/* ── Animations & Transitions ── */

/* ── Keyframes ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes reveal {
  from { clip-path: inset(0 100% 0 0); opacity: 0; }
  to   { clip-path: inset(0 0% 0 0);   opacity: 1; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1);    opacity: 1; }
  50%       { transform: scale(1.05); opacity: 0.8; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-8px) rotate(2deg); }
  66%       { transform: translateY(-16px) rotate(-2deg); }
}

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

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

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes draw {
  from { stroke-dashoffset: 1000; }
  to   { stroke-dashoffset: 0; }
}

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
  50%       { box-shadow: 0 0 40px rgba(59, 130, 246, 0.6); }
}

@keyframes particleFloat {
  0%   { transform: translateY(0) translateX(0) rotate(0deg); opacity: 0.7; }
  25%  { transform: translateY(-20px) translateX(10px) rotate(90deg); }
  50%  { transform: translateY(-40px) translateX(-5px) rotate(180deg); opacity: 0.3; }
  75%  { transform: translateY(-20px) translateX(-15px) rotate(270deg); }
  100% { transform: translateY(0) translateX(0) rotate(360deg); opacity: 0.7; }
}

/* ── Scroll-triggered Reveal ── */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal="fade-up"]    { transform: translateY(40px); }
[data-reveal="fade-down"]  { transform: translateY(-40px); }
[data-reveal="fade-left"]  { transform: translateX(-40px); }
[data-reveal="fade-right"] { transform: translateX(40px); }
[data-reveal="scale"]      { transform: scale(0.92); }
[data-reveal="fade"]       { transform: none; }

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Delay helpers */
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }
[data-delay="600"] { transition-delay: 0.6s; }
[data-delay="700"] { transition-delay: 0.7s; }

/* ── Floating Elements ── */
.float-1 { animation: float 6s ease-in-out infinite; }
.float-2 { animation: float 7s ease-in-out 1s infinite; }
.float-3 { animation: floatSlow 9s ease-in-out 2s infinite; }

/* ── Hero Particles ── */
.particles-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
}

/* ── Gradient Text Animation ── */
.animated-gradient {
  background: linear-gradient(270deg, #3B82F6, #60A5FA, #93C5FD, #3B82F6);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 5s ease infinite;
}

/* ── Page Transition ── */
.page-transition {
  animation: fadeIn 0.4s ease both;
}

/* ── Counter Animation ── */
.counter {
  display: inline-block;
  animation: countUp 0.5s ease both;
}

/* ── Stagger children ── */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.revealed > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.10s; }
.stagger-children.revealed > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.15s; }
.stagger-children.revealed > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.20s; }
.stagger-children.revealed > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.25s; }
.stagger-children.revealed > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 0.30s; }

/* ── Hover micro-interactions ── */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow:hover {
  animation: glow 2s ease infinite;
}

.hover-scale {
  transition: transform var(--transition-spring);
}
.hover-scale:hover {
  transform: scale(1.05);
}

/* ── Loading spinner ── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ── Progress bar ── */
.progress-bar {
  height: 4px;
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-fill.animated {
  transform: scaleX(var(--progress, 1));
}