/**
 * Mercury mesh / cursor blob buttons — shared with ivanadiaz.com home.
 * Use .link-btn on <a> or <button>; .primary for highlighted CTA.
 */
@property --blob-x {
  syntax: '<percentage>';
  inherits: true;
  initial-value: 50%;
}

@property --blob-y {
  syntax: '<percentage>';
  inherits: true;
  initial-value: 50%;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  margin: 0;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px) saturate(150%);
  -webkit-backdrop-filter: blur(10px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  text-decoration: none;
  color: #343a40;
  font-family: var(--display, Outfit, Inter, system-ui, sans-serif);
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(70, 76, 68, 0.07), 0 1px 3px rgba(52, 58, 64, 0.05);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  text-align: center;
  line-height: 1.3;
  --blob-x: 50%;
  --blob-y: 50%;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    filter 180ms ease,
    background 180ms ease,
    --blob-x 0.3s ease-out,
    --blob-y 0.3s ease-out;
}

.link-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  background-image:
    linear-gradient(
      165deg,
      rgba(255, 255, 255, 0.42) 0%,
      rgba(255, 255, 255, 0.12) 55%,
      rgba(240, 245, 255, 0.08) 100%
    ),
    radial-gradient(
      circle at var(--blob-x, 50%) var(--blob-y, 50%),
      rgba(255, 255, 255, 0.85) 0%,
      rgba(170, 200, 255, 0.55) 14%,
      rgba(0, 102, 180, 0.32) 30%,
      rgba(0, 66, 136, 0.12) 48%,
      transparent 62%
    ),
    radial-gradient(circle at 78% 22%, rgba(11, 195, 65, 0.2) 0%, transparent 52%),
    radial-gradient(circle at 18% 78%, rgba(100, 160, 255, 0.38) 0%, transparent 55%),
    radial-gradient(circle at 52% 58%, rgba(0, 66, 136, 0.22) 0%, transparent 58%);
  background-size: 100% 100%, 100% 100%, 175% 175%, 165% 165%, 190% 190%;
  background-position: center, center, 0% 0%, 100% 100%, 50% 50%;
  background-repeat: no-repeat;
}

.link-btn .btn-label {
  position: relative;
  z-index: 1;
}

.link-btn:hover {
  transform: scale(1.015);
  background: rgba(255, 255, 255, 0.52);
  backdrop-filter: blur(10px) saturate(1.3);
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.78),
    inset 0 -1px 0 rgba(0, 66, 136, 0.05),
    inset 0 8px 24px rgba(180, 200, 255, 0.15),
    0 0 0 1px rgba(160, 180, 255, 0.28),
    0 10px 26px rgba(0, 42, 88, 0.08);
}

.link-btn:hover::before {
  opacity: 1;
  animation: linkBtnMeshDrift 8s ease-in-out infinite alternate;
}

.link-btn.primary {
  font-weight: 600;
  background: rgba(255, 255, 255, 0.9);
}

.link-btn.primary:hover {
  transform: scale(1.04);
  backdrop-filter: blur(12px) saturate(1.35);
  -webkit-backdrop-filter: blur(12px) saturate(1.35);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    inset 0 -1px 0 rgba(0, 66, 136, 0.06),
    inset 0 8px 24px rgba(180, 200, 255, 0.18),
    0 0 0 1px rgba(160, 180, 255, 0.32),
    0 10px 28px rgba(0, 42, 88, 0.1);
}

@keyframes linkBtnMeshDrift {
  0%, 100% { background-position: center, center, 0% 20%, 100% 80%, 48% 52%; }
  50% { background-position: center, center, 100% 60%, 0% 40%, 58% 42%; }
}

@media (prefers-reduced-motion: reduce) {
  .link-btn:hover { transform: none; }
  .link-btn:hover::before { animation: none; }
}