/* ===== 進階動畫效果 ===== */

/* 淡入動畫 */
.fade-in {
  opacity: 0;
  animation: fadeIn 0.3s ease-out forwards;
}

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

/* 向上滑入 */
.slide-up {
  opacity: 0;
  transform: translateY(40px);
  animation: slideUp 0.3s ease-out forwards;
}

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

/* 縮放進入 */
.scale-in {
  opacity: 0;
  transform: scale(0.9);
  animation: scaleIn 0.3s ease-out forwards;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 從左滑入 */
.slide-left {
  opacity: 0;
  transform: translateX(-40px);
  animation: slideLeft 0.3s ease-out forwards;
}

@keyframes slideLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 從右滑入 */
.slide-right {
  opacity: 0;
  transform: translateX(40px);
  animation: slideRight 0.3s ease-out forwards;
}

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

/* 旋轉進入 */
.rotate-in {
  opacity: 0;
  transform: rotate(-180deg) scale(0.5);
  transition: all 0.8s ease-out;
}

.rotate-in.animated {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* 彈跳進入 */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3) translateY(-100px);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

.bounce-in {
  animation: bounceIn 0.8s ease-out;
}

/* 打字機效果 */
@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink {
  50% { border-color: transparent; }
}

.typewriter {
  overflow: hidden;
  border-right: 3px solid var(--primary-color);
  white-space: nowrap;
  animation: typing 3.5s steps(40, end), blink 0.75s step-end infinite;
}

/* 霓虹燈效果 */
.neon-text {
  color: #fff;
  text-shadow:
    0 0 7px #fff,
    0 0 10px #fff,
    0 0 21px #fff,
    0 0 42px var(--primary-color),
    0 0 82px var(--primary-color),
    0 0 92px var(--primary-color),
    0 0 102px var(--primary-color),
    0 0 151px var(--primary-color);
  animation: neonFlicker 1.5s infinite alternate;
}

@keyframes neonFlicker {
  0%, 18%, 22%, 25%, 53%, 57%, 100% {
    text-shadow:
      0 0 7px #fff,
      0 0 10px #fff,
      0 0 21px #fff,
      0 0 42px var(--primary-color),
      0 0 82px var(--primary-color),
      0 0 92px var(--primary-color),
      0 0 102px var(--primary-color),
      0 0 151px var(--primary-color);
  }
  20%, 24%, 55% {
    text-shadow: none;
  }
}

/* 漸變動畫背景 */
.gradient-animation {
  background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 脈衝效果 */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* 彈跳效果 */
.bounce {
  animation: bounce 1s infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(-5%);
    animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
  }
  50% {
    transform: translateY(0);
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
  }
}

/* 搖晃效果 */
.shake {
  animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes shake {
  10%, 90% { transform: translate(-1px, 0); }
  20%, 80% { transform: translate(2px, 0); }
  30%, 50%, 70% { transform: translate(-4px, 0); }
  40%, 60% { transform: translate(4px, 0); }
}

/* 閃爍效果 */
.flash {
  animation: flash 1s;
}

@keyframes flash {
  0%, 50%, 100% { opacity: 1; }
  25%, 75% { opacity: 0; }
}

/* 心跳效果 */
.heartbeat {
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  10%, 30% { transform: scale(0.9); }
  20%, 40% { transform: scale(1.1); }
}

/* 載入動畫 */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.3s ease;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--bg-secondary);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 進度條動畫 */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-secondary);
  overflow: hidden;
  position: relative;
}

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

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

/* 回到頂部按鈕 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* Toast 通知 */
.toast {
  position: fixed;
  top: 100px;
  right: 30px;
  background: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 9999;
  transform: translateX(400px);
  transition: transform 0.3s ease;
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  border-left: 4px solid var(--success-color);
}

.toast-error {
  border-left: 4px solid var(--accent-color);
}

.toast-info {
  border-left: 4px solid var(--primary-color);
}

/* 閃光效果 */
.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  100% {
    left: 100%;
  }
}

/* 卡片翻轉效果 */
.flip-card {
  perspective: 1000px;
  width: 100%;
  height: 300px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-xl);
}

.flip-card-back {
  transform: rotateY(180deg);
}

/* 滾動進度指示器 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--primary-color);
  z-index: 9999;
  transform-origin: left;
  animation: progressGlow 2s ease-in-out infinite;
}

@keyframes progressGlow {
  0%, 100% {
    box-shadow: 0 0 5px var(--primary-color);
  }
  50% {
    box-shadow: 0 0 20px var(--primary-color);
  }
}

/* 懸停放大效果 */
.hover-grow {
  transition: transform 0.3s ease;
}

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

/* 懸停發光效果 */
.hover-glow {
  transition: all 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px var(--primary-color);
}

/* 邊框動畫 */
.border-animate {
  position: relative;
  background: white;
}

.border-animate::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderRotate 3s linear infinite;
}

@keyframes borderRotate {
  100% {
    transform: rotate(360deg);
  }
}

/* 文字漸變效果 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 浮動動畫 */
.float {
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* 延遲動畫類別 */
.delay-100 { animation-delay: 0.1s; transition-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; transition-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; transition-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; transition-delay: 0.5s; }