/* ============================================================
   VIDREA — Componentes de cristal (liquid glass)

   REGLA DE ORO: todo panel translúcido lleva PRIMERO un color
   sólido de respaldo (--glass-solid). Solo cuando el navegador
   confirma soporte de backdrop-filter cambiamos ese fondo por la
   versión translúcida. Así el texto nunca se queda sin contraste.
   ============================================================ */

/* ------------------------------------------------------------
   1. Panel base
   ------------------------------------------------------------ */
.glass-panel {
  position: relative;
  isolation: isolate;
  border-radius: var(--radius-lg);
  /* Respaldo SÓLIDO (se ve si no hay soporte de desenfoque) */
  background-color: var(--glass-solid);
  border: 1px solid var(--glass-border);
  /* Sombra doble: contacto + difusa, más luz interior */
  box-shadow: var(--shadow-glass), var(--shadow-inset);
  color: var(--text-2);
}

/* Filo exterior fino: despega el panel del fondo sin engordar el borde */
.glass-panel::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid var(--glass-edge);
  pointer-events: none;
  z-index: -1;
}

/* Reflejo superior: barrido de luz muy sutil, como en vidrio real */
.glass-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(
      160deg,
      var(--glass-sheen) 0%,
      rgba(255, 255, 255, 0) 34%,
      rgba(255, 255, 255, 0) 62%,
      var(--glass-tint) 100%
    );
  opacity: 0.5;
  pointer-events: none;
  z-index: -1;
}

/* Activación del cristal real solo si el navegador lo soporta */
@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .glass-panel {
    background-color: var(--glass-bg);
    /* Velo de color sólido bajo el cristal. En el tema claro es
       transparente y no cambia nada; en el oscuro iguala el tono de todos
       los paneles, que si no toman el color del trozo de fondo que les
       toca detrás y salen unos azulados y otros marrones. */
    background-image: linear-gradient(var(--glass-veil), var(--glass-veil));
    -webkit-backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--blur-md)) saturate(var(--glass-saturate));
  }
  .glass-panel--strong { background-color: var(--glass-bg-strong); }
  .glass-panel--soft { background-color: var(--glass-bg-soft); }
}

/* Variantes de densidad (fondo sólido de respaldo incluido) */
.glass-panel--strong {
  background-color: var(--glass-solid-strong);
  box-shadow: var(--shadow-lift), var(--shadow-inset);
}
.glass-panel--soft {
  background-color: var(--glass-solid);
}

/* Variantes de forma */
.glass-panel--sm { border-radius: var(--radius-md); }
.glass-panel--xl { border-radius: var(--radius-xl); }
.glass-panel--pill { border-radius: var(--radius-pill); }

/* Panel interactivo (tarjetas clicables) */
.glass-panel--interactive {
  transition:
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}
.glass-panel--interactive:hover,
.glass-panel--interactive:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift), var(--shadow-inset);
  border-color: var(--accent-soft);
}

/* ------------------------------------------------------------
   2. Botones de cristal
   ------------------------------------------------------------ */
.glass-button {
  --btn-py: 0.72em;
  --btn-px: 1.5em;
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--btn-py) var(--btn-px);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-snug);
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  background-color: var(--glass-solid);
  color: var(--text-1);
  box-shadow: var(--shadow-glass), var(--shadow-inset);
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
}

@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .glass-button {
    background-color: var(--glass-bg-strong);
    -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
  }
}

.glass-button::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    170deg,
    var(--glass-sheen) 0%,
    rgba(255, 255, 255, 0) 52%
  );
  opacity: 0.55;
  pointer-events: none;
  z-index: -1;
}

.glass-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift), var(--shadow-inset);
}
.glass-button:active { transform: translateY(0); }

/* Botón principal: acento sólido (máximo contraste, siempre legible) */
.glass-button--primary {
  background-color: var(--accent);
  border-color: transparent;
  color: var(--accent-contrast);
  box-shadow: var(--shadow-lift), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.glass-button--primary:hover { background-color: var(--accent-strong); }
.glass-button--primary::before { opacity: 0.28; }

/* Botón fantasma: solo contorno. Usa --border-strong porque este botón
   suele ir sobre paneles claros, donde un borde blanco desaparecería. */
.glass-button--ghost {
  background-color: transparent;
  border-color: var(--border-strong);
  box-shadow: none;
  color: var(--text-1);
}
.glass-button--ghost::before { opacity: 0; }
.glass-button--ghost:hover {
  background-color: var(--accent-soft);
  border-color: var(--accent);
}

/* Tamaños */
.glass-button--lg { --btn-py: 0.95em; --btn-px: 1.9em; font-size: var(--fs-base); }
.glass-button--icon {
  --btn-py: 0;
  --btn-px: 0;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 auto;
}

/* ------------------------------------------------------------
   3. Píldoras / etiquetas de cristal
   ------------------------------------------------------------ */
.glass-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.42em 0.95em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  background-color: var(--glass-solid);
  box-shadow: var(--shadow-inset);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-2);
}
@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .glass-chip {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--blur-sm)) saturate(var(--glass-saturate));
  }
}
.glass-chip__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* ------------------------------------------------------------
   4. Barra de cristal (cabecera flotante)
   ------------------------------------------------------------ */
.glass-bar {
  position: relative;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  background-color: var(--glass-solid);
  box-shadow: var(--shadow-glass), var(--shadow-inset);
}
@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .glass-bar {
    background-color: var(--glass-bg-strong);
    /* La cabecera cruza todo el ancho del lienzo: sin velo se veía violeta
       por la izquierda y casi negra por la derecha. */
    background-image: linear-gradient(var(--glass-veil), var(--glass-veil));
    -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
    backdrop-filter: blur(var(--blur-lg)) saturate(var(--glass-saturate));
  }
}

/* ------------------------------------------------------------
   5. Campo de formulario de cristal
   ------------------------------------------------------------ */
.glass-field {
  width: 100%;
  padding: 0.8em 1.1em;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--text-1);
  border-radius: var(--radius-pill);
  /* --border-strong y no --glass-border: los campos suelen ir sobre un panel
     claro, donde un borde blanco desaparece y no se ve donde escribir. */
  border: 1px solid var(--border-strong);
  background-color: var(--glass-solid);
  box-shadow: var(--shadow-inset);
  transition: border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}
@supports ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))) {
  .glass-field {
    background-color: var(--glass-bg);
    -webkit-backdrop-filter: blur(var(--blur-sm));
    backdrop-filter: blur(var(--blur-sm));
  }
}
.glass-field::placeholder { color: var(--text-3); }
.glass-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--shadow-inset), 0 0 0 3px var(--accent-soft);
}

/* ------------------------------------------------------------
   6. Divisor de cristal
   ------------------------------------------------------------ */
.glass-divider {
  height: 1px;
  border: 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--glass-border) 18%,
    var(--glass-border) 82%,
    transparent
  );
}