/* TG-Image高级加载动画系统 - 超级加载库 */

:root {
  --loader-primary: var(--primary-color);
  --loader-primary-light: var(--primary-light);
  --loader-primary-dark: var(--primary-dark);
  --loader-secondary: var(--secondary-color);
  --loader-accent: var(--accent-color);
  --loader-white: #ffffff;
  --loader-black: #000000;
  
  --loader-size-xs: 24px;
  --loader-size-sm: 32px;
  --loader-size: 48px;
  --loader-size-lg: 64px;
  --loader-size-xl: 96px;
  
  --loader-border-width: 4px;
  --loader-border-width-sm: 3px;
  --loader-border-width-lg: 5px;
  
  --loader-speed-slow: 2s;
  --loader-speed: 1.2s;
  --loader-speed-fast: 0.8s;
  
  --loader-bg: rgba(255, 255, 255, 0.1);
  --loader-bg-dark: rgba(0, 0, 0, 0.1);
}

/* 1. 经典旋转加载器 */
.premium-loader-spinner {
  width: var(--loader-size);
  height: var(--loader-size);
  border: var(--loader-border-width) solid var(--loader-bg);
  border-radius: 50%;
  border-top-color: var(--loader-primary);
  animation: spin var(--loader-speed) linear infinite;
  display: inline-block;
}

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

/* 尺寸变体 */
.premium-loader-spinner-sm {
  width: var(--loader-size-sm);
  height: var(--loader-size-sm);
  border-width: var(--loader-border-width-sm);
}

.premium-loader-spinner-lg {
  width: var(--loader-size-lg);
  height: var(--loader-size-lg);
  border-width: var(--loader-border-width-lg);
}

/* 颜色变体 */
.premium-loader-spinner-secondary {
  border-top-color: var(--loader-secondary);
}

.premium-loader-spinner-accent {
  border-top-color: var(--loader-accent);
}

/* 深色模式适配 */
body.dark-mode .premium-loader-spinner {
  border-color: var(--loader-bg-dark);
}

/* 2. 双圈旋转加载器 */
.premium-loader-dual-ring {
  width: var(--loader-size);
  height: var(--loader-size);
  display: inline-block;
  position: relative;
}

.premium-loader-dual-ring::after,
.premium-loader-dual-ring::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: var(--loader-border-width) solid transparent;
  animation: spin var(--loader-speed) linear infinite;
}

.premium-loader-dual-ring::after {
  border-top-color: var(--loader-primary);
  border-bottom-color: var(--loader-primary-light);
}

.premium-loader-dual-ring::before {
  border-left-color: var(--loader-primary);
  border-right-color: var(--loader-primary-light);
  animation-duration: calc(var(--loader-speed) * 0.8);
  animation-direction: reverse;
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
}

/* 3. 脉冲加载器 */
.premium-loader-pulse {
  width: var(--loader-size);
  height: var(--loader-size);
  background-color: var(--loader-primary);
  border-radius: 50%;
  animation: pulse var(--loader-speed) cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
  display: inline-block;
}

@keyframes pulse {
  0% {
    transform: scale(0.8);
    opacity: 0.8;
  }
  50% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(0.8);
    opacity: 0.8;
  }
}

/* 4. 多圈波纹加载器 */
.premium-loader-ripple {
  width: var(--loader-size);
  height: var(--loader-size);
  position: relative;
  display: inline-block;
}

.premium-loader-ripple div {
  position: absolute;
  border: var(--loader-border-width) solid var(--loader-primary);
  opacity: 1;
  border-radius: 50%;
  animation: ripple var(--loader-speed-slow) cubic-bezier(0, 0.2, 0.8, 1) infinite;
}

.premium-loader-ripple div:nth-child(2) {
  animation-delay: -0.5s;
}

@keyframes ripple {
  0% {
    top: calc(var(--loader-size) / 2 - var(--loader-border-width));
    left: calc(var(--loader-size) / 2 - var(--loader-border-width));
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    top: 0;
    left: 0;
    width: calc(var(--loader-size) - (var(--loader-border-width) * 2));
    height: calc(var(--loader-size) - (var(--loader-border-width) * 2));
    opacity: 0;
  }
}

