/* animations.css — CRT effects, pixel animations, keyframes */

/* ─── Keyframes ──────────────────────────────────────────────────────────── */

/* Float up (click particles) */
@keyframes floatUp {
  0%   { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-40px) scale(0.5); opacity: 0; }
}

/* Blink (cursor / status lights) */
@keyframes blink {
  0%, 49%  { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Glow pulse */
@keyframes glowPulse {
  0%, 100% { text-shadow: var(--glow-green); }
  50%      { text-shadow: 0 0 4px var(--accent-primary); }
}

/* Glow pulse pink */
@keyframes glowPulsePink {
  0%, 100% { text-shadow: var(--glow-pink); }
  50%      { text-shadow: 0 0 4px var(--accent-secondary); }
}

/* Scanline sweep */
@keyframes scanlineSweep {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

/* Pixel walk right (sprite sheet simulation) */
@keyframes walkRight {
  0%   { transform: translateX(0); }
  100% { transform: translateX(calc(100vw + 100px)); }
}

/* Idle float */
@keyframes idleFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

/* Slide in from left */
@keyframes slideInLeft {
  from { transform: translateX(-100%); opacity: 0; }
  to   { transform: translateX(0);     opacity: 1; }
}

/* Slide in from right */
@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* Slide in from bottom */
@keyframes slideInUp {
  from { transform: translateY(32px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* Flicker / glitch */
@keyframes flicker {
  0%   { opacity: 1; }
  5%   { opacity: 0.8; }
  10%  { opacity: 1; }
  15%  { opacity: 0.6; }
  20%  { opacity: 1; }
  55%  { opacity: 1; }
  60%  { opacity: 0.9; }
  65%  { opacity: 1; }
  100% { opacity: 1; }
}

/* Horizontal glitch offset */
@keyframes glitchX {
  0%, 100% { clip-path: inset(0 0 100% 0); transform: translateX(0); }
  20%      { clip-path: inset(20% 0 60% 0); transform: translateX(-4px); }
  40%      { clip-path: inset(50% 0 30% 0); transform: translateX(4px); }
  60%      { clip-path: inset(70% 0 10% 0); transform: translateX(-2px); }
  80%      { clip-path: inset(10% 0 80% 0); transform: translateX(2px); }
}

/* Pixel bounce */
@keyframes pixelBounce {
  0%, 100% { transform: translateY(0); }
  25%      { transform: translateY(-12px); }
  50%      { transform: translateY(0); }
  75%      { transform: translateY(-6px); }
}

/* Spin (loading) */
@keyframes pixelSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Matrix rain drop */
@keyframes rainDrop {
  0%   { transform: translateY(-20px); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(100vh); opacity: 0; }
}

/* CRT turn-on */
@keyframes crtOn {
  0%   { transform: scaleY(0.01) scaleX(1); opacity: 0; filter: brightness(10); }
  30%  { transform: scaleY(1) scaleX(1);    opacity: 1; filter: brightness(3); }
  100% { transform: scaleY(1) scaleX(1);    opacity: 1; filter: brightness(1); }
}

/* RGB shift (chromatic aberration) */
@keyframes rgbShift {
  0%, 100% {
    text-shadow: -2px 0 var(--accent-secondary), 2px 0 var(--accent-tertiary);
  }
  50% {
    text-shadow: 2px 0 var(--accent-secondary), -2px 0 var(--accent-tertiary);
  }
}

/* Wipe in */
@keyframes wipeIn {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0% 0 0); }
}

/* ─── Utility animation classes ──────────────────────────────────────────── */
.anim-blink          { animation: blink 1s step-end infinite; }
.anim-glow-pulse     { animation: glowPulse 2s ease-in-out infinite; }
.anim-glow-pink      { animation: glowPulsePink 2s ease-in-out infinite; }
.anim-float          { animation: idleFloat 3s ease-in-out infinite; }
.anim-flicker        { animation: flicker 4s linear infinite; }
.anim-bounce         { animation: pixelBounce 0.6s steps(4) infinite; }
.anim-spin           { animation: pixelSpin 1s steps(8) infinite; }
.anim-slide-up       { animation: slideInUp 0.4s ease-out both; }
.anim-slide-left     { animation: slideInLeft 0.4s ease-out both; }
.anim-slide-right    { animation: slideInRight 0.4s ease-out both; }
.anim-wipe           { animation: wipeIn 0.5s ease-out both; }
.anim-crt-on         { animation: crtOn 0.5s ease-out both; }
.anim-rgb-shift      { animation: rgbShift 1.5s ease-in-out infinite; }

