/* ============================================================
   SIGGA · Splash screen de primera carga (Grupo Assista)
   Autocontenido · sin peticiones de red · CSS puro.
   Todo va bajo #sigga-loader; App.razor lo muestra solo cuando
   localStorage no tiene la marca de "app ya cargada".
   ============================================================ */

#sigga-loader {
  /* paleta Assista */
  --red:       #B81E26;
  --red-dark:  #8B1620;
  --pink:      #F2D7DA;
  --pink-pale: #FBE9EA;
  --ink-900:   #1A2332;
  --ink-500:   #6B7280;
  --paper:     #FFFFFF;

  position: fixed;
  inset: 0;
  z-index: 2147483647;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  font-family: 'Montserrat', 'Segoe UI', system-ui, 'Calibri', Arial, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* el atributo hidden debe ganar al display:flex de arriba */
#sigga-loader[hidden] { display: none; }

/* fundido de salida cuando la app ya está montada */
#sigga-loader.sig-hide {
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}

/* barra roja de firma, arriba */
#sigga-loader .sig-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: var(--red);
}

/* círculos decorativos pastel (esquinas, nunca compiten) */
#sigga-loader .deco {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}
#sigga-loader .d1 { width: 260px; height: 260px; background: var(--pink-pale); top: -90px; right: -70px; animation: sig-drift 9s ease-in-out infinite; }
#sigga-loader .d2 { width: 150px; height: 150px; background: var(--pink);      top: 40px;  right: 70px;  animation: sig-drift 11s ease-in-out infinite reverse; }
#sigga-loader .d3 { width: 190px; height: 190px; background: var(--pink-pale); bottom: -80px; left: -60px; animation: sig-drift 10s ease-in-out infinite; }
#sigga-loader .d4 { width: 90px;  height: 90px;  background: var(--pink);      bottom: 60px;  left: 60px;  animation: sig-drift 12s ease-in-out infinite reverse; }

@keyframes sig-drift {
  0%,100% { transform: translate(0,0) scale(1); }
  50%     { transform: translate(-14px, 12px) scale(1.06); }
}

/* bloque central */
#sigga-loader .core {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

/* logotipo oficial del grupo */
#sigga-loader .brand-logo {
  display: block;
  width: clamp(150px, 34vw, 210px);
  height: auto;
  margin: 0 auto 30px;
  opacity: 0;
  animation: sig-fade 0.6s ease-out 0.05s forwards;
}

/* SIGGA — protagonista */
#sigga-loader .sigga {
  display: flex;
  justify-content: center;
  gap: 0.02em;
  font-weight: 800;
  font-size: clamp(58px, 15vw, 128px);
  line-height: 0.9;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
#sigga-loader .sigga span {
  display: inline-block;
  transform: translateY(18px);
  opacity: 0;
  animation: sig-rise 0.62s cubic-bezier(.2,.8,.25,1) forwards;
}
#sigga-loader .sigga span:nth-child(1) { animation-delay: 0.18s; }
#sigga-loader .sigga span:nth-child(2) { animation-delay: 0.28s; }
#sigga-loader .sigga span:nth-child(3) { animation-delay: 0.38s; }
#sigga-loader .sigga span:nth-child(4) { animation-delay: 0.48s; }
#sigga-loader .sigga span:nth-child(5) { animation-delay: 0.58s; color: var(--red); } /* última A en rojo */

/* subtítulo — significado */
#sigga-loader .tagline {
  margin-top: 20px;
  font-size: clamp(12px, 2.4vw, 15px);
  font-weight: 500;
  color: var(--ink-500);
  letter-spacing: 0.01em;
  opacity: 0;
  animation: sig-fade 0.7s ease-out 0.7s forwards;
}
#sigga-loader .tagline b { color: var(--red); font-weight: 700; }

/* barra de carga indeterminada */
#sigga-loader .track {
  position: relative;
  width: min(220px, 62vw);
  height: 4px;
  margin: 40px auto 0;
  background: var(--pink-pale);
  border-radius: 999px;
  overflow: hidden;
  opacity: 0;
  animation: sig-fade 0.6s ease-out 0.9s forwards;
}
#sigga-loader .track::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 42%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red), var(--red-dark));
  animation: sig-sweep 1.35s cubic-bezier(.65,0,.35,1) infinite;
}

@keyframes sig-sweep {
  0%   { left: -45%; }
  100% { left: 105%; }
}
@keyframes sig-fade { to { opacity: 1; } }
@keyframes sig-rise { to { transform: translateY(0); opacity: 1; } }

/* accesibilidad: sin movimiento */
@media (prefers-reduced-motion: reduce) {
  #sigga-loader .deco,
  #sigga-loader .track::before { animation: none; }
  #sigga-loader .brand-logo,
  #sigga-loader .sigga span,
  #sigga-loader .tagline,
  #sigga-loader .track { animation: none; opacity: 1; transform: none; }
}