:root {
  --bg: #06060d;
  --text: #e8e8f0;
  --muted: #9aa0b5;
  --accent1: #22d3ee; /* cyan */
  --accent2: #a855f7; /* purple */
  --accent3: #ec4899; /* pink */
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.10);
  --nav-bg: rgba(6, 6, 13, 0.5);
  --nav-border: rgba(255, 255, 255, 0.10);
  --particle: rgba(120, 180, 255, 0.7);
  --blob-opacity: 0.5;
}

/* 亮色主题：覆盖核心变量，保持暗色科技风为默认 */
[data-theme="light"] {
  --bg: #f4f6fb;
  --text: #15171f;
  --muted: #5b6172;
  --accent1: #0e7490; /* 深青，亮底上保证对比度 */
  --accent2: #7c3aed;
  --accent3: #db2777;
  --glass: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(0, 0, 0, 0.10);
  --nav-bg: rgba(244, 246, 251, 0.72);
  --nav-border: rgba(0, 0, 0, 0.08);
  --particle: rgba(20, 60, 120, 0.45);
  --blob-opacity: 0.26;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.7;
}

/* 顶部进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent1), var(--accent2), var(--accent3));
  z-index: 1000;
  transition: width 0.1s linear;
}

/* 极光背景 */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--blob-opacity);
  animation: float 18s ease-in-out infinite;
}
.blob-1 {
  width: 420px;
  height: 420px;
  background: var(--accent2);
  top: -100px;
  left: -80px;
}
.blob-2 {
  width: 380px;
  height: 380px;
  background: var(--accent1);
  bottom: -120px;
  right: -60px;
  animation-delay: -6s;
}
.blob-3 {
  width: 320px;
  height: 320px;
  background: var(--accent3);
  top: 40%;
  left: 55%;
  animation-delay: -12s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.1); }
  66% { transform: translate(-30px, 40px) scale(0.95); }
}
#particles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* 导航 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 6vw;
  backdrop-filter: blur(12px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
}
.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s;
  position: relative;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  transition: width 0.3s;
}
.nav-links a:hover::after {
  width: 100%;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 6vw;
  position: relative;
}
.hero-greeting {
  color: var(--muted);
  font-size: 1.1rem;
  letter-spacing: 2px;
}
.hero-name {
  font-size: clamp(2.4rem, 10vw, 7.5rem);
  font-weight: 800;
  line-height: 1.05;
  margin: 10px 0;
  background: linear-gradient(120deg, var(--accent1), var(--accent2) 45%, var(--accent3));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 6s linear infinite;
}
@keyframes shine {
  to { background-position: 200% center; }
}
.hero-typed {
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  color: var(--text);
  min-height: 2em;
}
.cursor {
  color: var(--accent1);
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}
.hero-actions {
  display: flex;
  gap: 18px;
  margin-top: 34px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  padding: 13px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.3s, box-shadow 0.3s;
  display: inline-block;
}
.btn-primary {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: #06060d;
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(168, 85, 247, 0.45);
}
.btn-ghost {
  border: 1px solid var(--glass-border);
  color: var(--text);
}
.btn-ghost:hover {
  transform: translateY(-3px);
  border-color: var(--accent1);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.2);
}
.scroll-hint {
  position: absolute;
  bottom: 30px;
  color: var(--muted);
  font-size: 0.85rem;
  animation: bob 2s ease-in-out infinite;
}
@keyframes bob {
  50% { transform: translateY(8px); }
}

/* 通用 section */
.section {
  max-width: 980px;
  margin: 0 auto;
  padding: 90px 6vw;
}
.section-title {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 36px;
  text-align: center;
  position: relative;
}
.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  margin: 14px auto 0;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  border-radius: 2px;
}
.glass {
  background: var(--glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 30px;
}

/* 关于 */
.about-card p {
  color: var(--muted);
  font-size: 1.05rem;
}

/* 技能 */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.skill {
  padding: 12px 22px;
  border-radius: 50px;
  font-size: 0.95rem;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s, color 0.3s;
}
.skill:hover {
  transform: translateY(-4px);
  border-color: var(--accent1);
  box-shadow: 0 0 22px rgba(34, 211, 238, 0.25);
  color: var(--text);
}

