/* ============================================
   SippyClips - Animations & Keyframes
   Retro Geek Paper & Pencil Vibes
   ============================================ */

/* --- Typing Cursor Blink --- */
@keyframes typing {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

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

/* --- Sticky Note Wiggle --- */
@keyframes wiggle {
  0%, 100% { transform: rotate(-2deg); }
  25% { transform: rotate(2deg); }
  50% { transform: rotate(-3deg); }
  75% { transform: rotate(3deg); }
}

/* --- Slide Entrances --- */
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-60px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(60px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- SVG Line Drawing --- */
@keyframes drawLine {
  from { stroke-dashoffset: 1000; }
  to { stroke-dashoffset: 0; }
}

/* --- Bouncy Entrance --- */
@keyframes bounce {
  0% { transform: scale(1, 1) translateY(0); }
  10% { transform: scale(1.1, 0.9) translateY(0); }
  30% { transform: scale(0.9, 1.1) translateY(-20px); }
  50% { transform: scale(1.05, 0.95) translateY(0); }
  57% { transform: scale(1, 1) translateY(-7px); }
  64% { transform: scale(1, 1) translateY(0); }
  100% { transform: scale(1, 1) translateY(0); }
}

/* --- Pencil Sketch Reveal --- */
@keyframes pencilSketch {
  0% { opacity: 0; transform: translate(-2px, 1px); }
  20% { opacity: 0.3; transform: translate(1px, -1px); }
  40% { opacity: 0.5; transform: translate(-1px, 2px); }
  60% { opacity: 0.7; transform: translate(2px, 0); }
  80% { opacity: 0.9; transform: translate(0, -1px); }
  100% { opacity: 1; transform: translate(0, 0); }
}

/* --- Paper Fold Reveal --- */
@keyframes paperFold {
  from {
    opacity: 0;
    transform: perspective(800px) rotateX(-90deg);
    transform-origin: top center;
  }
  to {
    opacity: 1;
    transform: perspective(800px) rotateX(0deg);
    transform-origin: top center;
  }
}

/* --- Scribble Motion --- */
@keyframes scribble {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1px, -1px); }
  20% { transform: translate(1px, 0); }
  30% { transform: translate(0, 1px); }
  40% { transform: translate(-1px, 1px); }
  50% { transform: translate(1px, -1px); }
  60% { transform: translate(-1px, 0); }
  70% { transform: translate(0, -1px); }
  80% { transform: translate(1px, 1px); }
  90% { transform: translate(-1px, -1px); }
}

/* --- Paperclip Spin --- */
@keyframes spinPaperclip {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* --- Highlight Marker Swipe --- */
@keyframes highlightSwipe {
  from { background-size: 0% 40%; }
  to { background-size: 100% 40%; }
}

/* --- Error Shake --- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* --- Confetti Burst --- */
@keyframes confetti {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(-400px) rotate(720deg); opacity: 0; }
}

/* --- Typewriter Reveal --- */
@keyframes typewriter {
  from { max-width: 0; }
  to { max-width: 100%; }
}

/* --- Doodle Stroke Appear --- */
@keyframes doodleAppear {
  from {
    stroke-dashoffset: 200;
    opacity: 0;
  }
  20% { opacity: 1; }
  to {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}

/* --- Pulse Glow --- */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 5px rgba(33, 150, 243, 0.3); }
  50% { box-shadow: 0 0 20px rgba(33, 150, 243, 0.6); }
}

/* --- Scroll Indicator Bounce --- */
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(10px); opacity: 1; }
}


/* ============================================
   Utility Animation Classes
   ============================================ */

/* Scroll-triggered reveal */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Parallax layer */
.parallax-layer {
  will-change: transform;
  transform-style: preserve-3d;
}

/* Hover animations */
.hover-float:hover {
  transform: translateY(-5px);
  transition: transform 0.3s ease;
}

.hover-wiggle:hover {
  animation: wiggle 0.5s ease;
}

.hover-grow:hover {
  transform: scale(1.05);
  transition: transform 0.3s ease;
}

.hover-sketch:hover {
  animation: pencilSketch 0.6s ease forwards;
}

/* Continuous animations */
.anim-float {
  animation: float 6s ease-in-out infinite;
}

.anim-wiggle {
  animation: wiggle 3s ease-in-out infinite;
}

.anim-spin {
  animation: spinPaperclip 2s linear infinite;
}

.anim-bounce {
  animation: scrollBounce 2s ease-in-out infinite;
}

/* Typing cursor */
.typing-cursor::after {
  content: '|';
  animation: typing 0.8s step-end infinite;
  color: #2196F3;
  font-weight: 100;
}

/* Highlight marker effect */
.highlight-animate {
  background-image: linear-gradient(120deg, #ffd93d 0%, #ffd93d 100%);
  background-repeat: no-repeat;
  background-position: 0 80%;
  background-size: 0% 40%;
  animation: highlightSwipe 1s ease forwards;
  animation-play-state: paused;
}

.highlight-animate.animated {
  animation-play-state: running;
}

/* Shake for errors */
.shake {
  animation: shake 0.6s ease;
}

/* Confetti particle base */
.confetti-piece {
  position: fixed;
  width: 10px;
  height: 10px;
  pointer-events: none;
  z-index: 9999;
  animation: confetti 1.5s ease forwards;
}

/* Logo spin easter egg */
.spin-logo {
  animation: spinPaperclip 0.5s ease;
}

/* Draw-in SVG doodles */
.doodle-svg {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: doodleAppear 1.5s ease forwards;
  animation-play-state: paused;
}

.doodle-svg.animated {
  animation-play-state: running;
}


/* ============================================
   Reduced Motion Preferences
   ============================================ */
@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;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }

  .parallax-layer {
    transform: none !important;
  }
}