/* ========== 基础重置 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #00d4ff;
  --secondary-color: #0088ff;
  --accent-color: #00ffcc;
  --glow-color: rgba(0, 212, 255, 0.5);
  --bg-dark: #000510;
  --card-bg: rgba(0, 20, 40, 0.6);
  --card-border: rgba(0, 212, 255, 0.3);
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family:
    "Segoe UI",
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
}

body {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  cursor: default;
}

/* ========== 星空粒子画布 ========== */
.star-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ========== 鼠标轨迹粒子画布 ========== */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
}

/* ========== 科技感网格背景 ========== */
.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 2;
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
}

/* ========== 扫描线效果 ========== */
/* .scan-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  opacity: 0.5;
  pointer-events: none;
  z-index: 3;
  animation: scanMove 6s linear infinite;
  box-shadow:
    0 0 20px var(--primary-color),
    0 0 40px var(--glow-color);
} */

/* @keyframes scanMove {
  0% {
    top: 0;
  }
  100% {
    top: 100%;
  }
} */

/* ========== 主容器 ========== */
.container {
  position: absolute;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  /*min-height: 100vh;*/
  padding: 2rem;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

/* ========== 头部标题 ========== */
.site-header {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
  opacity: 0;
  transform: translateY(-20px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.visible {
  opacity: 1;
  transform: translateY(0);
}

.title-decoration {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.deco-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color));
}

.deco-line.right {
  background: linear-gradient(90deg, var(--primary-color), transparent);
}

.deco-dot {
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
  box-shadow:
    0 0 10px var(--primary-color),
    0 0 20px var(--glow-color);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.7;
  }
}

.site-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: 0.2em;
  position: relative;
}

.title-glow {
  background: linear-gradient(135deg, #fff 0%, var(--primary-color) 50%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px var(--glow-color));
  animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
  0%,
  100% {
    filter: drop-shadow(0 0 20px var(--glow-color));
  }
  50% {
    filter: drop-shadow(0 0 30px var(--primary-color));
  }
}

.site-subtitle {
  font-size: 0.9rem;
  color: var(--primary-color);
  font-weight: 300;
  letter-spacing: 0.3em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  opacity: 0.8;
}

.typing-text {
  position: relative;
}

.subtitle-cn {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 300;
  letter-spacing: 0.1em;
}

/* ========== 域名卡片 ========== */
.domain-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 420px;

}

.domain-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  text-decoration: none;
  color: #fff;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  --mouse-x: 50%;
  --mouse-y: 50%;
  opacity: 0;
  transform: translateY(30px);
}

.domain-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 卡片悬停光晕跟随 */
.domain-card::before {
  content: "";
  position: absolute;
  top: var(--mouse-y);
  left: var(--mouse-x);
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.domain-card:hover::before {
  opacity: 1;
}

.domain-card:hover,
.domain-card:focus {
  border-color: var(--primary-color);
  transform: translateY(-6px) scale(1.02);
  box-shadow:
    0 10px 40px rgba(0, 212, 255, 0.2),
    0 0 30px rgba(0, 212, 255, 0.1),
    inset 0 0 20px rgba(0, 212, 255, 0.05);
  outline: none;
}

.domain-card:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
}

/* 卡片边框角落装饰 */
.card-border {
  position: absolute;
  top: 1px;
  left: 0;
  width: 100%;
  height: 99%;
  pointer-events: none;
}

.border-corner {
  position: absolute;
  width: 15px;
  height: 15px;
  border-color: var(--primary-color);
  transition: all 0.3s ease;
}

.border-corner.tl {
  top: -1px;
  left: -1px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.border-corner.tr {
  top: -1px;
  right: -1px;
  border-top: 2px solid;
  border-right: 2px solid;
}

.border-corner.bl {
  bottom: -1px;
  left: -1px;
  border-bottom: 2px solid;
  border-left: 2px solid;
}

.border-corner.br {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid;
  border-right: 2px solid;
}

.domain-card:hover .border-corner {
  width: 25px;
  height: 25px;
  box-shadow: 0 0 10px var(--primary-color);
}

