/* ZionStar — "Ascent" signature site effects.
   Backgrounds, glass, peak motif, scroll-reveal & micro-interaction utilities.
   Load AFTER colors_and_type.css. */

/* ---------------- Backgrounds ---------------- */
.zs-canvas {                       /* deep dawn-summit canvas */
  background: var(--canvas);
  position: relative;
  isolation: isolate;
  overflow: clip;
}
.zs-aurora::before {               /* drifting aurora light */
  content: "";
  position: absolute; inset: -20% -10% -10%;
  background: var(--aurora);
  filter: saturate(1.15);
  z-index: -2;
  animation: zs-aurora-drift 18s var(--ease-out) infinite;
}
.zs-grid::after {                  /* topographic line grid, faded */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 72%);
  z-index: -1; pointer-events: none;
}
.zs-grid-light::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(100% 70% at 80% 0%, #000 0%, transparent 70%);
  mask-image: radial-gradient(100% 70% at 80% 0%, #000 0%, transparent 70%);
  z-index: 0; pointer-events: none;
}
.zs-mesh { background-color: var(--white); background-image: var(--mesh-light); }

/* Signature peak/summit watermark (CSS-drawn chevron from the logo). */
.zs-peak {
  position: absolute; pointer-events: none; z-index: -1;
  background: linear-gradient(180deg, rgba(87,199,255,.16), rgba(31,97,240,0));
  clip-path: polygon(50% 0, 100% 100%, 80% 100%, 50% 28%, 20% 100%, 0 100%);
}

/* Glowing orb. */
.zs-orb { position: absolute; border-radius: 50%; filter: blur(60px); z-index: -1; opacity: .8; }

/* ---------------- Glass ---------------- */
.zs-glass {
  background: var(--glass-dark-bg);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  border: 1px solid var(--glass-dark-bd);
  box-shadow: 0 24px 70px -20px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.12);
}
.zs-glass-light {
  background: var(--glass-light-bg);
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  border: 1px solid var(--glass-light-bd);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.8);
}

/* ---------------- Text & accents ---------------- */
.zs-shine {                        /* animated gradient headline accent */
  background: linear-gradient(100deg, var(--azure-400) 0%, var(--glow-cyan) 30%, #fff 50%, var(--glow-cyan) 70%, var(--azure-400) 100%);
  background-size: 220% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: zs-shimmer 6s linear infinite;
}
.zs-accent {
  background: linear-gradient(110deg, var(--azure-500), var(--glow-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------------- Float / motion ---------------- */
.zs-float   { animation: zs-float 6s ease-in-out infinite; }
.zs-float-sm{ animation: zs-float-sm 5s ease-in-out infinite; }

/* ---------------- Scroll reveal ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); will-change: opacity, transform; }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"]{ transition-delay: .08s; }
.reveal[data-d="2"]{ transition-delay: .16s; }
.reveal[data-d="3"]{ transition-delay: .24s; }
.reveal[data-d="4"]{ transition-delay: .32s; }

/* ---------------- Buttons (shimmer sweep on primary) ---------------- */
.zs-sweep { position: relative; overflow: hidden; }
.zs-sweep::after {
  content: ""; position: absolute; top: 0; left: 0; width: 40%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.45), transparent);
  transform: translateX(-150%) skewX(-18deg);
}
.zs-sweep:hover::after { animation: zs-sweep 0.9s var(--ease-out); }

/* Card hover lift (used via class for non-React contexts). */
.zs-lift { transition: transform .28s var(--ease-out), box-shadow .28s var(--ease-out); }
.zs-lift:hover { transform: translateY(-6px); }

/* Photo treatment. */
.zs-photo { position: relative; overflow: hidden; background: linear-gradient(135deg,#1A2E5E,#0A1430); }
.zs-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.zs-photo .scrim { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,20,48,0) 40%, rgba(10,20,48,.5) 100%), linear-gradient(120deg, rgba(31,97,240,.22), rgba(87,199,255,.08)); mix-blend-mode: normal; }