/* ============================================================
   JAO PORTFOLIO - animations.css
   Animation System: Keyframes, Scroll Reveal, Motion
   Author: Joshua Aluaye Ohiole
   Website: jao.jaotechgworld.com
   ============================================================ */

/* ============================================================
   1. KEYFRAME DEFINITIONS
   ============================================================ */

/* Floating orb movement */
@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 30px) scale(0.95); }
}

/* Slow spin for decorative rings */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Pulsing dot for live indicators */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

/* Typewriter cursor blink */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* Fade up - standard entrance */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Fade in - simple opacity */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Fade left */
@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-28px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Fade right */
@keyframes fadeRight {
  from { opacity: 0; transform: translateX(28px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Scale up */
@keyframes scaleUp {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* Floating gentle bob */
@keyframes float-bob {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

/* Gradient shimmer for text */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Glow pulse for buttons / accents */
@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 16px rgba(232,25,44,0.3); }
  50%       { box-shadow: 0 0 32px rgba(232,25,44,0.55); }
}

/* Slide in from right (mobile menu) */
@keyframes slideInRight {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

/* Skill bar fill */
@keyframes skillFill {
  from { width: 0; }
}

/* Count up for numbers */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Border spin for avatar ring */
@keyframes border-spin {
  to { transform: rotate(360deg); }
}

/* Stagger reveal for lists */
@keyframes staggerIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Loading bar */
@keyframes loadBar {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Ripple for buttons */
@keyframes ripple {
  from { transform: scale(0); opacity: 0.4; }
  to   { transform: scale(4); opacity: 0; }
}

/* ============================================================
   2. SCROLL REVEAL SYSTEM
   Elements with .reveal class animate when scrolled into view.
   JavaScript adds .revealed class via IntersectionObserver.
   ============================================================ */

/* Default state (hidden) */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Revealed state */
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Directional variants */
.reveal--left {
  transform: translateX(-28px);
}

.reveal--left.revealed {
  transform: translateX(0);
}

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

.reveal--right.revealed {
  transform: translateX(0);
}

.reveal--scale {
  transform: scale(0.93);
}

.reveal--scale.revealed {
  transform: scale(1);
}

.reveal--fade {
  transform: none;
}

.reveal--fade.revealed {
  transform: none;
}

/* Stagger delays for children */
.stagger > *:nth-child(1) { transition-delay: 0.05s; }
.stagger > *:nth-child(2) { transition-delay: 0.12s; }
.stagger > *:nth-child(3) { transition-delay: 0.19s; }
.stagger > *:nth-child(4) { transition-delay: 0.26s; }
.stagger > *:nth-child(5) { transition-delay: 0.33s; }
.stagger > *:nth-child(6) { transition-delay: 0.40s; }
.stagger > *:nth-child(7) { transition-delay: 0.47s; }
.stagger > *:nth-child(8) { transition-delay: 0.54s; }

/* ============================================================
   3. HERO ENTRANCE ANIMATIONS
   Applied directly to elements with specific animation classes.
   ============================================================ */

.anim-hero-eyebrow {
  animation: fadeUp 0.7s cubic-bezier(0.4,0,0.2,1) 0.1s both;
}

.anim-hero-name {
  animation: fadeUp 0.8s cubic-bezier(0.4,0,0.2,1) 0.22s both;
}

.anim-hero-tagline {
  animation: fadeUp 0.8s cubic-bezier(0.4,0,0.2,1) 0.36s both;
}

.anim-hero-cta {
  animation: fadeUp 0.7s cubic-bezier(0.4,0,0.2,1) 0.48s both;
}

.anim-hero-stats {
  animation: fadeUp 0.7s cubic-bezier(0.4,0,0.2,1) 0.58s both;
}

.anim-hero-image {
  animation: fadeRight 0.9s cubic-bezier(0.4,0,0.2,1) 0.28s both;
}

/* ============================================================
   4. FLOATING EFFECTS
   ============================================================ */

.float-slow {
  animation: float-bob 7s ease-in-out infinite;
}

.float-medium {
  animation: float-bob 5s ease-in-out infinite;
}

.float-fast {
  animation: float-bob 3.5s ease-in-out infinite;
}

.float-delay-1 { animation-delay: -1s; }
.float-delay-2 { animation-delay: -2.5s; }
.float-delay-3 { animation-delay: -4s; }

/* ============================================================
   5. HOVER EFFECTS
   ============================================================ */

/* Lift on hover */
.hover-lift {
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

/* Glow on hover */
.hover-glow-red:hover {
  box-shadow: var(--glow-red);
}

.hover-glow-blue:hover {
  box-shadow: var(--glow-blue);
}

/* Scale on hover */
.hover-scale {
  transition: transform var(--transition-smooth);
}

.hover-scale:hover {
  transform: scale(1.04);
}

/* Gradient border on hover */
.hover-grad-border {
  position: relative;
  border: 1px solid var(--border-card);
  transition: border-color var(--transition-smooth);
}

