/*
 * ==========================================
 * 小雨微寒 · 高级动画效果
 * ==========================================
 * Premium Animations & Micro-interactions
 */

/* ========== Keyframe Animations ========== */

/* Float Animation */
@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(20px, -20px) rotate(5deg);
  }
  50% {
    transform: translate(-10px, 10px) rotate(-5deg);
  }
  75% {
    transform: translate(15px, 5px) rotate(3deg);
  }
}

/* Pulse Animation */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.5;
  }
}

/* Cloud Float Animation */
@keyframes cloudFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In Down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In Scale */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Bounce In */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

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

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

/* Shimmer */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Glow Pulse */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(96, 165, 250, 0.6);
  }
}

/* Gradient Shift */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ========== Toast Transitions ========== */
.toast-enter-active {
  animation: slideInRight 0.3s ease-out;
}

.toast-leave-active {
  animation: slideInRight 0.3s ease-in reverse;
}

/* ========== Modal & Toast Animations ========== */
.modal-enter {
  animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-leave {
  animation: modalSlideOut 0.25s ease-in reverse;
}

.modal-enter-active .modal-container {
  animation: bounceIn 0.4s ease-out;
}

/* ========== View Transitions ========== */
.view-section {
  animation: fadeInUp 0.5s ease-out;
}

/* ========== Button Ripple Effect ========== */
.primary-btn::before,
.secondary-btn::before,
.icon-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.primary-btn:active::before,
.secondary-btn:active::before,
.icon-btn:active::before {
  width: 300px;
  height: 300px;
}

/* ========== Loading Spinner ========== */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ========== Skeleton Loading ========== */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-secondary) 0%,
    var(--bg-tertiary) 50%,
    var(--bg-secondary) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

/* ========== Hover Effects ========== */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

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

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

/* ========== Stagger Animations ========== */
.stagger-item {
  opacity: 0;
  animation: fadeInUp 0.5s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }
.stagger-item:nth-child(7) { animation-delay: 0.7s; }
.stagger-item:nth-child(8) { animation-delay: 0.8s; }
.stagger-item:nth-child(9) { animation-delay: 0.9s; }
.stagger-item:nth-child(10) { animation-delay: 1s; }

/* ========== Gradient Animation ========== */
.animated-gradient {
  background: linear-gradient(
    -45deg,
    #667eea,
    #764ba2,
    #f093fb,
    #4facfe
  );
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

/* ========== Text Shimmer ========== */
.text-shimmer {
  background: linear-gradient(
    90deg,
    var(--text-secondary) 0%,
    var(--text-primary) 50%,
    var(--text-secondary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

/* ========== Pulsing Dot ========== */
.pulsing-dot {
  position: relative;
}

.pulsing-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: currentColor;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

/* ========== Progress Bar ========== */
@keyframes progress {
  from {
    width: 0%;
  }
  to {
    width: 100%;
  }
}

.progress-bar {
  position: relative;
  height: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--gradient-primary);
  animation: progress 2s ease-out forwards;
}

/* ========== Entrance Animations ========== */
.fade-in {
  animation: fadeInUp 0.6s ease-out;
}

.slide-in {
  animation: slideInRight 0.6s ease-out;
}

.bounce-in {
  animation: bounceIn 0.6s ease-out;
}

/* ========== Focus States ========== */
input:focus,
textarea:focus,
select:focus,
button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.3);
}

/* ========== Smooth Transitions ========== */
* {
  transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform;
  transition-duration: var(--transition-base);
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Disable transitions on page load */
.preload * {
  transition: none !important;
}

/* ========== Micro Interactions ========== */
@media (hover: hover) {
  .interactive {
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .interactive:hover {
    transform: translateY(-2px);
  }
  
  .interactive:active {
    transform: translateY(0);
  }
}

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}