/* ============================================================
   HTK Group — Animations & Scroll Reveals
   ============================================================ */

/* ── Reveal base state ──────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.75s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.75s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.reveal--left {
  transform: translateX(-40px);
}

.reveal.reveal--right {
  transform: translateX(40px);
}

.reveal.reveal--scale {
  transform: scale(0.92);
}

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

/* Stagger delays */
.reveal[data-delay="100"] { transition-delay: 0.1s; }
.reveal[data-delay="200"] { transition-delay: 0.2s; }
.reveal[data-delay="300"] { transition-delay: 0.3s; }
.reveal[data-delay="400"] { transition-delay: 0.4s; }
.reveal[data-delay="500"] { transition-delay: 0.5s; }
.reveal[data-delay="600"] { transition-delay: 0.6s; }

/* Horizontal nudge causes sideways scroll on narrow viewports; use vertical only on small screens */
@media (max-width: 960px) {
  .reveal.reveal--left,
  .reveal.reveal--right {
    transform: translateY(28px);
  }
}

/* ── Silver shimmer line ────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Use background-image (not background shorthand) so overrides never reset background-clip: text.
   inline-block + box-decoration-break improve clipping on WebKit/Android (e.g. Samsung Internet). */
.shimmer-text {
  display: inline-block;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  background-image: linear-gradient(90deg, #888 25%, #e8e8e8 50%, #888 75%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: shimmer 4s linear infinite;
}

@media (prefers-color-scheme: dark) {
  .shimmer-text {
    /* Only swap the image; clip + transparent fill stay intact */
    background-image: linear-gradient(90deg, #a8a8a8 18%, #ffffff 50%, #a8a8a8 82%);
  }
}

@media (prefers-color-scheme: dark) and (prefers-contrast: more) {
  .shimmer-text {
    background-image: linear-gradient(90deg, #bdbdbd 15%, #ffffff 50%, #bdbdbd 85%);
  }
}

/* ── Pulse silver glow ──────────────────────────────────── */
@keyframes silverGlow {
  0%, 100% { box-shadow: 0 0 16px rgba(160,160,160,0.08); }
  50%       { box-shadow: 0 0 32px rgba(160,160,160,0.22); }
}

.glow-pulse {
  animation: silverGlow 3.5s ease-in-out infinite;
}

/* ── Video wrapper frame ────────────────────────────────── */
@keyframes borderShimmer {
  0%   { opacity: 0.35; }
  50%  { opacity: 0.65; }
  100% { opacity: 0.35; }
}

.video-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(180,180,180,0.3);
  border-radius: var(--radius-lg);
  pointer-events: none;
  animation: borderShimmer 4s ease-in-out infinite;
}

/* ── Hero entrance (GSAP targets) ───────────────────────── */
.hero-video-wrap {
  opacity: 0;
}

.hero-text-wrap {
  opacity: 0;
}

/* ── Divider animated draw ──────────────────────────────── */
@keyframes drawLine {
  from { width: 0; }
  to   { width: 60px; }
}

.divider--animated {
  width: 0;
  animation: drawLine 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ── Hover underline ────────────────────────────────────── */
.link-underline {
  position: relative;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gradient-silver-h);
  transition: width var(--transition);
}

.link-underline:hover::after {
  width: 100%;
}

/* ── Page transition ────────────────────────────────────── */
.page-fade {
  animation: pageFadeIn 0.5s ease forwards;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}