/* 作品 */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.project {
  padding: 0;
  overflow: hidden;
  transition: transform 0.4s, box-shadow 0.4s;
}
.project:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(168, 85, 247, 0.25);
}
.project-thumb {
  height: 150px;
  background: linear-gradient(135deg, var(--accent2), var(--accent1));
  position: relative;
  overflow: hidden;
}
.project-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.25), transparent 60%);
}
/* 游戏项目缩略图：水果链配色(西瓜绿 → 菠萝黄 → 樱桃红) */
.project-thumb--game {
  background: linear-gradient(135deg, #3eb864 0%, #f2c241 50%, #ff5a5a 100%);
}
.project--featured {
  border-color: rgba(62, 184, 100, 0.35);
}
/* AI 工具链项目缩略图：靛蓝 → 品红 → 青色,呼应 AI / 科技感 */
.project-thumb--aitools {
  background: linear-gradient(135deg, #4f46e5 0%, #d946ef 50%, #06b6d4 100%);
}
/* 文档项目缩略图：青 → 天蓝 → 靛，知识 / 文档感 */
.project-thumb--docs {
  background: linear-gradient(135deg, #14b8a6 0%, #0ea5e9 50%, #6366f1 100%);
}
/* 推荐卡缩略图：品红 → 橙 → 青，呼应 AI 资讯热度 */
.project-thumb--aihot {
  background: linear-gradient(135deg, #ec4899 0%, #f59e0b 50%, #06b6d4 100%);
}
.project h3 {
  margin: 18px 22px 8px;
  font-size: 1.2rem;
}
.project p {
  margin: 0 22px 18px;
  color: var(--muted);
  font-size: 0.92rem;
}
.project-links {
  display: flex;
  gap: 14px;
  margin: 0 22px 22px;
}
.project-links a {
  color: var(--accent1);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}
.project-links a:hover {
  text-decoration: underline;
}

/* 联系 */
.contact {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}
.social {
  padding: 12px 26px;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  color: var(--text);
  text-decoration: none;
  background: var(--glass);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.social:hover {
  transform: translateY(-4px);
  border-color: var(--accent3);
  box-shadow: 0 0 24px rgba(236, 72, 153, 0.3);
}
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 50px;
}
/* 访问量统计(不蒜子) */
.visit-stats {
  margin-top: 8px;
  font-size: 0.78rem;
  opacity: 0.85;
}

/* 滚动揭示动画 */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* 自定义光标光晕 */
.cursor-glow {
  position: fixed;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.5), transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 999;
  transition: width 0.2s, height 0.2s;
  mix-blend-mode: screen;
}

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  color: var(--text);
  cursor: pointer;
  padding: 0;
  margin-left: 6px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--accent1);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
}
.icon-moon { display: none; }
.icon-sun { display: block; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* 博客标签（gh-label 被博客复用，保留） */
.gh-label {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

/* 工具严选 */
.tools-cat {
  margin: 38px 0 18px;
  font-size: 1.35rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.tools-cat:first-of-type { margin-top: 8px; }
.tools-cat::before {
  content: "";
  width: 6px;
  height: 22px;
  border-radius: 4px;
  background: linear-gradient(120deg, var(--accent1), var(--accent2));
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.tool {
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.tool:hover {
  transform: translateY(-6px);
  border-color: var(--accent1);
  box-shadow: 0 16px 40px rgba(34, 211, 238, 0.18);
}
.tool-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.tool-emoji {
  font-size: 1.9rem;
  line-height: 1;
}
.tool-head h3 {
  font-size: 1.12rem;
  margin: 0;
}
.tool-cat {
  display: inline-block;
  margin-top: 3px;
  font-size: 0.72rem;
  color: var(--accent2);
  letter-spacing: 0.04em;
}
.tool p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 14px 0 18px;
  flex: 1;
}
.tool-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.tool-link {
  color: var(--accent1);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}
.tool-link:hover { text-decoration: underline; }

/* 点赞按钮 */
.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--muted);
  border-radius: 50px;
  padding: 6px 13px;
  cursor: pointer;
  font-size: 0.82rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.1s;
  user-select: none;
}
.like-btn:hover {
  border-color: var(--accent3);
  color: var(--accent3);
}
.like-btn:active { transform: scale(0.94); }
.like-btn.liked {
  color: var(--accent3);
  border-color: var(--accent3);
  background: rgba(236, 72, 153, 0.10);
}
.like-icon { font-size: 0.95rem; line-height: 1; }
.like-count { font-variant-numeric: tabular-nums; min-width: 1ch; }
.like-note {
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 34px;
}

@media (max-width: 640px) {
  .nav-links {
    gap: 12px 16px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .nav-links a {
    font-size: 0.8rem;
  }
  .section {
    padding: 60px 6vw;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}