/* ===========================
   ANIMATIONS CSS
=========================== */

/* ---------- Reveal Animations ---------- */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.75s cubic-bezier(0.4,0,0.2,1), transform 0.75s cubic-bezier(0.4,0,0.2,1);
}
.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.85s cubic-bezier(0.4,0,0.2,1), transform 0.85s cubic-bezier(0.4,0,0.2,1);
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.85s cubic-bezier(0.4,0,0.2,1), transform 0.85s cubic-bezier(0.4,0,0.2,1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.75s cubic-bezier(0.4,0,0.2,1), transform 0.75s cubic-bezier(0.4,0,0.2,1);
}
.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* ---------- Stagger Delays ---------- */
[data-delay="0"]   { transition-delay: 0ms; }
[data-delay="50"]  { transition-delay: 50ms; }
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="150"] { transition-delay: 150ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="250"] { transition-delay: 250ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }

/* ---------- Loading Shimmer ---------- */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.shimmer {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-2) 37%, var(--surface) 63%);
  background-size: 800px 100%;
  animation: shimmer 1.4s ease-in-out infinite;
}

/* ---------- Number Counter ---------- */
@keyframes countUp {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---------- Floating Elements ---------- */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(1deg); }
  66% { transform: translateY(5px) rotate(-1deg); }
}
.float-anim { animation: float 6s ease-in-out infinite; }

/* ---------- Glow Pulse ---------- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(59,130,246,0.2), 0 0 60px rgba(59,130,246,0.1); }
  50% { box-shadow: 0 0 40px rgba(59,130,246,0.4), 0 0 80px rgba(59,130,246,0.2); }
}
.glow-pulse { animation: glowPulse 3s ease-in-out infinite; }

/* ---------- Spin Slow ---------- */
@keyframes spinSlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.spin-slow { animation: spinSlow 20s linear infinite; }

/* ---------- Typewriter Cursor ---------- */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--blue);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

/* ---------- Ripple ---------- */
@keyframes ripple {
  0% { transform: scale(0); opacity: 0.6; }
  100% { transform: scale(4); opacity: 0; }
}
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  animation: ripple 0.6s cubic-bezier(0.4,0,0.2,1);
  pointer-events: none;
}

/* ---------- Gradient Border Spin ---------- */
@keyframes borderSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.grad-border-wrap {
  position: relative;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(45deg, var(--blue), var(--electric), var(--blue-dark), var(--blue));
  background-size: 400% 400%;
  animation: gradMove 4s ease infinite;
}
@keyframes gradMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ---------- Slide Transitions ---------- */
.page-enter {
  animation: pageEnter 0.5s cubic-bezier(0.4,0,0.2,1) forwards;
}
@keyframes pageEnter {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---------- Card Hover Glow ---------- */
.project-card, .service-card, .review-card, .case-study-card {
  position: relative;
}
.project-card::before,
.service-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(59,130,246,0.3), transparent, rgba(56,189,248,0.2));
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}
.project-card:hover::before,
.service-card:hover::before {
  opacity: 1;
}

/* ---------- Underline Hover ---------- */
.underline-hover {
  position: relative;
}
.underline-hover::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--blue-light);
  transition: width 0.35s cubic-bezier(0.4,0,0.2,1);
}
.underline-hover:hover::after { width: 100%; }

/* ---------- Progress Bar Animation ---------- */
@keyframes progressFill {
  0% { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}

/* ---------- Tilt Effect (JS driven) ---------- */
.tilt-card {
  transition: transform 0.15s ease-out;
  transform-style: preserve-3d;
}

/* ---------- Noise Overlay ---------- */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9997;
  opacity: 0.018;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ---------- Section Reveal Grid ---------- */
.stagger-grid > * {
  opacity: 0;
  transform: translateY(30px);
}
.stagger-grid.visible > *:nth-child(1) { animation: fadeUp 0.6s 0ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(2) { animation: fadeUp 0.6s 80ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(3) { animation: fadeUp 0.6s 160ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(4) { animation: fadeUp 0.6s 240ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(5) { animation: fadeUp 0.6s 320ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(6) { animation: fadeUp 0.6s 400ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(7) { animation: fadeUp 0.6s 480ms cubic-bezier(0.4,0,0.2,1) forwards; }
.stagger-grid.visible > *:nth-child(8) { animation: fadeUp 0.6s 560ms cubic-bezier(0.4,0,0.2,1) forwards; }
@keyframes fadeUp {
  0% { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}