/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-blue: #2563eb;
  --primary-dark: #1e293b;
  --primary-light: #f8fafc;
  --text-dark: #334155;
  --text-light: #64748b;
  --bg-light: #ffffff;
  --bg-card: #f1f5f9;
  --accent: #3b82f6;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-light);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-light);
  color: var(--text-dark);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-blue);
}

.nav-toggle {
  display: block;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-light);
  list-style: none;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.nav-menu.active {
  display: block;
}

.nav-menu li {
  margin: 0.5rem 0;
}

.nav-menu a {
  color: var(--text-dark);
  text-decoration: none;
  padding: 0.5rem 1rem;
  display: block;
  border-radius: 4px;
  transition: background 0.3s;
}

.nav-menu a:hover {
  background: var(--primary-blue);
  color: var(--bg-light);
}

/* 首页横幅 */
.hero {
  margin-top: 70px;
  background: linear-gradient(
    135deg,
    var(--primary-blue) 0%,
    var(--accent) 100%
  );
  color: var(--bg-light);
  padding: 4rem 1rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.avatar {
  font-size: 6rem;
  margin-bottom: 1rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  opacity: 0.9;
}

.hero-desc {
  opacity: 0.8;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 25px;
  text-decoration: none;
  font-weight: bold;
  transition:
    transform 0.3s,
    box-shadow 0.3s;
}

.btn-primary {
  background: var(--bg-light);
  color: var(--primary-blue);
}

.btn-secondary {
  background: transparent;
  color: var(--bg-light);
  border: 2px solid var(--bg-light);
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 通用章节样式 */
.section-title {
  text-align: center;
  font-size: 2rem;
  color: var(--primary-dark);
  margin-bottom: 2rem;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: var(--primary-blue);
  margin: 0.5rem auto 0;
  border-radius: 2px;
}

/* 关于我 */
.about {
  padding: 4rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.about-card {
  text-align: center;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: 12px;
  transition: transform 0.3s;
}

.about-card:hover {
  transform: translateY(-5px);
}

.about-card .icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
}

.about-card h3 {
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.about-card p {
  color: var(--text-light);
}

.about-text {
  max-width: 800px;
  margin: 0 auto;
  line-height: 2;
  color: var(--text-light);
}

.about-text p {
  margin-bottom: 1rem;
}

/* 项目展示 */
.projects {
  padding: 4rem 1rem;
  background: var(--bg-card);
}

.project-list {
  max-width: 800px;
  margin: 0 auto;
}

.project-list-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.project-list-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-light);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition:
    transform 0.3s,
    box-shadow 0.3s;
}

.project-list-item:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.project-emoji {
  font-size: 2rem;
  line-height: 1;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
}

.project-name {
  flex: 1;
  font-size: 1.1rem;
  color: var(--primary-dark);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
}

.project-link:hover {
  text-decoration: underline;
}

/* 联系方式 */
.contact {
  padding: 4rem 1rem;
  background: var(--bg-card);
}

.contact-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.contact-item .icon {
  font-size: 2rem;
}

.contact-item h4 {
  color: var(--primary-dark);
  margin-bottom: 0.25rem;
}

.contact-item p {
  color: var(--text-light);
}

.contact-item img {
  width: 150px;
  height: 150px;
  border-radius: 8px;
  margin-top: 0.5rem;
}

/* 页脚 */
.footer {
  background: var(--primary-dark);
  color: var(--bg-light);
  text-align: center;
  padding: 2rem 1rem;
}

.footer p {
  margin-bottom: 0.5rem;
  opacity: 0.9;
}

/* 响应式设计 */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    display: flex;
    position: static;
    background: none;
    padding: 0;
    box-shadow: none;
  }

  .nav-menu li {
    margin: 0 0.5rem;
  }

  .hero {
    padding: 6rem 2rem;
  }

  .hero h1 {
    font-size: 3.5rem;
  }

  .about,
  .projects,
  .blog,
  .contact {
    padding: 5rem 2rem;
  }
}