/* ============================================================
   Atelier Digital TN — V8.5
   Shiny CTA — adaptation fidèle du composant shiny-button.tsx
   appliquée aux CTA du site statique HTML/CSS/JS.
   ============================================================ */

@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 {
  --shiny-cta-bg: #000000;
  --shiny-cta-bg-subtle: #1a1818;
  --shiny-cta-fg: #ffffff;
  --shiny-cta-highlight: #60a5fa;
  --shiny-cta-highlight-subtle: #8bcbff;
  --animation: 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;
  border: 1px solid transparent !important;
  color: var(--shiny-cta-fg) !important;
  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 !important;
  box-shadow:
    inset 0 0 0 1px var(--shiny-cta-bg-subtle),
    0 10px 28px rgba(0,0,0,.16);
  transition: var(--transition);
  transition-property: --gradient-angle-offset, --gradient-percent, --gradient-shine, transform, box-shadow;
  text-decoration: none;
}

.shiny-cta::before,
.shiny-cta::after,
.shiny-cta > .shiny-glow::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;
}

/* Motif de points du composant d'origine. */
.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),
    white calc(var(--position) / 4),
    transparent 0
  ) padding-box;
  background-size: var(--space) var(--space);
  background-repeat: space;
  -webkit-mask-image: conic-gradient(
    from calc(var(--gradient-angle) + 45deg),
    black,
    transparent 10% 90%,
    black
  );
  mask-image: conic-gradient(
    from calc(var(--gradient-angle) + 45deg),
    black,
    transparent 10% 90%,
    black
  );
  border-radius: inherit;
  opacity: .4;
}

/* Shimmer interne. */
.shiny-cta::after {
  --animation: shimmer linear infinite;
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(
    -50deg,
    transparent,
    var(--shiny-cta-highlight),
    transparent
  );
  -webkit-mask-image: radial-gradient(circle at bottom, transparent 40%, black);
  mask-image: radial-gradient(circle at bottom, transparent 40%, black);
  opacity: .55;
}

.shiny-cta > .shiny-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: -1;
}

.shiny-cta > .shiny-glow::before {
  --size: calc(100% + 1rem);
  width: var(--size);
  height: var(--size);
  box-shadow: inset 0 -1ex 2rem 4px var(--shiny-cta-highlight);
  opacity: 0;
  transition: opacity var(--transition);
  animation: calc(var(--duration) * 1.5) breathe linear infinite;
}

.shiny-cta,
.shiny-cta::before,
.shiny-cta::after {
  animation:
    var(--animation) var(--duration),
    var(--animation) calc(var(--duration) / .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);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.11),
    0 14px 38px rgba(19,84,127,.24);
}

.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:is(:hover, :focus-visible) > .shiny-glow::before {
  opacity: 1;
}

.shiny-cta > span:not(.shiny-glow),
.shiny-cta > i,
.shiny-cta > svg {
  position: relative;
  z-index: 2;
}

/* ---- Adaptation des tailles existantes : effet identique, gabarits préservés. ---- */
.header-cta.shiny-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 46px;
  padding: 6px 7px 6px 19px;
  border-left: 0 !important;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: -.01em;
}
.header-cta.shiny-cta i {
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,.94);
  color: #071018;
  box-shadow: 0 0 0 1px rgba(255,255,255,.2);
}
.header-cta.shiny-cta:hover i {
  transform: translate(2px,-2px);
}

.btn.shiny-cta,
.svc84-btn.shiny-cta,
.mobile-shiny-cta.shiny-cta {
  border-radius: 999px;
  min-height: 50px;
  padding: 0 23px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-weight: 750;
}
.btn.shiny-cta:hover,
.svc84-btn.shiny-cta:hover {
  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 !important;
  color:#fff!important;
}

/* Les boutons fantômes deviennent eux aussi shiny, avec un fond très légèrement bleuté. */
.svc84-btn-ghost.shiny-cta {
  --shiny-cta-bg: #071018;
  --shiny-cta-bg-subtle: #10202a;
}

/* Le CTA circulaire garde sa forme éditoriale historique. */
.round-cta.shiny-cta {
  border-radius: 50%;
  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 !important;
}
.round-cta.shiny-cta:hover {
  transform: rotate(-3deg) scale(1.025);
  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 !important;
}

.mobile-menu .mobile-shiny-cta {
  width: max-content;
  margin-top: 14px;
  padding: 0 20px !important;
  border-bottom: 1px solid transparent !important;
  color: #fff !important;
}

@keyframes gradient-angle {
  to { --gradient-angle: 360deg; }
}
@keyframes shimmer {
  to { rotate: 360deg; }
}
@keyframes breathe {
  from, to { scale: 1; }
  50% { scale: 1.2; }
}

/* Accessibilité / économie d'animation. */
@media (prefers-reduced-motion: reduce) {
  .shiny-cta,
  .shiny-cta::before,
  .shiny-cta::after,
  .shiny-cta > .shiny-glow::before {
    animation: none !important;
  }
  .shiny-cta:is(:hover, :focus-visible) {
    --gradient-percent: 20%;
    --gradient-angle-offset: 95deg;
  }
}

@media(max-width:760px){
  .header-cta.shiny-cta{display:none!important}
  .btn.shiny-cta,.svc84-btn.shiny-cta{min-height:48px;padding-inline:19px}
  .mobile-menu .mobile-shiny-cta{display:inline-flex!important}
}