/* ==========================================================================
   GZTONGCHEN.COM - Animations Library
   ========================================================================== */

/* Loading screen
   ========================================================================== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-logo {
  width: 80px;
  height: 80px;
  position: relative;
}

.loader-logo svg {
  width: 100%;
  height: 100%;
  animation: rotate 2s linear infinite;
}

.loader-text {
  font-size: 14px;
  color: var(--color-text-2);
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.loader-progress {
  width: 200px;
  height: 2px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.loader-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 30%;
  background: var(--gradient-primary);
  animation: loaderSlide 1.5s ease-in-out infinite;
}

@keyframes loaderSlide {
  0% { left: -30%; }
  100% { left: 100%; }
}

/* Fade in on page load
   ========================================================================== */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.fade-in-down {
  animation: fadeInDown 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.fade-in-right {
  animation: fadeInRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.scale-in {
  animation: scaleIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.float {
  animation: float 4s ease-in-out infinite;
}

.rotate {
  animation: rotate 20s linear infinite;
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

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

/* Stagger delays */
.stagger-1 { animation-delay: 0.1s; opacity: 0; }
.stagger-2 { animation-delay: 0.2s; opacity: 0; }
.stagger-3 { animation-delay: 0.3s; opacity: 0; }
.stagger-4 { animation-delay: 0.4s; opacity: 0; }
.stagger-5 { animation-delay: 0.5s; opacity: 0; }
.stagger-6 { animation-delay: 0.6s; opacity: 0; }
.stagger-7 { animation-delay: 0.7s; opacity: 0; }
.stagger-8 { animation-delay: 0.8s; opacity: 0; }

/* Typing effect
   ========================================================================== */
.typing-text {
  display: inline-block;
  font-family: var(--font-mono);
  position: relative;
}

.typing-text::after {
  content: '|';
  position: absolute;
  right: -8px;
  color: var(--color-primary);
  animation: blink 1s step-end infinite;
}

/* Glitch effect
   ========================================================================== */
.glitch {
  position: relative;
  display: inline-block;
}

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

.glitch::before {
  left: 2px;
  text-shadow: -2px 0 var(--color-primary);
  animation: glitch-1 2s infinite linear alternate-reverse;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
  opacity: 0.8;
}

.glitch::after {
  left: -2px;
  text-shadow: -2px 0 var(--color-accent);
  animation: glitch-2 2s infinite linear alternate-reverse;
  clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
  opacity: 0.8;
}

@keyframes glitch-1 {
  0% { clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%); }
  20% { clip-path: polygon(0 15%, 100% 15%, 100% 30%, 0 30%); }
  40% { clip-path: polygon(0 50%, 100% 50%, 100% 60%, 0 60%); }
  60% { clip-path: polygon(0 25%, 100% 25%, 100% 70%, 0 70%); }
  80% { clip-path: polygon(0 70%, 100% 70%, 100% 90%, 0 90%); }
  100% { clip-path: polygon(0 40%, 100% 40%, 100% 55%, 0 55%); }
}

@keyframes glitch-2 {
  0% { clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%); }
  20% { clip-path: polygon(0 70%, 100% 70%, 100% 80%, 0 80%); }
  40% { clip-path: polygon(0 30%, 100% 30%, 100% 45%, 0 45%); }
  60% { clip-path: polygon(0 80%, 100% 80%, 100% 95%, 0 95%); }
  80% { clip-path: polygon(0 10%, 100% 10%, 100% 25%, 0 25%); }
  100% { clip-path: polygon(0 50%, 100% 50%, 100% 75%, 0 75%); }
}

/* Glow border on hover
   ========================================================================== */
.glow-border {
  position: relative;
  transition: var(--transition);
}

.glow-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--gradient-primary);
  border-radius: inherit;
  opacity: 0;
  z-index: -1;
  transition: var(--transition);
  filter: blur(8px);
}

.glow-border:hover::before {
  opacity: 0.5;
}

/* Hover lift
   ========================================================================== */
.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* Hover scale
   ========================================================================== */
.hover-scale {
  transition: var(--transition);
}

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

/* Hover rotate
   ========================================================================== */
.hover-rotate {
  transition: var(--transition);
}

.hover-rotate:hover {
  transform: rotate(5deg) scale(1.1);
}

/* Magnetic button effect
   ========================================================================== */
.magnetic {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Cursor follower effect
   ========================================================================== */
.cursor-glow {
  position: fixed;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease;
  mix-blend-mode: screen;
  opacity: 0;
}

.cursor-glow.active {
  opacity: 1;
}

.cursor-gollow.expanded {
  width: 80px;
  height: 80px;
}

/* Background pattern animations
   ========================================================================== */
.bg-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.5;
  animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
  0% {
    transform: translate(0, 100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.5;
    transform: translate(10px, 90vh) scale(1);
  }
  90% {
    opacity: 0.5;
  }
  100% {
    transform: translate(-20px, -10vh) scale(0);
    opacity: 0;
  }
}

/* Number counter animation
   ========================================================================== */
.counter {
  font-variant-numeric: tabular-nums;
}

/* Scroll-triggered animations
   ========================================================================== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), transform 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 1s ease, transform 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-left.in-view {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 1s ease, transform 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-right.in-view {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 1s ease, transform 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-scale.in-view {
  opacity: 1;
  transform: scale(1);
}

/* Parallax */
.parallax {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* Text reveal */
.text-reveal {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
}

.text-reveal-inner {
  display: inline-block;
  transform: translateY(100%);
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.text-reveal.in-view .text-reveal-inner {
  transform: translateY(0);
}

/* Hover line */
.hover-line {
  position: relative;
  display: inline-block;
}

.hover-line::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

.hover-line:hover::after {
  width: 100%;
}

/* Tooltip */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 6px 12px;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border-2);
  color: var(--color-text);
  font-size: 12px;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 1000;
}

[data-tooltip]:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Page transitions */
.page-transition-enter {
  opacity: 0;
  transform: translateY(20px);
}

.page-transition-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

@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;
  }
}