/*
  sistema.css — hoja compartida por las seis fichas de sistema de diseno.

  No define ni un color ni una fuente: solo estructura. Cada ficha declara sus
  propios tokens en un :root y la pagina se pinta con el sistema que documenta.
  Esa es la prueba de que el sistema funciona.

  Tokens que espera cada ficha:
    --sd-bg  --sd-surface  --sd-surface-2  --sd-ink  --sd-muted
    --sd-accent  --sd-accent-2  --sd-line  --sd-radius  --sd-font  --sd-display
*/

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

body {
  margin: 0;
  background: var(--sd-bg);
  color: var(--sd-ink);
  font-family: var(--sd-font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.sd-contenedor {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 clamp(1.15rem, 4vw, 3rem);
}

/* ---------- Cabecera ---------- */
.sd-cabecera {
  padding: clamp(2rem, 6vh, 4rem) 0 clamp(1.5rem, 4vh, 2.5rem);
  border-bottom: 1px solid var(--sd-line);
}

.sd-migas {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: clamp(1.5rem, 4vh, 2.5rem);
  color: var(--sd-muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.sd-migas:hover,
.sd-migas:focus-visible {
  color: var(--sd-accent);
}

.sd-etiqueta {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--sd-accent) 16%, transparent);
  color: var(--sd-accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sd-titulo {
  margin: 0 0 0.5rem;
  font-family: var(--sd-display, var(--sd-font));
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.sd-bajada {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--sd-muted);
}

/* ---------- Secciones ---------- */
.sd-seccion {
  padding: clamp(2rem, 6vh, 3.5rem) 0;
  border-bottom: 1px solid var(--sd-line);
}

.sd-seccion:last-of-type {
  border-bottom: 0;
}

.sd-seccion > h2 {
  margin: 0 0 0.35rem;
  font-family: var(--sd-display, var(--sd-font));
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.sd-seccion > h2 + p {
  margin: 0 0 1.75rem;
  max-width: 58ch;
  color: var(--sd-muted);
}

.sd-seccion h3 {
  margin: 2rem 0 0.85rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--sd-muted);
}

/* ---------- Paleta ---------- */
.sd-paleta {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sd-color {
  border: 1px solid var(--sd-line);
  border-radius: var(--sd-radius);
  overflow: hidden;
  background: var(--sd-surface);
}

.sd-color-muestra {
  height: 5.5rem;
}

.sd-color-datos {
  padding: 0.65rem 0.75rem 0.8rem;
}

.sd-color-nombre {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
}

.sd-color-hex {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--sd-muted);
  text-transform: uppercase;
}

.sd-color-rol {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  color: var(--sd-muted);
}

/* ---------- Tipografia ---------- */
.sd-tipo {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sd-tipo li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--sd-line);
}

.sd-tipo li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.sd-tipo dt,
.sd-tipo-meta {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.76rem;
  color: var(--sd-muted);
}

.sd-muestra-display {
  font-family: var(--sd-display, var(--sd-font));
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  line-height: 1.1;
}

.sd-muestra-titulo {
  font-family: var(--sd-display, var(--sd-font));
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  line-height: 1.2;
}

.sd-muestra-cuerpo {
  font-size: 1rem;
}

.sd-muestra-pie {
  font-size: 0.82rem;
  color: var(--sd-muted);
}

/* ---------- Componentes ---------- */
.sd-lienzo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  padding: clamp(1.1rem, 2.5vw, 1.75rem);
  border: 1px solid var(--sd-line);
  border-radius: var(--sd-radius);
  background: var(--sd-surface);
}

.sd-btn {
  padding: 0.72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--sd-radius-btn, var(--sd-radius));
  background: var(--sd-accent-solid, var(--sd-accent));
  color: var(--sd-on-accent, var(--sd-bg));
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.sd-btn:hover {
  filter: brightness(1.08);
}

.sd-btn--linea {
  background: transparent;
  border-color: var(--sd-accent);
  color: var(--sd-accent-text, var(--sd-accent));
}

.sd-btn--suave {
  background: color-mix(in srgb, var(--sd-accent) 14%, transparent);
  /* Sobre relleno tintado ni el paso de texto de la rampa llega siempre a
     4,5:1, asi que se empuja un 20 % hacia la tinta. Sirve igual en banda
     clara (oscurece) que en oscura (aclara). */
  color: color-mix(in srgb, var(--sd-accent-text, var(--sd-accent)) 80%, var(--sd-ink));
}

.sd-btn--fantasma {
  background: transparent;
  color: var(--sd-muted);
}

.sd-btn--fantasma:hover {
  color: var(--sd-ink);
}

.sd-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  filter: none;
}

.sd-check {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
}

.sd-check input {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--sd-accent);
  cursor: pointer;
}

.sd-campo {
  display: grid;
  gap: 0.35rem;
  min-width: 15rem;
}

.sd-campo span {
  font-size: 0.8rem;
  color: var(--sd-muted);
}

.sd-campo input {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--sd-line);
  border-radius: var(--sd-radius);
  background: var(--sd-surface-2, var(--sd-bg));
  color: var(--sd-ink);
  font: inherit;
}

