rango:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.semi-rango::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--semi-azul) 0%,
    var(--semi-azul) var(--semi-avance),
    #DCE3F1 var(--semi-avance),
    #DCE3F1 100%
  );
}

.semi-rango::-webkit-slider-thumb {
  width: 26px;
  height: 26px;
  margin-top: -9px;
  border: 3px solid var(--semi-azul);
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(10, 16, 38, 0.25);
  -webkit-appearance: none;
  appearance: none;
}

.semi-rango::-moz-range-track {
  height: 8px;
  border-radius: 999px;
  background: #DCE3F1;
}

.semi-rango::-moz-range-progress {
  height: 8px;
  border-radius: 999px;
  background: var(--semi-azul);
}

.semi-rango::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border: 3px solid var(--semi-azul);
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(10, 16, 38, 0.25);
}

.semi-rango__marcas {
  display: flex;
  justify-content: space-between;
  margin-top: -2px;
  color: var(--semi-suave);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.semi-resumen {
  margin: 16px 0 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: #F5F8FF;
  color: var(--semi-texto);
  font-size: 0.86rem;
}

.semi-acciones {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 10px;
  margin-top: 18px;
}

.semi-boton {
  min-height: 48px;
  padding: 0 18px;
  border: 1.5px solid transparent;
  border-radius: 999px;
  font-weight: 750;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.semi-boton:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.semi-boton--principal {
  background: var(--semi-azul);
  color: #FFFFFF;
}

.semi-boton--principal:not(:disabled):hover {
  background: var(--semi-azul-oscuro);
}

.semi-boton--secundario {
  border-color: var(--semi-borde-fuerte);
  background: #FFFFFF;
  color: var(--semi-tinta);
}

.semi-boton--secundario:not(:disabled):hover {
  border-color: var(--semi-azul);
  color: var(--semi-azul);
}

/* ---------- Vistas previas ---------- */

.semi-vistas {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.semi-vista {
  min-width: 0;
  margin: 0;
}

.semi-vista__titulo {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--semi-tinta);
  font-size: 0.86rem;
  font-weight: 750;
}

.semi-vista__titulo span {
  color: var(--semi-suave);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.semi-lienzo {
  display: grid;
  place-items: center;
  min-height: 240px;
  padding: 14px;
  border: 1px solid var(--semi-borde);
  border-radius: 12px;
  overflow: hidden;
  background-color: #FBFCFE;
  background-image:
    linear-gradient(45deg, #E8EDF7 25%, transparent 25%),
    linear-gradient(-45deg, #E8EDF7 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #E8EDF7 75%),
    linear-gradient(-45deg, transparent 75%, #E8EDF7 75%);
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}

.semi-lienzo--resultado {
  border-color: #B9C8F5;
  box-shadow: inset 0 0 0 1px rgba(11, 61, 255, 0.08);
}

.semi-imagen {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 480px;
  margin-inline: auto;
}

.semi-vacio {
  max-width: 24ch;
  margin: 0;
  color: #64708C;
  font-size: 0.84rem;
  text-align: center;
}

.semi-vista__pie {
  margin: 8px 0 0;
  color: var(--semi-suave);
  font-size: 0.76rem;
  overflow-wrap: anywhere;
}

.semi-nota {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--semi-borde);
  color: var(--semi-suave);
  font-size: 0.78rem;
}

/* ---------- Información ---------- */

.semi-info {
  margin-top: 24px;
  padding: 28px 24px;
  border: 1px solid var(--semi-borde);
  border-radius: var(--semi-radio);
  background: rgba(255, 255, 255, 0.72);
}

.semi-info h2 {
  margin-bottom: 18px;
  color: var(--semi-tinta);
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.semi-info__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 28px;
}

.semi-info h3 {
  margin-bottom: 6px;
  color: var(--semi-tinta);
  font-size: 0.92rem;
}

.semi-info p {
  margin-bottom: 0;
  color: var(--semi-suave);
  font-size: 0.84rem;
}

.semi-pie {
  padding: 0 24px 36px;
  color: var(--semi-suave);
  font-size: 0.76rem;
}

.semi-pie p {
  margin-bottom: 0;
}

/* ---------- Adaptación a pantallas pequeñas ---------- */

@media (max-width: 960px) {
  .semi-tablero {
    grid-template-columns: minmax(0, 1fr);
  }

  .semi-columna {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (max-width: 700px) {
  .semi-cabecera {
    padding: 18px 18px 48px;
  }

  .semi-cabecera__texto {
    margin-top: 34px;
  }

  .semi-principal {
    padding: 0 16px 32px;
  }

  .semi-columna,
  .semi-vistas,
  .semi-info__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .semi-panel {
    padding: 20px;
  }

  .semi-lienzo {
    min-height: 210px;
  }

  .semi-vista__titulo {
    margin-top: 4px;
  }
}

@media (max-width: 420px) {
  .semi-acciones {
    grid-template-columns: minmax(0, 1fr);
  }

  .semi-meta__fila {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .semi-volver {
    font-size: 0.82rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}