/**
 * Artistic ribbon performance (GSAP) + satin metal logo
 */

.hero-background {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg, 0);
  pointer-events: none;
  overflow: hidden;
}

.ribbon-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  overflow: visible;
}

.ribbon-stage.is-gone {
  opacity: 0;
  transition: opacity 0.7s ease;
  pointer-events: none;
}

.perf-ribbon {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.perf-ribbon--lead {
  stroke: url('#ribbonGoldA');
  stroke-width: 11;
  filter: url('#ribbonGlow');
}

.perf-ribbon--follow-a {
  stroke: url('#ribbonGoldB');
  stroke-width: 9;
  filter: url('#ribbonGlow');
  opacity: 0.9;
}

.perf-ribbon--follow-b {
  stroke: url('#ribbonGoldC');
  stroke-width: 7.5;
  filter: url('#ribbonGlow');
  opacity: 0.82;
}

.logo-mount {
  position: absolute;
  left: 48%;
  top: 64%;
  width: min(42vw, 380px, 68vh);
  height: auto;
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
}

.logo-mount::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 125%;
  height: 125%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(245, 235, 192, 0.24) 0%,
    rgba(212, 196, 138, 0.08) 45%,
    transparent 72%
  );
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.logo-mount.is-hero-glow::before {
  opacity: 1;
}

.princess-logo {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  opacity: 0;
}

.princess-logo.is-materialized {
  opacity: 0.64;
  transition: opacity 1.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-path {
  fill: none;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-path--circle {
  stroke: url('#circleMetal');
  stroke-width: 6;
}

.logo-path--crown,
.logo-path--center,
.logo-path--accent {
  stroke: url('#brushedGold');
}

.logo-path--crown {
  stroke-width: 13;
}

.logo-path--center,
.logo-path--accent {
  stroke-width: 12;
}

.logo-path--shimmer {
  stroke: url('#metalShimmer');
  stroke-width: 10;
}

.logo-shimmer-layer {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 900px) {
  .logo-mount {
    left: 50%;
    width: min(58vw, 350px, 64vh);
  }

  /* Thinner ribbons + no expensive SVG blur filter on phones */
  .perf-ribbon {
    filter: none !important;
  }

  .perf-ribbon--lead {
    stroke-width: 6.5;
  }

  .perf-ribbon--follow-a {
    stroke-width: 5;
  }

  .perf-ribbon--follow-b {
    display: none;
  }

  /* Slightly lighter crown stroke weight on mobile */
  .logo-path--circle {
    stroke-width: 4.5;
  }

  .logo-path--crown {
    stroke-width: 9;
  }

  .logo-path--center,
  .logo-path--accent {
    stroke-width: 8;
  }

  .logo-path--shimmer {
    stroke-width: 7;
  }

  .logo-mount::before {
    width: 110%;
    height: 110%;
    background: radial-gradient(
      circle,
      rgba(245, 235, 192, 0.16) 0%,
      rgba(212, 196, 138, 0.05) 42%,
      transparent 68%
    );
  }
}

@media (prefers-reduced-motion: reduce) {
  .ribbon-stage {
    display: none;
  }

  .princess-logo {
    opacity: 0.64;
    transition: none;
  }

  .logo-shimmer-layer {
    display: none;
  }
}