/* ═══════════════════════════════════════════════════════
   BIONOTES — Animations & Special Effects
   Preloader | Custom Cursor | Scroll Progress | Parallax
   Micro-interactions | Page Transitions | Glitch
═══════════════════════════════════════════════════════ */

/* ── HIDE NATIVE CURSOR ── */
*, *::before, *::after { cursor: none !important; }

/* ════════════════════════════════
   PRELOADER
════════════════════════════════ */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #060608;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  transition: opacity 0.8s cubic-bezier(0.4,0,0.2,1),
              visibility 0.8s;
}
#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* DNA spinner */
.preloader-dna {
  position: relative;
  width: 80px;
  height: 80px;
}
.preloader-dna::before,
.preloader-dna::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
}
.preloader-dna::before {
  border-top-color: #00FFB2;
  border-bottom-color: #00FFB2;
  animation: dnaSpinA 1.4s linear infinite;
}
.preloader-dna::after {
  border-left-color: #00D9FF;
  border-right-color: #7B61FF;
  animation: dnaSpinB 1.8s linear infinite reverse;
  inset: 10px;
}
.preloader-dna-dot {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #00FFB2;
  box-shadow: 0 0 20px #00FFB2, 0 0 40px rgba(0,255,178,0.5);
  animation: preloaderPulse 1.4s ease-in-out infinite;
}

@keyframes dnaSpinA {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes dnaSpinB {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes preloaderPulse {
  0%, 100% { transform: translate(-50%,-50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%,-50%) scale(1.4); opacity: 0.6; }
}

.preloader-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
}
.preloader-bar-wrap {
  width: 200px;
  height: 2px;
  background: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: hidden;
}
.preloader-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00FFB2, #00D9FF, #7B61FF);
  border-radius: 99px;
  transition: width 0.3s ease;
}
.preloader-logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, #00FFB2, #00D9FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: -1rem;
}

/* ════════════════════════════════
   SCROLL PROGRESS BAR
════════════════════════════════ */
#scrollProgress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 100%;
  z-index: 9000;
  background: transparent;
  pointer-events: none;
}
#scrollProgress::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: var(--scroll-pct, 0%);
  background: linear-gradient(90deg, #00FFB2, #00D9FF, #7B61FF);
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 12px rgba(0,255,178,0.6);
  transition: width 0.05s linear;
}

/* ════════════════════════════════
   CUSTOM CURSOR
════════════════════════════════ */
#cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00FFB2;
  box-shadow: 0 0 12px #00FFB2, 0 0 24px rgba(0,255,178,0.5);
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, background 0.2s, box-shadow 0.2s;
  mix-blend-mode: screen;
}
#cursor-ring {
  position: fixed;
  top: 0; left: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(0,255,178,0.5);
  pointer-events: none;
  z-index: 99998;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, border-color 0.3s, border-width 0.3s;
  backdrop-filter: invert(0.05);
}

/* Hover states */
body.cursor-hover #cursor-dot {
  width: 14px;
  height: 14px;
  background: #00D9FF;
  box-shadow: 0 0 20px #00D9FF, 0 0 40px rgba(0,217,255,0.4);
}
body.cursor-hover #cursor-ring {
  width: 50px;
  height: 50px;
  border-color: rgba(0,217,255,0.6);
  border-width: 2px;
}
body.cursor-click #cursor-dot {
  width: 6px;
  height: 6px;
}
body.cursor-click #cursor-ring {
  width: 24px;
  height: 24px;
  border-color: #00FFB2;
}

/* Cursor trail */
.cursor-trail {
  position: fixed;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 99997;
  transform: translate(-50%,-50%);
  background: rgba(0,255,178,0.4);
  animation: trailFade 0.6s ease forwards;
}
@keyframes trailFade {
  to { opacity: 0; transform: translate(-50%,-50%) scale(0); }
}

/* ════════════════════════════════
   PAGE TRANSITION OVERLAY
════════════════════════════════ */
#pageTransition {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: linear-gradient(135deg, #060608 0%, #0f0f1a 100%);
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}
#pageTransition.entering {
  transform: scaleY(1);
  transform-origin: bottom;
  transition: transform 0.5s cubic-bezier(0.76,0,0.24,1);
}
#pageTransition.leaving {
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.5s cubic-bezier(0.76,0,0.24,1);
}

/* ════════════════════════════════
   PARALLAX LAYERS
════════════════════════════════ */
.hero {
  overflow: visible;
}
.parallax-stars {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}
.parallax-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,178,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,178,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
  animation: gridDrift 30s linear infinite;
}
@keyframes gridDrift {
  from { background-position: 0 0; }
  to   { background-position: 80px 80px; }
}