.sd-campo input:focus {
  outline: 2px solid var(--sd-accent);
  outline-offset: 1px;
}

.sd-insignia {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--sd-accent-2, var(--sd-accent)) 18%, transparent);
  color: var(--sd-accent-2, var(--sd-accent));
  font-size: 0.76rem;
  font-weight: 700;
}

.sd-iconos {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--sd-accent);
}

.sd-iconos svg {
  width: 1.9rem;
  height: 1.9rem;
}

.sd-ficha {
  max-width: 22rem;
  padding: 1.1rem;
  border: 1px solid var(--sd-line);
  border-radius: var(--sd-radius);
  background: var(--sd-surface-2, var(--sd-surface));
}

.sd-ficha h4 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
}

.sd-ficha p {
  margin: 0 0 0.9rem;
  font-size: 0.9rem;
  color: var(--sd-muted);
}

/* ---------- Pie ---------- */
.sd-pie {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  padding: clamp(2rem, 5vh, 3rem) 0 clamp(3rem, 8vh, 5rem);
}

.sd-enlace {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.72rem 1.25rem;
  border: 1px solid var(--sd-line);
  border-radius: 999px;
  color: var(--sd-ink);
  text-decoration: none;
  font-weight: 500;
}

.sd-enlace:hover,
.sd-enlace:focus-visible {
  border-color: var(--sd-accent);
  color: var(--sd-accent);
}

:focus-visible {
  outline: 2px solid var(--sd-accent);
  outline-offset: 2px;
}

@media (max-width: 540px) {
  .sd-tipo li {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* ============================================================
   MUESTRARIO DE COLOR
   Cada muestra es un boton real: pulsarla copia el hexadecimal.
   El color del texto (--t) no se calcula aqui: viene decidido en el
   HTML, eligiendo entre negro y blanco el que mas contraste da sobre
   ese color concreto. Asi el nombre se lee siempre.
   ============================================================ */
.pl-rejilla {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pl-color {
  display: grid;
  align-content: start;
  gap: 0.15rem;
  width: 100%;
  min-height: 8.5rem;
  padding: 0.9rem 0.95rem;
  border: 0;
  border-radius: var(--sd-radius);
  background: var(--c);
  color: var(--t);
  font: inherit;
  text-align: left;
  cursor: pointer;
  position: relative;
  box-shadow: inset 0 0 0 1px rgb(128 128 128 / 0.22);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.pl-color:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 0 0 1px rgb(128 128 128 / 0.35), 0 10px 24px rgb(0 0 0 / 0.28);
}

.pl-color:focus-visible {
  outline: 3px solid var(--sd-accent);
  outline-offset: 2px;
}

.pl-color__nombre {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.15;
}

.pl-color__hex {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}

.pl-color__hex > span {
  opacity: 0.62;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
}

.pl-color__rol {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.75rem;
  line-height: 1.35;
  opacity: 0.78;
}

/* Valor leido de una captura: conviene confirmarlo. */
.pl-revisar {
  display: inline-grid;
  place-items: center;
  width: 1.05em;
  height: 1.05em;
  margin-left: 0.25em;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-size: 0.7em;
  font-style: normal;
  opacity: 0.7;
  vertical-align: 0.1em;
}

/* Aviso de copiado: aparece sobre la propia muestra. */
.pl-color::after {
  content: "Copiado";
  position: absolute;
  inset: auto 0.55rem 0.55rem auto;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--t);
  color: var(--c);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
}

.pl-color.esta-copiado::after {
  opacity: 1;
  transform: none;
}

/* ---------- Agrupaciones ---------- */
.pl-seccion {
  margin: 2.5rem 0 0.35rem;
  font-family: var(--sd-display, var(--sd-font));
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: 700;
}

.pl-intro {
  margin: 0 0 1.5rem;
  max-width: 58ch;
  color: var(--sd-muted);
}

.pl-grupo {
  margin-bottom: 1.75rem;
}

.pl-grupo__cab {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.pl-grupo__cab h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.pl-grupo__ver,
.pl-tono {
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.pl-grupo__ver {
  color: var(--sd-accent);
  text-decoration: none;
}

.pl-tono {
  color: var(--sd-muted);
}

.pl-grupo__nota {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--sd-muted);
}

.pl-rejilla--suelta .pl-color {
  min-height: 7rem;
}

.pl-indice {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.pl-indice a {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--sd-line);
  border-radius: 999px;
  color: var(--sd-ink);
  text-decoration: none;
  font-size: 0.82rem;
}

.pl-indice a:hover,
.pl-indice a:focus-visible {
  border-color: var(--sd-accent);
  color: var(--sd-accent);
}

/* Region viva para anunciar el copiado sin mostrar nada en pantalla. */
.cine-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 480px) {
  .pl-rejilla { grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr)); }
  .pl-color { min-height: 7.5rem; padding: 0.7rem 0.75rem; }
  .pl-color__nombre { font-size: 0.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  .pl-color,
  .pl-color::after { transition: none; }
  .pl-color:hover { transform: none; }
}

.pl-color__hex b {
  font-weight: 700;
  /* Se puede seleccionar para copiar a mano si el portapapeles esta bloqueado. */
  user-select: text;
}