.hover-grad-border::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient-brand);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-smooth);
}

.hover-grad-border:hover::after {
  opacity: 0.4;
}

/* ============================================================
   6. SHIMMER TEXT ANIMATION
   ============================================================ */

.shimmer-text {
  background: linear-gradient(
    90deg,
    var(--clr-red) 0%,
    var(--clr-purple) 25%,
    var(--clr-blue) 50%,
    var(--clr-purple) 75%,
    var(--clr-red) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

/* ============================================================
   7. BUTTON ANIMATIONS
   ============================================================ */

/* Ripple effect on click */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple .ripple-wave {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  width: 80px;
  height: 80px;
  margin-top: -40px;
  margin-left: -40px;
  animation: ripple 0.7s ease-out forwards;
  pointer-events: none;
}

/* Glow pulse on CTA buttons */
.btn-glow-pulse {
  animation: glow-pulse 2.4s ease-in-out infinite;
}

/* ============================================================
   8. CARD ENTRANCE FOR GRIDS
   ============================================================ */

/* Cards in a grid stagger their entrance */
.cards-grid .card,
.cards-grid .proj-card,
.cards-grid .site-card,
.cards-grid .graphics-card,
.cards-grid .product-card,
.cards-grid .training-card {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s cubic-bezier(0.4,0,0.2,1),
    transform 0.6s cubic-bezier(0.4,0,0.2,1);
}

.cards-grid.revealed .card,
.cards-grid.revealed .proj-card,
.cards-grid.revealed .site-card,
.cards-grid.revealed .graphics-card,
.cards-grid.revealed .product-card,
.cards-grid.revealed .training-card {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for grid children */
.cards-grid > *:nth-child(1) { transition-delay: 0.04s; }
.cards-grid > *:nth-child(2) { transition-delay: 0.12s; }
.cards-grid > *:nth-child(3) { transition-delay: 0.20s; }
.cards-grid > *:nth-child(4) { transition-delay: 0.28s; }
.cards-grid > *:nth-child(5) { transition-delay: 0.36s; }
.cards-grid > *:nth-child(6) { transition-delay: 0.44s; }
.cards-grid > *:nth-child(7) { transition-delay: 0.52s; }
.cards-grid > *:nth-child(8) { transition-delay: 0.60s; }
.cards-grid > *:nth-child(9) { transition-delay: 0.68s; }

/* ============================================================
   9. PAGE TRANSITION
   ============================================================ */

.page-transition {
  animation: fadeIn 0.4s ease both;
}

/* ============================================================
   10. LOADING SKELETON
   ============================================================ */

@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--border-subtle) 25%,
    rgba(255,255,255,0.06) 50%,
    var(--border-subtle) 75%
  );
  background-size: 800px 100%;
  animation: skeleton-shimmer 1.5s infinite linear;
  border-radius: var(--radius-sm);
}

/* ============================================================
   11. SOCIAL ICON ANIMATION
   ============================================================ */

.social-card {
  transition:
    transform 0.35s cubic-bezier(0.34,1.56,0.64,1),
    box-shadow 0.35s ease,
    border-color 0.2s ease;
}

/* ============================================================
   12. NAVBAR SCROLL ANIMATION
   ============================================================ */

.navbar {
  transition:
    background 0.3s ease,
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

/* ============================================================
   13. MODAL ANIMATION
   ============================================================ */

.modal-overlay {
  animation: fadeIn 0.22s ease both;
}

.modal {
  transition:
    transform 0.35s cubic-bezier(0.34,1.2,0.64,1),
    opacity 0.28s ease;
}

/* ============================================================
   14. SCROLL PROGRESS BAR
   ============================================================ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--gradient-red-blue);
  z-index: 1001;
  width: 0%;
  transition: width 0.1s linear;
}

/* ============================================================
   15. TYPEWRITER CURSOR
   ============================================================ */

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--clr-blue-light);
  margin-left: 2px;
  vertical-align: middle;
  border-radius: 1px;
  animation: blink 1s step-end infinite;
}

/* ============================================================
   16. GITHUB BUTTON HOVER EFFECT
   ============================================================ */

.github-btn {
  position: relative;
  overflow: hidden;
}

.github-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.08) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.github-btn:hover::after {
  transform: translateX(100%);
}

/* ============================================================
   17. GRADIENT BORDER ANIMATED
   For premium card highlights
   ============================================================ */

@keyframes gradient-border-spin {
  to { --angle: 360deg; }
}

@property --angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.card-premium {
  border: 1px solid;
  border-color: transparent;
  background:
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    conic-gradient(from var(--angle), var(--clr-red), var(--clr-purple), var(--clr-blue), var(--clr-red)) border-box;
  animation: gradient-border-spin 6s linear infinite;
}

/* ============================================================
   18. REDUCED MOTION SUPPORT
   Respect user preference for 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;
  }

  .cards-grid .card,
  .cards-grid .proj-card,
  .cards-grid .site-card {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   END OF animations.css
   ============================================================ */