/* Animated conic-gradient CTA (vanilla port of shiny-button) */

@property --gradient-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

@property --gradient-angle-offset {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

@property --gradient-percent {
  syntax: "<percentage>";
  initial-value: 5%;
  inherits: false;
}

@property --gradient-shine {
  syntax: "<color>";
  initial-value: white;
  inherits: false;
}

.shiny-cta-wrap {
  display: inline-block;
  margin: 0 auto;
}

.shiny-cta {
  --shiny-cta-bg: var(--surface-strong);
  --shiny-cta-bg-subtle: #141a22;
  --shiny-cta-fg: var(--on-surface-inverse);
  --shiny-cta-highlight: var(--tertiary);
  --shiny-cta-highlight-subtle: #7ddff3;
  --animation: shiny-cta-gradient-angle linear infinite;
  --duration: 3s;
  --shadow-size: 2px;
  --transition: 800ms cubic-bezier(0.25, 1, 0.5, 1);

  isolation: isolate;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  outline-offset: 4px;
  padding: 1rem 2.25rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  border-radius: 360px;
  color: var(--shiny-cta-fg);
  background:
    linear-gradient(var(--shiny-cta-bg), var(--shiny-cta-bg)) padding-box,
    conic-gradient(
      from calc(var(--gradient-angle) - var(--gradient-angle-offset)),
      transparent,
      var(--shiny-cta-highlight) var(--gradient-percent),
      var(--gradient-shine) calc(var(--gradient-percent) * 2),
      var(--shiny-cta-highlight) calc(var(--gradient-percent) * 3),
      transparent calc(var(--gradient-percent) * 4)
    ) border-box;
  box-shadow: inset 0 0 0 1px var(--shiny-cta-bg-subtle);
  transition:
    var(--transition),
    color 0.35s ease,
    transform 0.25s cubic-bezier(0.25, 1, 0.5, 1),
    box-shadow 0.35s ease;
  transition-property:
    --gradient-angle-offset,
    --gradient-percent,
    --gradient-shine,
    color,
    transform,
    box-shadow;
}

.shiny-cta::before,
.shiny-cta::after,
.shiny-cta span::before {
  content: '';
  pointer-events: none;
  position: absolute;
  inset-inline-start: 50%;
  inset-block-start: 50%;
  translate: -50% -50%;
  z-index: -1;
}

.shiny-cta:active {
  translate: 0 1px;
}

.shiny-cta::before {
  --size: calc(100% - var(--shadow-size) * 3);
  --position: 2px;
  --space: calc(var(--position) * 2);
  width: var(--size);
  height: var(--size);
  background:
    radial-gradient(
      circle at var(--position) var(--position),
      rgba(255, 255, 255, 0.9) calc(var(--position) / 4),
      transparent 0
    )
    padding-box;
  background-size: var(--space) var(--space);
  background-repeat: space;
  mask-image: conic-gradient(
    from calc(var(--gradient-angle) + 45deg),
    black,
    transparent 10% 90%,
    black
  );
  border-radius: inherit;
  opacity: 0.4;
  z-index: -1;
}

/* Inner rotate shimmer disabled — overlapped label as a blue box on hover */
.shiny-cta::after {
  display: none;
}

.shiny-cta span {
  position: relative;
  z-index: 1;
}

/* Inner text glow removed — read as a blue box over label on hover */
.shiny-cta span::before {
  display: none;
}

.shiny-cta,
.shiny-cta::before,
.shiny-cta::after {
  animation:
    var(--animation) var(--duration),
    var(--animation) calc(var(--duration) / 0.4) reverse paused;
  animation-composition: add;
}

.shiny-cta:is(:hover, :focus-visible) {
  --gradient-percent: 20%;
  --gradient-angle-offset: 95deg;
  --gradient-shine: var(--shiny-cta-highlight-subtle);
}

.shiny-cta:is(:hover, :focus-visible),
.shiny-cta:is(:hover, :focus-visible)::before,
.shiny-cta:is(:hover, :focus-visible)::after {
  animation-play-state: running;
}

.shiny-cta:focus-visible {
  outline: 2px solid var(--shiny-cta-highlight);
  outline-offset: 4px;
}

@keyframes shiny-cta-gradient-angle {
  to {
    --gradient-angle: 360deg;
  }
}

@keyframes shimmer {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 600px) {
  .shiny-cta-wrap {
    display: block;
    width: 100%;
  }

  .shiny-cta {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .shiny-cta,
  .shiny-cta::before,
  .shiny-cta::after {
    animation: none;
  }

  .shiny-cta:is(:hover, :focus-visible) {
    --gradient-percent: 15%;
  }
}