/* =========================================================================
   E.T.C. "Andrés Bello" — S.I.G.A. (Sistema Integral de Gestión Académica)
   Página única centrada en un solo pantallazo sobre el escenario 3D S·I·G·A.
   ========================================================================= */

.sg-app {
  --sg-accent: var(--accent);
  --sg-gold: #8c6514;
}
[data-theme="dark"] .sg-app {
  --sg-accent: var(--accent-bright);
  --sg-gold: var(--gold);
}

.sg-sr-title {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* =========================================================================
   ESCENA ÚNICA CENTRADA
   ========================================================================= */
.sg-hero {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  overflow-x: hidden;
  background: var(--background);
  display: flex;
  flex-direction: column;
  cursor: grab;
  user-select: none;
}
.sg-hero.is-dragging { cursor: grabbing; }

.sg-stage-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  touch-action: pan-y;
}

.sg-hero-vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(
    ellipse 88% 68% at 50% 34%,
    transparent 24%,
    color-mix(in srgb, var(--background) 78%, transparent) 100%
  );
}

.sg-shell {
  position: relative;
  z-index: 2;
  flex: 1;
  width: min(74rem, 100%);
  margin-inline: auto;
  padding: clamp(0.85rem, 2.2svh, 1.45rem) clamp(1rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  pointer-events: none;
}

/* Barra superior mínima: únicamente "volver al inicio" + tema */
.sg-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  pointer-events: auto;
}

.sg-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.48rem 0.88rem;
  border: 1px solid var(--border-muted);
  background: color-mix(in srgb, var(--background) 84%, transparent);
  backdrop-filter: blur(8px);
  font-size: var(--type-eyebrow);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--foreground);
  transition: border-color var(--duration-fast), color var(--duration-fast);
}
.sg-back-link:hover {
  border-color: var(--sg-accent);
  color: var(--sg-accent);
}

/* Composición centrada vertical y horizontalmente */
.sg-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: clamp(0.55rem, 1.5svh, 1rem);
  padding-block: clamp(0.25rem, 1svh, 0.75rem);
}

/* Espacio transparente donde flota la escultura 3D S·I·G·A */
.sg-stage-slot {
  position: relative;
  width: min(46rem, 100%);
  height: clamp(10.5rem, 28svh, 17.5rem);
  flex: none;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  pointer-events: none;
}

.sg-stage-hint {
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--foreground-muted);
  opacity: 0.72;
}

/* Identidad y estado "En construcción" */
.sg-identity {
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.34rem;
  user-select: text;
}

.sg-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--gold) 52%, var(--border-muted));
  background: color-mix(in srgb, var(--gold) 12%, var(--background));
  color: var(--sg-gold);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.sg-status-dot {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--gold) 55%, transparent);
  animation: sg-pulse 2.2s ease-out infinite;
}
@keyframes sg-pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--gold) 60%, transparent); }
  70% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--gold) 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--gold) 0%, transparent); }
}
@media (prefers-reduced-motion: reduce) {
  .sg-status-dot { animation: none; }
}

.sg-full-name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.38rem, 2.35vw, 1.98rem);
  line-height: 0.96;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--foreground);
}

.sg-school-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sg-accent);
}

/* Tarjeta poética central */
.sg-poem-card {
  position: relative;
  pointer-events: auto;
  user-select: text;
  width: min(44rem, 100%);
  padding: clamp(0.8rem, 1.7svh, 1.15rem) clamp(1rem, 2.4vw, 1.65rem);
  border: 1px solid var(--border-muted);
  background: color-mix(in srgb, var(--background) 82%, transparent);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.48rem;
}
[data-theme="dark"] .sg-poem-card {
  background: color-mix(in srgb, var(--surface-black) 78%, transparent);
}

.sg-poem-verse {
  font-family: var(--font-text);
  font-size: clamp(0.86rem, 1.05vw, 0.98rem);
  line-height: 1.56;
  font-style: italic;
  color: var(--foreground);
}

.sg-poem-sign {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--foreground-muted);
}

/* Patrocinantes centrados — marquesina continua de izquierda a derecha */
.sg-sponsors-wrap {
  position: relative;
  z-index: 5;
  pointer-events: none;
  width: min(56rem, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
}

.sg-sponsors-kicker {
  pointer-events: auto;
  user-select: text;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--foreground-muted);
}

.sg-marquee-viewport {
  position: relative;
  width: 100%;
  padding-top: 6.8rem;
  margin-top: -6.8rem;
  padding-bottom: 0.35rem;
  overflow-x: clip;
  overflow-y: visible;
  pointer-events: none;
}

