/* ============================================================
   ANIMATIONS.CSS – Keyframes & Scroll-Reveal
   ============================================================ */

/* ── Keyframes ── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(1.35); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

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

@keyframes floatBob {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-9px); }
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes scrollBob {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.45; }
  50%       { transform: translateX(-50%) translateY(7px); opacity: 0.28; }
}

@keyframes marqueeScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s cubic-bezier(0.16,1,0.3,1),
    transform 0.7s cubic-bezier(0.16,1,0.3,1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-32px);
  transition:
    opacity 0.7s cubic-bezier(0.16,1,0.3,1),
    transform 0.7s cubic-bezier(0.16,1,0.3,1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(32px);
  transition:
    opacity 0.7s cubic-bezier(0.16,1,0.3,1),
    transform 0.7s cubic-bezier(0.16,1,0.3,1);
}

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

/* ── Nav scrolled state ── */
nav.scrolled {
  box-shadow: 0 1px 0 var(--border-lt), 0 4px 28px rgba(0,0,0,0.07);
}

/* ── Theme transition: smooth mode switch ── */
*, *::before, *::after {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: 0.25s;
  transition-timing-function: ease;
}

/* Override for elements that need their own transitions */
.photo-ring,
.photo-inner img,
.btn-primary,
.btn-outline,
.btn-cv,
.btn-card-action,
.btn-cert-primary,
.btn-cert-secondary,
.social-btn,
.hero-social-link,
.project-card,
.cert-card,
.org-card,
.stat-card,
.detail-item,
.tl-content,
.skill-card,
.back-to-top,
.theme-toggle {
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
}