/* ============================================================
   BRIXYN LTD — Animations & Keyframes
   ============================================================ */

/* ── Keyframes ─────────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes copperPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(200,120,58,0.4); }
  50%      { box-shadow: 0 0 0 8px rgba(200,120,58,0); }
}

@keyframes borderTrace {
  0%   { clip-path: inset(0 100% 100% 0); }
  25%  { clip-path: inset(0 0 100% 0); }
  50%  { clip-path: inset(0 0 0 0); }
  100% { clip-path: inset(0 0 0 0); }
}

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

@keyframes navSlideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

@keyframes heroWordReveal {
  0%   { opacity: 0; transform: translateY(40px) skewY(4deg); }
  100% { opacity: 1; transform: translateY(0) skewY(0deg); }
}

@keyframes overlayFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Entrance Utility Classes ──────────────────────────────── */
/* Applied by IntersectionObserver in main.js */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--t-slow) var(--ease-smooth),
              transform var(--t-slow) var(--ease-smooth);
}

.reveal.reveal--left {
  transform: translateX(-28px);
}

.reveal.reveal--right {
  transform: translateX(28px);
}

.reveal.reveal--scale {
  transform: scale(0.94);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Stagger children delay */
.stagger > *:nth-child(1) { transition-delay: 0ms; }
.stagger > *:nth-child(2) { transition-delay: 80ms; }
.stagger > *:nth-child(3) { transition-delay: 160ms; }
.stagger > *:nth-child(4) { transition-delay: 240ms; }
.stagger > *:nth-child(5) { transition-delay: 320ms; }

/* ── Loading Spinner ───────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: var(--col-copper);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ── Image Hover Zoom ──────────────────────────────────────── */
.img-zoom {
  overflow: hidden;
}

.img-zoom img {
  transition: transform 0.6s var(--ease-smooth);
}

.img-zoom:hover img {
  transform: scale(1.06);
}

/* ── Copper shimmer on buttons ─────────────────────────────── */
.btn-shimmer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.15) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--t-fast);
}

.btn-shimmer:hover::after {
  opacity: 1;
  animation: shimmer 0.8s var(--ease-smooth) forwards;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}