/* 5. 渐变旋转加载器 */
.premium-loader-rainbow {
  width: var(--loader-size);
  height: var(--loader-size);
  border-radius: 50%;
  display: inline-block;
  position: relative;
  background: conic-gradient(
    from 0deg,
    var(--loader-primary-light),
    var(--loader-accent),
    var(--loader-secondary),
    var(--loader-primary-dark),
    var(--loader-primary-light)
  );
  animation: spin var(--loader-speed-slow) linear infinite;
}

.premium-loader-rainbow::after {
  content: '';
  position: absolute;
  top: var(--loader-border-width);
  left: var(--loader-border-width);
  right: var(--loader-border-width);
  bottom: var(--loader-border-width);
  background: var(--card-bg);
  border-radius: 50%;
}

body.dark-mode .premium-loader-rainbow::after {
  background: var(--dark-card-bg);
}

/* 6. 弹跳点加载器 */
.premium-loader-dots {
  display: inline-flex;
  align-items: center;
  height: var(--loader-size);
}

.premium-loader-dots div {
  width: calc(var(--loader-size) / 4);
  height: calc(var(--loader-size) / 4);
  margin: 0 4px;
  background-color: var(--loader-primary);
  border-radius: 50%;
  display: inline-block;
  animation: bounce var(--loader-speed) ease-in-out infinite;
}

.premium-loader-dots div:nth-child(1) {
  animation-delay: -0.32s;
}

.premium-loader-dots div:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes bounce {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* 7. 流动线条加载器 */
.premium-loader-line {
  position: relative;
  width: var(--loader-size);
  height: calc(var(--loader-size) / 8);
  background: var(--loader-bg);
  overflow: hidden;
  border-radius: var(--radius-full);
  display: inline-block;
}

.premium-loader-line::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, var(--loader-primary), transparent);
  animation: line var(--loader-speed) ease-in-out infinite;
}

@keyframes line {
  0% {
    left: -50%;
  }
  100% {
    left: 150%;
  }
}

body.dark-mode .premium-loader-line {
  background: var(--loader-bg-dark);
}

/* 8. 旋转立方体加载器 */
.premium-loader-cube {
  width: var(--loader-size);
  height: var(--loader-size);
  perspective: 120px;
  display: inline-block;
  position: relative;
}

.premium-loader-cube-inner {
  width: 50%;
  height: 50%;
  position: absolute;
  top: 25%;
  left: 25%;
  animation: cube var(--loader-speed-slow) infinite;
  background-color: var(--loader-primary);
}

@keyframes cube {
  0% {
    transform: rotateX(0deg) rotateY(0deg);
  }
  25% {
    transform: rotateX(180deg) rotateY(0deg);
  }
  50% {
    transform: rotateX(180deg) rotateY(180deg);
  }
  75% {
    transform: rotateX(0deg) rotateY(180deg);
  }
  100% {
    transform: rotateX(0deg) rotateY(0deg);
  }
}

/* 9. 三角形加载器 */
.premium-loader-triangle {
  width: var(--loader-size);
  height: var(--loader-size);
  display: inline-block;
  position: relative;
}

.premium-loader-triangle div {
  position: absolute;
  width: 10%;
  height: 10%;
  background-color: var(--loader-primary);
  border-radius: 50%;
  animation: triangle var(--loader-speed) ease-in-out infinite;
}

.premium-loader-triangle div:nth-child(1) {
  top: 0;
  left: 45%;
  background-color: var(--loader-primary-light);
}

.premium-loader-triangle div:nth-child(2) {
  bottom: 10%;
  left: 15%;
  animation-delay: -0.3s;
  background-color: var(--loader-secondary);
}

