* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(ellipse 1400px 700px at 10% 0%, rgba(50,140,255,0.15), transparent 65%),
              radial-gradient(ellipse 1000px 500px at 90% 100%, rgba(0,200,255,0.1), transparent 60%),
              linear-gradient(150deg, $bg-0, $bg-1 45%, $bg-2);
  color: $text-primary;
  font-family: "DIN Alternate","Alibaba PuHuiTi","PingFang SC","Microsoft YaHei",sans-serif;
}

#app {
  width: 100%;
  height: 100%;
  position: relative;
}

// 滚动条样式
::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}
::-webkit-scrollbar-thumb {
  background: $border-color;
  border-radius: 2px;

  &:hover {
    background: $accent;
    box-shadow: 0 0 8px rgba(72,215,255,0.4);
  }
}
::-webkit-scrollbar-track {
  background: transparent;
}

// ======================== 视口缩放容器 ========================
.viewport {
  width: 100%;
  height: 100%;
  position: relative;
}

.screen {
  width: 1920px;
  height: 1080px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform-origin: center center;
  overflow: hidden;
}

// 科技网格叠加
.screen::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(72,180,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(72,180,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(0,0,0,0.5) 0%, transparent 100%);
}

// 环境浮动粒子
.screen::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(1.5px 1.5px at 15% 25%, rgba(72,215,255,0.5), transparent),
    radial-gradient(1px 1px at 85% 15%, rgba(72,215,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 45% 80%, rgba(58,123,255,0.4), transparent),
    radial-gradient(1px 1px at 70% 55%, rgba(72,215,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 25% 60%, rgba(100,200,255,0.35), transparent),
    radial-gradient(1px 1px at 90% 75%, rgba(72,215,255,0.3), transparent);
  animation: particleDrift 20s ease-in-out infinite alternate;
}

@keyframes particleDrift {
  0% { transform: translate(0, 0); opacity: 0.6; }
  50% { transform: translate(-8px, 6px); opacity: 1; }
  100% { transform: translate(5px, -4px); opacity: 0.7; }
}

// ======================== 面板通用样式 ========================
.panel-box {
  background: transparent;
  border: 1px solid rgba(72, 180, 255, 0.12);
  border-radius: 6px;
  padding: 14px 16px;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;

  // 面板内背景遮罩（遮挡旋转锥形渐变）
  &::before {
    content: '';
    position: absolute;
    inset: 2px;
    background: #061638;
    border-radius: 4px;
    z-index: 1;
  }

  // 旋转边框流光
  &::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200%;
    aspect-ratio: 1;
    background: conic-gradient(
      from 0deg at 50% 50%,
      #3BAFD6 0%,
      transparent 8%,
      transparent 92%,
      #3BAFD6 100%
    );
    transform: translate(-50%, -50%);
    animation: borderGlowRotate 4s linear infinite;
    z-index: 0;
    pointer-events: none;
    will-change: transform;
  }

  &:hover {
    box-shadow: 0 0 24px rgba(59, 175, 214, 0.2) !important;
  }

  .panel-title {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 2px;
    color: #fff;
    margin-bottom: 12px;
    padding-left: 12px;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    flex-shrink: 0;

    &::before {
      content: '';
      position: absolute;
      left: 0;
      top: 2px;
      width: 3px;
      height: 14px;
      background: $accent;
      border-radius: 2px;
      box-shadow: 0 0 8px $accent;
      animation: titleBarGlow 2.5s ease-in-out infinite;
    }
  }

  .panel-content {
    padding: 0;
    position: relative;
    z-index: 2;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
  }
}

// 面板四角装饰
.corner-deco {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: $accent;
  border-style: solid;
  opacity: 0.7;
  z-index: 4;
  animation: cornerBreathe 3s ease-in-out infinite;

  &.tl { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
  &.tr { top: -1px; right: -1px; border-width: 2px 2px 0 0; animation-delay: 0.5s; }
  &.bl { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; animation-delay: 1s; }
  &.br { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; animation-delay: 1.5s; }
}

@keyframes cornerBreathe {
  0%, 100% { opacity: 0.4; box-shadow: 0 0 4px rgba(72,215,255,0.2); }
  50% { opacity: 1; box-shadow: 0 0 12px rgba(72,215,255,0.6), 0 0 24px rgba(72,215,255,0.2); }
}

@keyframes borderGlowRotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes titleBarGlow {
  0%, 100% { box-shadow: 0 0 6px $accent; opacity: 0.7; }
  50% { box-shadow: 0 0 14px $accent, 0 0 24px rgba(72,215,255,0.3); opacity: 1; }
}