/* 卡片内容 */
.card-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.card-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 0.2rem;
  opacity: 0.8;
  transition: all 0.3s ease;
}

.domain-card:hover .card-icon {
  transform: scale(1.2);
  opacity: 1;
  filter: drop-shadow(0 0 10px var(--primary-color));
}

.domain-name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  transition: all 0.3s ease;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.domain-card:hover .domain-name {
  text-shadow: 0 0 20px var(--glow-color);
}

.domain-desc {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

/* 状态指示 */
.card-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

.status-dot {
  width: 6px;
  height: 6px;
  background: #00ff88;
  border-radius: 50%;
  box-shadow: 0 0 8px #00ff88;
  animation: statusBlink 2s ease-in-out infinite;
}

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

/* 卡片扫描线 */
.card-scan {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.1) 50%, transparent 100%);
  transform: translateY(-100%);
  transition: transform 0.6s ease;
  pointer-events: none;
}

.domain-card:hover .card-scan {
  transform: translateY(100%);
}

/* 推荐卡片特殊样式 */
.domain-card.featured {
  background: rgba(0, 40, 60, 0.7);
  border-color: rgba(0, 255, 204, 0.4);
}

.domain-card.featured:hover {
  border-color: var(--accent-color);
  box-shadow:
    0 10px 50px rgba(0, 255, 204, 0.25),
    0 0 40px rgba(0, 255, 204, 0.15),
    inset 0 0 30px rgba(0, 255, 204, 0.05);
}

.featured-icon {
  color: var(--accent-color);
}

.domain-card.featured:hover .featured-icon {
  filter: drop-shadow(0 0 15px var(--accent-color));
}

.domain-card.featured:hover .domain-name {
  text-shadow: 0 0 25px rgba(0, 255, 204, 0.5);
}

.featured-status .status-dot {
  background: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-color);
}

.featured-status .status-text {
  color: var(--accent-color);
  font-weight: 500;
}

/* 推荐脉冲效果 */
.featured-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  transform: translate(-50%, -50%);
  border: 1px solid var(--accent-color);
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
}

.domain-card.featured:hover .featured-pulse {
  animation: pulseRing 1.5s ease-out infinite;
}

@keyframes pulseRing {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.15);
    opacity: 0;
  }
}

/* ========== 底部 ========== */
.site-footer {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 10;
}

.footer-line {
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  margin: 0 auto 1rem;
  opacity: 0.5;
}

.footer-text {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.footer-icon {
  color: var(--primary-color);
  opacity: 0.6;
}

.footer-copyright {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.3);
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .container {
    padding: 1.5rem;
  }

  .site-title {
    font-size: 2.2rem;
  }

  .site-subtitle {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
  }

  .domain-links {
    max-width: 100%;
  }

  .domain-card {
    padding: 0.5rem;
  }

  .domain-name {
    font-size: 1.3rem;
  }

  .deco-line {
    width: 40px;
  }
}

@media (max-width: 480px) {
  .site-header {
    margin-bottom: 2.5rem;
  }

  .site-title {
    font-size: 1.8rem;
    letter-spacing: 0.1em;
  }

  .domain-links {
    gap: 1.25rem;
  }

  .domain-card {
    padding: 0.5rem;
  }

  .domain-name {
    font-size: 1.15rem;
  }

  .domain-desc {
    font-size: 0.75rem;
  }

  .card-icon {
    font-size: 1.25rem;
  }

  .site-footer {
    bottom: 1rem;
  }

  .footer-line {
    width: 150px;
  }

  .footer-text {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
  }

  .deco-line {
    width: 30px;
  }

  .subtitle-cn {
    font-size: 0.85rem;
  }
}

/* ========== 减少动画偏好 ========== */
/* @media (prefers-reduced-motion: reduce) {
    .stars,
    .scan-line,
    .grid-overlay,
    .title-glow,
    .deco-dot,
    .status-dot,
    .featured-pulse {
        animation: none;
    }
    
    .domain-card {
        transition: none;
    }
    
    #particle-canvas {
        display: none;
    }
} */