.premium-loader-triangle div:nth-child(3) {
  bottom: 10%;
  right: 15%;
  animation-delay: -0.6s;
  background-color: var(--loader-accent);
}

@keyframes triangle {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.5);
  }
}

/* 10. 圆环进度条加载器 */
.premium-loader-circle-progress {
  width: var(--loader-size);
  height: var(--loader-size);
  display: inline-block;
  position: relative;
}

.premium-loader-circle-progress svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.premium-loader-circle-progress circle {
  fill: transparent;
  stroke-width: var(--loader-border-width);
  stroke-dasharray: 283;
  stroke-linecap: round;
  transform-origin: center;
}

.premium-loader-circle-progress .bg {
  stroke: var(--loader-bg);
}

.premium-loader-circle-progress .fg {
  stroke: var(--loader-primary);
  animation: circle-progress var(--loader-speed) ease-in-out infinite;
}

@keyframes circle-progress {
  0% {
    stroke-dashoffset: 283;
  }
  50% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: 283;
  }
}

body.dark-mode .premium-loader-circle-progress .bg {
  stroke: var(--loader-bg-dark);
}

/* 11. 点阵加载器 */
.premium-loader-grid {
  width: var(--loader-size);
  height: var(--loader-size);
  display: inline-block;
  position: relative;
}

.premium-loader-grid div {
  position: absolute;
  width: 25%;
  height: 25%;
  background-color: var(--loader-primary);
  border-radius: 2px;
  animation: grid var(--loader-speed) ease infinite;
}

.premium-loader-grid div:nth-child(1) {
  top: 12.5%;
  left: 12.5%;
  animation-delay: 0s;
}

.premium-loader-grid div:nth-child(2) {
  top: 12.5%;
  left: 37.5%;
  animation-delay: 0.1s;
}

.premium-loader-grid div:nth-child(3) {
  top: 12.5%;
  left: 62.5%;
  animation-delay: 0.2s;
}

.premium-loader-grid div:nth-child(4) {
  top: 37.5%;
  left: 12.5%;
  animation-delay: 0.3s;
}

.premium-loader-grid div:nth-child(5) {
  top: 37.5%;
  left: 37.5%;
  animation-delay: 0.4s;
}

.premium-loader-grid div:nth-child(6) {
  top: 37.5%;
  left: 62.5%;
  animation-delay: 0.5s;
}

.premium-loader-grid div:nth-child(7) {
  top: 62.5%;
  left: 12.5%;
  animation-delay: 0.6s;
}

.premium-loader-grid div:nth-child(8) {
  top: 62.5%;
  left: 37.5%;
  animation-delay: 0.7s;
}

.premium-loader-grid div:nth-child(9) {
  top: 62.5%;
  left: 62.5%;
  animation-delay: 0.8s;
}

@keyframes grid {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.2;
  }
}

/* 12. 霓虹文字加载器 */
.premium-loader-text {
  font-size: calc(var(--loader-size) / 3);
  font-weight: bold;
  display: inline-block;
  position: relative;
  color: var(--loader-primary);
  text-shadow: 0 0 10px rgba(var(--primary-light-rgb), 0.5);
  animation: text-pulse var(--loader-speed) ease-in-out infinite;
}

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

/* 13. 渐变边框加载器 */
.premium-loader-border-gradient {
  width: var(--loader-size);
  height: var(--loader-size);
  border-radius: 50%;
  display: inline-block;
  position: relative;
  padding: var(--loader-border-width);
  background: linear-gradient(
    45deg,
    var(--loader-primary),
    var(--loader-accent),
    var(--loader-secondary),
    var(--loader-primary)
  );
  background-size: 400% 400%;
  animation: gradient-move var(--loader-speed-slow) ease infinite;
}

.premium-loader-border-gradient::after {
  content: '';
  position: absolute;
  top: var(--loader-border-width);
  left: var(--loader-border-width);
  right: var(--loader-border-width);
  bottom: var(--loader-border-width);
  background: var(--card-bg);
  border-radius: 50%;
}

body.dark-mode .premium-loader-border-gradient::after {
  background: var(--dark-card-bg);
}

