/* ============================================================
   ANIMATIONS — Keyframes, Scroll-reveal, Transitions, Hovers
   ============================================================ */

/* ---- Keyframes ---- */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

@keyframes float-hint {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
  50%       { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

@keyframes toast-in {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes reveal-up {
  from { transform: translateY(28px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 12px var(--accent-glow); }
  50%       { box-shadow: 0 0 28px var(--accent-glow-md); }
}

@keyframes border-march {
  0%   { background-position: 0% 0%, 100% 0%, 100% 100%, 0% 100%; }
  100% { background-position: 100% 0%, 100% 100%, 0% 100%, 0% 0%; }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes wa-pulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
  will-change: opacity, transform;
}

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

/* Staggered children */
.reveal:nth-child(1)  { transition-delay: 0ms; }
.reveal:nth-child(2)  { transition-delay: 60ms; }
.reveal:nth-child(3)  { transition-delay: 120ms; }
.reveal:nth-child(4)  { transition-delay: 180ms; }
.reveal:nth-child(5)  { transition-delay: 240ms; }
.reveal:nth-child(6)  { transition-delay: 300ms; }

/* ---- Nav logo mark hover ---- */
.nav-logo-mark {
  animation: none;
}

.nav-logo:hover .nav-logo-mark {
  animation: spin-slow 0.4s var(--ease-out) forwards;
}

/* ---- Service card hover glow ---- */
.service-card:hover {
  animation: glow-pulse 2s ease-in-out infinite;
}

/* ---- Hero title entrance (prefers-reduced-motion off) ---- */
@media (prefers-reduced-motion: no-preference) {
  .hero-title.visible {
    animation: reveal-up var(--duration-slow) var(--ease-out) both;
  }
}

/* ---- Stat number entrance ---- */
.stat-number {
  display: inline-block;
  transition: color var(--duration-mid) var(--ease-out);
}

.stat:hover .stat-number {
  color: var(--accent-light);
  text-shadow: 0 0 16px var(--accent-glow-md);
}

/* ---- Project item hover ---- */
.project-item {
  transition: background var(--duration-mid) var(--ease-out),
              padding var(--duration-mid) var(--ease-out),
              margin var(--duration-mid) var(--ease-out),
              border-radius var(--duration-mid) var(--ease-out);
}

/* ---- Tech pill hover ---- */
.tech-pill {
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.tech-pill:hover {
  transform: translateY(-2px);
}

/* ---- CV 3D rotation ---- */
.cv-3d {
  animation: cv-float 5s ease-in-out infinite;
}

@keyframes cv-float {
  0%, 100% { transform: rotateY(-18deg) rotateX(4deg) translateY(0); }
  50%       { transform: rotateY(-22deg) rotateX(6deg) translateY(-6px); }
}

.lead-magnet-visual:hover .cv-3d {
  animation: none;
  transform: rotateY(-6deg) rotateX(2deg);
}

/* ---- Testimonial border glow ---- */
.testimonial {
  transition: border-color var(--duration-mid) var(--ease-out),
              box-shadow var(--duration-mid) var(--ease-out);
}

.testimonial:hover {
  border-left-color: var(--accent-light);
  box-shadow: -3px 0 20px var(--accent-glow);
}

/* ---- Badge pulse border ---- */
.badge {
  transition: background var(--duration-mid), border-color var(--duration-mid);
}

.badge:hover {
  background: var(--accent-glow-md);
  border-color: var(--accent);
}

/* ---- Btn primary press ---- */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn-primary:active::after { opacity: 1; }

/* ---- Section kicker entrance ---- */
.section-kicker.visible {
  animation: fade-in var(--duration-mid) var(--ease-out) both;
}

/* ---- Scroll progress bar transition ---- */
#scroll-progress {
  transition: width 60ms linear;
}

/* ---- Nav scroll state ---- */
#main-nav {
  transition: background var(--duration-mid) var(--ease-in-out),
              border-color var(--duration-mid) var(--ease-in-out),
              box-shadow var(--duration-mid) var(--ease-in-out);
}

/* ---- Diagram node hover ---- */
.diagram-node {
  transition: border-color var(--duration-mid) var(--ease-out),
              box-shadow var(--duration-mid) var(--ease-out),
              transform var(--duration-mid) var(--ease-out);
}

.diagram-node:hover {
  transform: translateY(-3px);
}

/* ---- Form focus glow ---- */
.form-group input,
.form-group textarea,
.hero-form-row input {
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

/* ---- Toast ---- */
.toast {
  transition: opacity var(--duration-mid) var(--ease-out),
              transform var(--duration-mid) var(--ease-out);
}

/* ---- Prefers reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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

  .scroll-hint { animation: none; }
  .cv-3d { animation: none; }
  .badge::before { animation: none; }
}