/* components-loading.css */
/* Loading / Spinner 加载组件 - 玻璃风格 */

:root {
  --blue-main: #2563ff;
  --blue-soft: #e5edff;
  --blue-deep: #1d4ed8;
}

/* 基础 Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(37, 99, 255, 0.2);
  border-top-color: var(--blue-main);
  border-radius: 999px;
  animation: spinner-rotate 0.8s linear infinite;
}

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

/* Spinner 尺寸 */
.spinner.is-xs {
  width: 14px;
  height: 14px;
  border-width: 1.5px;
}

.spinner.is-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner.is-lg {
  width: 28px;
  height: 28px;
  border-width: 3px;
}

.spinner.is-xl {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* Spinner 颜色变体 */
.spinner.is-white {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
}

.spinner.is-gray {
  border-color: rgba(148, 163, 184, 0.3);
  border-top-color: #64748b;
}

.spinner.is-success {
  border-color: rgba(34, 197, 94, 0.2);
  border-top-color: #22c55e;
}

/* 点状加载 */
.loading-dots {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--blue-main);
  animation: loading-dots-bounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes loading-dots-bounce {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* 脉冲加载 */
.loading-pulse {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--blue-main);
  animation: loading-pulse 1.2s ease-in-out infinite;
}

@keyframes loading-pulse {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.5;
  }
  100% {
    transform: scale(0.8);
    opacity: 1;
  }
}

/* 条形加载 */
.loading-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
  height: 20px;
}

.loading-bars span {
  width: 3px;
  height: 100%;
  border-radius: 2px;
  background: var(--blue-main);
  animation: loading-bars-stretch 1s ease-in-out infinite;
}

.loading-bars span:nth-child(1) {
  animation-delay: -0.4s;
}

.loading-bars span:nth-child(2) {
  animation-delay: -0.2s;
}

.loading-bars span:nth-child(3) {
  animation-delay: 0s;
}

.loading-bars span:nth-child(4) {
  animation-delay: 0.2s;
}

@keyframes loading-bars-stretch {
  0%, 40%, 100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}

/* 加载文字组合 */
.loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #6b7280;
}

/* 全屏加载遮罩 */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.loading-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.loading-overlay .spinner {
  width: 36px;
  height: 36px;
  border-width: 3px;
}

.loading-overlay-text {
  font-size: 13px;
  color: #6b7280;
}

/* 区域加载 - 相对定位容器 */
.loading-wrapper {
  position: relative;
}

.loading-mask {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: inherit;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.loading-wrapper.is-loading .loading-mask {
  opacity: 1;
  visibility: visible;
}

/* 按钮内加载态 */
.btn.is-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 999px;
  animation: spinner-rotate 0.8s linear infinite;
}

.btn-secondary.is-loading::after,
.btn-outline.is-loading::after,
.btn-ghost.is-loading::after {
  border-color: rgba(37, 99, 255, 0.2);
  border-top-color: var(--blue-main);
}

/* 圆环进度加载 */
.loading-ring {
  position: relative;
  width: 40px;
  height: 40px;
}

.loading-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.loading-ring-track {
  fill: none;
  stroke: rgba(37, 99, 255, 0.15);
  stroke-width: 3;
}

.loading-ring-progress {
  fill: none;
  stroke: var(--blue-main);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 75;
  animation: loading-ring-spin 1.5s ease-in-out infinite;
}

@keyframes loading-ring-spin {
  0% {
    stroke-dashoffset: 75;
    transform: rotate(0deg);
  }
  50% {
    stroke-dashoffset: 25;
  }
  100% {
    stroke-dashoffset: 75;
    transform: rotate(360deg);
  }
}

/* Logo / 品牌加载动画 */
.loading-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loading-logo-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-main), #4f8dff);
  animation: loading-logo-pulse 1.5s ease-in-out infinite;
  box-shadow: 0 8px 24px rgba(37, 99, 255, 0.25);
}

@keyframes loading-logo-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}