/* ════════════════════════════════
   FLOATING DOM PARTICLES (hero)
════════════════════════════════ */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(-100vh) translateX(var(--drift, 0px)) scale(0.3); opacity: 0; }
}

/* ════════════════════════════════
   GSAP REVEAL CLASSES
════════════════════════════════ */
.gsap-reveal {
  opacity: 0;
  transform: translateY(50px);
}
.gsap-reveal-left {
  opacity: 0;
  transform: translateX(-50px);
}
.gsap-reveal-right {
  opacity: 0;
  transform: translateX(50px);
}
.gsap-reveal-scale {
  opacity: 0;
  transform: scale(0.8);
}

/* ════════════════════════════════
   TYPEWRITER CURSOR
════════════════════════════════ */
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: #00FFB2;
  margin-left: 4px;
  animation: typewriterBlink 1s step-end infinite;
  vertical-align: text-bottom;
}
@keyframes typewriterBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ════════════════════════════════
   MAGNETIC BUTTON WRAPPER
════════════════════════════════ */
.magnetic-wrap {
  display: inline-block;
  position: relative;
}

/* ════════════════════════════════
   GLITCH TEXT
════════════════════════════════ */
.glitch {
  position: relative;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  -webkit-background-clip: text;
  background-clip: text;
}
.glitch::before {
  background: linear-gradient(135deg, #00FFB2, #00D9FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: glitchA 4s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
  transform: translateX(-3px);
}
.glitch::after {
  background: linear-gradient(135deg, #7B61FF, #00D9FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: glitchB 4s infinite 0.1s;
  clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%);
  transform: translateX(3px);
}
@keyframes glitchA {
  0%, 90%, 100% { opacity: 0; transform: translateX(0); }
  91% { opacity: 0.8; transform: translateX(-4px); }
  92% { opacity: 0; }
  93% { opacity: 0.7; transform: translateX(4px); }
  94% { opacity: 0; }
}
@keyframes glitchB {
  0%, 90%, 100% { opacity: 0; transform: translateX(0); }
  91% { opacity: 0.8; transform: translateX(4px); }
  92% { opacity: 0; }
  93% { opacity: 0.7; transform: translateX(-3px); }
  94% { opacity: 0; }
}

/* ════════════════════════════════
   AMBIENT GLOW ORBS (background)
════════════════════════════════ */
.ambient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  animation: cellPulse 8s ease-in-out infinite;
}
.ambient-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,255,178,0.08) 0%, transparent 70%);
  top: -20%; right: -10%;
  animation-delay: 0s;
}
.ambient-orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(123,97,255,0.09) 0%, transparent 70%);
  bottom: -20%; left: -10%;
  animation-delay: -2s;
}
.ambient-orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,217,255,0.07) 0%, transparent 70%);
  top: 40%; left: 40%;
  animation-delay: -4s;
}
@keyframes cellPulse {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
  25%       { transform: translate(20px, -20px) scale(1.15); opacity: 0.9; }
  50%       { transform: translate(-10px, 10px) scale(0.95); opacity: 0.6; }
  75%       { transform: translate(15px, -15px) scale(1.08); opacity: 0.8; }
}

/* ════════════════════════════════
   SECTION ENTRANCE (enhanced)
════════════════════════════════ */
.stagger-child {
  opacity: 0;
  transform: translateY(30px);
}

/* counter number wrap */
.stat-num {
  display: inline-block;
}

/* ════════════════════════════════
   SMOOTH SCROLL HINT ANIMATION
════════════════════════════════ */
.hero-scroll-hint {
  animation: fadeInUp 1s ease 2s both;
}

/* ════════════════════════════════
   THEME TOGGLE BUTTON
════════════════════════════════ */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--clr-text-dim);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: rgba(0,255,178,0.1);
  border-color: rgba(0,255,178,0.3);
  color: #00FFB2;
  transform: rotate(180deg);
}

/* ════════════════════════════════
   BOOKMARK ANIMATION
════════════════════════════════ */
@keyframes bookmarkPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); }
  100% { transform: scale(1); }
}
.bookmarked {
  animation: bookmarkPop 0.3s ease;
  color: #FFD700 !important;
}

/* ════════════════════════════════
   MOBILE RESPONSIVE
════════════════════════════════ */
@media (max-width: 768px) {
  #cursor-dot, #cursor-ring { display: none; }
  * { cursor: auto !important; }
  .ambient-orb { display: none; }
}