/* ─── Glitch text effect ─────────────────────────────────────────────────── */
.glitch {
  position: relative;
  color: var(--text-bright);
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
}

.glitch::before {
  color: var(--accent-secondary);
  animation: glitchX 3s infinite linear;
  animation-delay: 0.1s;
}

.glitch::after {
  color: var(--accent-tertiary);
  animation: glitchX 3s infinite linear;
  animation-delay: 0.3s;
}

/* ─── Scanline sweep overlay (individual element) ────────────────────────── */
.scanline-sweep::before {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 4px;
  background: rgba(0, 255, 65, 0.15);
  animation: scanlineSweep 3s linear infinite;
  pointer-events: none;
}

/* ─── Pixel sprite (CSS sprite character) ────────────────────────────────── */
.pixel-sprite {
  display: inline-block;
  image-rendering: pixelated;
  animation: idleFloat 3s ease-in-out infinite;
}

/* ─── Blinking cursor ────────────────────────────────────────────────────── */
.cursor-blink::after {
  content: '█';
  color: var(--accent-primary);
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

/* ─── Loading spinner (pixel style) ─────────────────────────────────────── */
.pixel-loader {
  font-family: var(--font-primary);
  font-size: 0.7rem;
  color: var(--accent-primary);
  display: inline-flex;
  gap: var(--sp-3);
  align-items: center;
}

.pixel-loader::before {
  content: '◐';
  animation: pixelSpin 0.8s steps(4) infinite;
}

/* ─── Neon border pulse ──────────────────────────────────────────────────── */
.neon-border-pulse {
  animation: neonBorderPulse 2s ease-in-out infinite;
}

@keyframes neonBorderPulse {
  0%, 100% { box-shadow: 0 0 4px var(--accent-primary), 0 0 12px var(--accent-primary); }
  50%      { box-shadow: 0 0 2px var(--accent-primary); }
}

/* ─── Hero pixel particles (CSS only, no JS) ─────────────────────────────── */
.pixel-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.pixel-particles span {
  position: absolute;
  width: 4px; height: 4px;
  background: var(--accent-primary);
  animation: rainDrop linear infinite;
}

/* Auto-stagger for up to 20 spans */
.pixel-particles span:nth-child(1)  { left: 5%;  animation-duration: 4s;   animation-delay: 0s; }
.pixel-particles span:nth-child(2)  { left: 12%; animation-duration: 5.5s; animation-delay: 1s; }
.pixel-particles span:nth-child(3)  { left: 20%; animation-duration: 3.5s; animation-delay: 2s; background: var(--accent-secondary); }
.pixel-particles span:nth-child(4)  { left: 28%; animation-duration: 6s;   animation-delay: 0.5s; }
.pixel-particles span:nth-child(5)  { left: 36%; animation-duration: 4.5s; animation-delay: 1.5s; background: var(--accent-tertiary); }
.pixel-particles span:nth-child(6)  { left: 45%; animation-duration: 5s;   animation-delay: 0.2s; }
.pixel-particles span:nth-child(7)  { left: 55%; animation-duration: 3.8s; animation-delay: 2.5s; background: var(--accent-secondary); }
.pixel-particles span:nth-child(8)  { left: 63%; animation-duration: 6.2s; animation-delay: 0.8s; }
.pixel-particles span:nth-child(9)  { left: 72%; animation-duration: 4.2s; animation-delay: 1.8s; background: var(--accent-tertiary); }
.pixel-particles span:nth-child(10) { left: 80%; animation-duration: 5.5s; animation-delay: 3s; }
.pixel-particles span:nth-child(11) { left: 88%; animation-duration: 3.6s; animation-delay: 0.4s; background: var(--accent-secondary); }
.pixel-particles span:nth-child(12) { left: 93%; animation-duration: 4.8s; animation-delay: 2.2s; }

/* ─── Animate staggered delays for grid children ─────────────────────────── */
.stagger > *:nth-child(1)  { animation-delay: 0.0s; }
.stagger > *:nth-child(2)  { animation-delay: 0.05s; }
.stagger > *:nth-child(3)  { animation-delay: 0.10s; }
.stagger > *:nth-child(4)  { animation-delay: 0.15s; }
.stagger > *:nth-child(5)  { animation-delay: 0.20s; }
.stagger > *:nth-child(6)  { animation-delay: 0.25s; }
.stagger > *:nth-child(7)  { animation-delay: 0.30s; }
.stagger > *:nth-child(8)  { animation-delay: 0.35s; }