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

/* 14. 滚动条加载器 */
.premium-loader-bar {
  width: var(--loader-size);
  height: calc(var(--loader-size) / 6);
  background: var(--loader-bg);
  display: inline-block;
  position: relative;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.premium-loader-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 30%;
  background: var(--loader-primary);
  border-radius: var(--radius-full);
  animation: bar var(--loader-speed) ease-in-out infinite;
}

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

body.dark-mode .premium-loader-bar {
  background: var(--loader-bg-dark);
}

/* 15. 分形加载器 */
.premium-loader-fractal {
  width: var(--loader-size);
  height: var(--loader-size);
  position: relative;
  display: inline-block;
}

.premium-loader-fractal div {
  position: absolute;
  width: 50%;
  height: 50%;
  background: var(--loader-primary);
  animation: fractal var(--loader-speed-slow) ease infinite;
}

.premium-loader-fractal div:nth-child(1) {
  top: 0;
  left: 0;
  animation-delay: -0.6s;
  background: var(--loader-primary-light);
}

.premium-loader-fractal div:nth-child(2) {
  top: 0;
  right: 0;
  animation-delay: -0.4s;
  background: var(--loader-secondary);
}

.premium-loader-fractal div:nth-child(3) {
  bottom: 0;
  left: 0;
  animation-delay: -0.2s;
  background: var(--loader-accent);
}

.premium-loader-fractal div:nth-child(4) {
  bottom: 0;
  right: 0;
  animation-delay: 0s;
  background: var(--loader-primary-dark);
}

@keyframes fractal {
  0%, 100% {
    transform: scale(0.5);
  }
  50% {
    transform: scale(1);
  }
}

/* 16. 水波加载器 */
.premium-loader-wave {
  width: var(--loader-size);
  height: calc(var(--loader-size) / 2);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.premium-loader-wave div {
  width: calc(var(--loader-size) / 10);
  background: var(--loader-primary);
  animation: wave var(--loader-speed) ease-in-out infinite;
}

.premium-loader-wave div:nth-child(2) {
  animation-delay: -0.9s;
  background: var(--loader-primary-light);
}

.premium-loader-wave div:nth-child(3) {
  animation-delay: -0.8s;
  background: var(--loader-secondary);
}

.premium-loader-wave div:nth-child(4) {
  animation-delay: -0.7s;
  background: var(--loader-accent);
}

.premium-loader-wave div:nth-child(5) {
  animation-delay: -0.6s;
  background: var(--loader-primary-dark);
}

@keyframes wave {
  0%, 100% {
    height: 20%;
  }
  50% {
    height: 100%;
  }
}

/* 17. 字符串加载器 */
.premium-loader-typing {
  width: var(--loader-size);
  height: calc(var(--loader-size) / 4);
  background: var(--loader-primary);
  border-radius: var(--radius-full);
  margin: 0 calc(var(--loader-size) / 16);
  animation: typing var(--loader-speed) infinite;
  display: inline-block;
}

.premium-loader-typing:nth-child(1) {
  animation-delay: 0.2s;
}

.premium-loader-typing:nth-child(2) {
  animation-delay: 0.4s;
}

.premium-loader-typing:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes typing {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* 18. 螺旋加载器 */
.premium-loader-spiral {
  width: var(--loader-size);
  height: var(--loader-size);
  border-radius: 50%;
  border: var(--loader-border-width) solid transparent;
  border-top-color: var(--loader-primary-light);
  border-right-color: var(--loader-primary);
  border-bottom-color: var(--loader-primary-dark);
  animation: spin var(--loader-speed) linear infinite;
  display: inline-block;
}

.premium-loader-spiral::before,
.premium-loader-spiral::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: var(--loader-border-width) solid transparent;
}

