/* ===================================================
   AIVACS — components.css
   Small reusable UI pieces not already in main.css
   =================================================== */

/* ---- Glow divider ---- */
.glow-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0.35;
  margin: 0;
}

/* ---- Scroll-to-top button (shown after 600px scroll) ---- */
.scroll-top {
  position: fixed; bottom: 92px; right: 28px;
  width: 40px; height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  cursor: none; z-index: 700;
  opacity: 0; pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; transform: none; }
.scroll-top:hover { border-color: var(--border-hover); }
.scroll-top svg { width: 16px; height: 16px; stroke: var(--text-secondary); }
.scroll-top:hover svg { stroke: var(--accent); }

/* ---- Tooltip ---- */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-secondary); font-size: 0.7rem; font-family: var(--font-mono);
  padding: 5px 10px; border-radius: 6px; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease;
}
[data-tooltip]:hover::after { opacity: 1; }

/* ---- Noise texture overlay (decorative) ---- */
.noise-overlay {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  opacity: 0.018;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ---- Section accent stripe ---- */
.section-stripe {
  position: absolute; top: 0; left: 6%; right: 6%; height: 1px;
  background: var(--border);
}

/* ---- Loading shimmer (for future async content) ---- */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.shimmer {
  background: linear-gradient(90deg, var(--bg-card) 25%, rgba(75,191,239,0.05) 50%, var(--bg-card) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.6s infinite;
}