/* Desvanecimiento lateral en los bordes del carrusel sin tapar tooltips superiores */
.sg-marquee-viewport::before,
.sg-marquee-viewport::after {
  content: "";
  position: absolute;
  bottom: 0.15rem;
  width: clamp(2rem, 8vw, 4.5rem);
  height: 3.35rem;
  z-index: 3;
  pointer-events: none;
}
.sg-marquee-viewport::before {
  left: 0;
  background: linear-gradient(to right, var(--background), transparent);
}
.sg-marquee-viewport::after {
  right: 0;
  background: linear-gradient(to left, var(--background), transparent);
}

.sg-marquee-track {
  display: flex;
  width: max-content;
  pointer-events: auto;
  animation: sg-marquee-ltr 34s linear infinite;
}
.sg-marquee-track:hover,
.sg-marquee-viewport:focus-within .sg-marquee-track {
  animation-play-state: paused;
}

@keyframes sg-marquee-ltr {
  from { transform: translate3d(-50%, 0, 0); }
  to { transform: translate3d(0, 0, 0); }
}

.sg-marquee-group {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding-right: 0.9rem;
}

.sg-sponsor-pill {
  position: relative;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.56rem 1.05rem;
  border: 1px solid var(--border-muted);
  background: color-mix(in srgb, var(--surface-muted) 78%, var(--background));
  backdrop-filter: blur(8px);
  color: var(--foreground);
  text-decoration: none;
  cursor: pointer;
  transition: border-color var(--duration-fast), background var(--duration-fast), transform var(--duration-fast);
}
.sg-sponsor-pill:hover,
.sg-sponsor-pill:focus-visible {
  border-color: var(--sg-accent);
  background: color-mix(in srgb, var(--sg-accent) 11%, var(--background));
  transform: translateY(-2px);
  z-index: 8;
  outline: none;
}

.sg-sponsor-mark {
  width: 1.35rem;
  height: 1.35rem;
  display: grid;
  place-items: center;
  color: var(--foreground);
  transition: color var(--duration-fast);
}
.sg-sponsor-pill:hover .sg-sponsor-mark,
.sg-sponsor-pill:focus-visible .sg-sponsor-mark {
  color: var(--sg-accent);
}
.sg-sponsor-mark svg {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
}
.sg-sponsor-mark img {
  width: 1.3rem;
  height: 1.3rem;
  object-fit: contain;
}
.sg-sponsor-mono {
  font-family: var(--font-figure);
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--sg-accent);
}

.sg-sponsor-name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  line-height: 0.95;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Pequeña información emergente al pasar el cursor encima */
.sg-sponsor-tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.6rem);
  width: 14.5rem;
  padding: 0.65rem 0.8rem;
  text-align: left;
  border: 1px solid var(--sg-accent);
  background: var(--background);
  color: var(--foreground);
  box-shadow: 0 12px 28px rgb(9 10 11 / 0.16);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 6px);
  transition: opacity 160ms var(--ease-entrance), transform 160ms var(--ease-entrance), visibility 160ms;
  z-index: 12;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  white-space: normal;
}
[data-theme="dark"] .sg-sponsor-tip {
  background: var(--surface-black);
  color: var(--foreground-on-dark);
  box-shadow: 0 14px 30px rgb(0 0 0 / 0.55);
}
.sg-sponsor-tip::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  width: 0.5rem;
  height: 0.5rem;
  background: inherit;
  border-right: 1px solid var(--sg-accent);
  border-bottom: 1px solid var(--sg-accent);
  transform: translate(-50%, -50%) rotate(45deg);
}
.sg-sponsor-pill:hover .sg-sponsor-tip,
.sg-sponsor-pill:focus-visible .sg-sponsor-tip {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.sg-sponsor-tip-cat {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sg-accent);
}
.sg-sponsor-tip-desc {
  font-family: var(--font-text);
  font-size: 0.74rem;
  line-height: 1.38;
  color: var(--foreground-muted);
}
[data-theme="dark"] .sg-sponsor-tip-desc {
  color: var(--foreground-on-dark-muted);
}
.sg-sponsor-tip-cta {
  margin-top: 0.15rem;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sg-accent);
}

@media (prefers-reduced-motion: reduce) {
  .sg-marquee-viewport { padding-top: 5.5rem; margin-top: -5.5rem; }
  .sg-marquee-viewport::before,
  .sg-marquee-viewport::after,
  .sg-marquee-clone { display: none; }
  .sg-marquee-track {
    width: 100%;
    animation: none;
    justify-content: center;
  }
  .sg-marquee-group {
    padding-right: 0;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 639px) {
  .sg-stage-slot { height: clamp(9.5rem, 24svh, 13.5rem); }
}