.premium-loader-spiral::before {
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-top-color: var(--loader-secondary);
  border-right-color: var(--loader-secondary-light);
  border-bottom-color: var(--loader-secondary);
  animation: spin var(--loader-speed) linear infinite reverse;
}

.premium-loader-spiral::after {
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border-top-color: var(--loader-accent);
  border-right-color: var(--loader-accent-light);
  border-bottom-color: var(--loader-accent);
  animation: spin var(--loader-speed) linear infinite;
}

/* 19. 翻转卡片加载器 */
.premium-loader-flip {
  width: var(--loader-size);
  height: var(--loader-size);
  perspective: 300px;
  display: inline-block;
}

.premium-loader-flip-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  animation: flip var(--loader-speed-slow) infinite;
}

.premium-loader-flip-front,
.premium-loader-flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 4px;
}

.premium-loader-flip-front {
  background: var(--loader-primary);
}

.premium-loader-flip-back {
  background: var(--loader-secondary);
  transform: rotateY(180deg);
}

@keyframes flip {
  0% {
    transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(180deg);
  }
  100% {
    transform: rotateY(360deg);
  }
}

/* 20. 步进加载器 */
.premium-loader-stepped {
  width: var(--loader-size);
  height: var(--loader-size);
  display: inline-block;
  position: relative;
}

.premium-loader-stepped div {
  position: absolute;
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
  background: transparent;
  border: var(--loader-border-width) solid var(--loader-primary);
  border-radius: 50%;
  animation: stepped var(--loader-speed-slow) cubic-bezier(0.86, 0, 0.07, 1) infinite;
}

.premium-loader-stepped div:nth-child(1) {
  animation-delay: -0.6s;
}

.premium-loader-stepped div:nth-child(2) {
  animation-delay: -0.4s;
}

.premium-loader-stepped div:nth-child(3) {
  animation-delay: -0.2s;
}

@keyframes stepped {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 全屏加载容器 */
.premium-loader-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background-color: var(--bg-color);
  z-index: 9999;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.dark-mode .premium-loader-container {
  background-color: var(--dark-bg);
}

.premium-loader-container.hidden {
  opacity: 0;
  visibility: hidden;
}

.premium-loader-text {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--text-color);
}

body.dark-mode .premium-loader-text {
  color: var(--dark-text);
}

/* 内联加载容器 */
.premium-loader-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.premium-loader-inline .premium-loader-text {
  margin: 0 0 0 1rem;
}

/* 加载进度条 */
.premium-loader-progress {
  width: var(--loader-size);
  height: calc(var(--loader-size) / 8);
  background-color: var(--loader-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  margin-top: 1rem;
}

.premium-loader-progress-bar {
  height: 100%;
  background-color: var(--loader-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

body.dark-mode .premium-loader-progress {
  background-color: var(--loader-bg-dark);
}

/* 媒体查询 - 响应式调整 */
@media (max-width: 768px) {
  :root {
    --loader-size-xs: 20px;
    --loader-size-sm: 24px;
    --loader-size: 36px;
    --loader-size-lg: 48px;
    --loader-size-xl: 64px;
  }
}

/* 辅助功能支持 */
@media (prefers-reduced-motion: reduce) {
  .premium-loader-spinner,
  .premium-loader-dual-ring::after,
  .premium-loader-dual-ring::before,
  .premium-loader-pulse,
  .premium-loader-ripple div,
  .premium-loader-rainbow,
  .premium-loader-dots div,
  .premium-loader-line::before,
  .premium-loader-cube-inner,
  .premium-loader-triangle div,
  .premium-loader-circle-progress .fg,
  .premium-loader-grid div,
  .premium-loader-text,
  .premium-loader-border-gradient,
  .premium-loader-bar::before,
  .premium-loader-fractal div,
  .premium-loader-wave div,
  .premium-loader-typing,
  .premium-loader-spiral,
  .premium-loader-spiral::before,
  .premium-loader-spiral::after,
  .premium-loader-flip-inner,
  .premium-loader-stepped div {
    animation: none !important;
  }
}