/* ================================================
   Apple 风格组件
   玻璃态 + 胶囊设计 + 精致动效
   ================================================ */

/* ===== 玻璃导航栏 ===== */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(3, 7, 18, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all var(--duration-base);
}

.glass-nav.scrolled {
  background: rgba(3, 7, 18, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
}

.nav-logo {
  font-size: 1.5rem;
}

.nav-name {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--duration-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--duration-base) var(--ease-out);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  padding: var(--space-4);
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--border);
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--duration-base) var(--ease-out);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu a {
  padding: var(--space-4);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
}

.mobile-menu a:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* ===== 关于区域 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.about-card {
  padding: var(--space-8);
  text-align: center;
}

.about-image-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.avatar-wrapper {
  position: relative;
  width: 180px;
  height: 180px;
  margin-bottom: var(--space-6);
}

.avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--border);
}

.avatar-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: var(--accent-gradient);
  opacity: 0.5;
  z-index: -1;
  animation: rotate 8s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.about-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.about-role {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.about-social {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
}

.social-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--duration-base);
}

.social-btn:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  transform: translateY(-3px);
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.stat-card {
  padding: var(--space-6);
  text-align: center;
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.stat-content {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-1);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--space-2);
}

/* ===== 时间线 ===== */
.timeline {
  padding: var(--space-8);
}

.timeline-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.timeline-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
}

.timeline-items::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  display: flex;
  gap: var(--space-6);
  position: relative;
}

.timeline-dot {
  width: 16px;
  height: 16px;
  background: var(--accent-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-left: -7px;
  margin-top: 4px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-date {
  min-width: 100px;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.timeline-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.timeline-content p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ===== 技能卡片 ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.skill-card {
  padding: var(--space-6);
}

.skill-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.skill-icon {
  font-size: 1.5rem;
}

.skill-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.skill-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.skill-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.skill-bar {
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1s var(--ease-out);
}

/* ===== 项目展示 ===== */
.projects-showcase {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.project-featured {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-8);
  padding: var(--space-8);
  overflow: hidden;
}

.project-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.project-glow {
  position: absolute;
  width: 150px;
  height: 150px;
  background: var(--accent-gradient);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

.project-icon-large {
  font-size: 5rem;
  z-index: 1;
}

.project-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-badge {
  display: inline-block;
  width: fit-content;
  padding: var(--space-1) var(--space-3);
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.project-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.project-info p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.project-tech {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.project-tech span {
  padding: var(--space-1) var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.project-card {
  padding: var(--space-5);
  transition: all var(--duration-base);
}

.project-card:hover {
  transform: translateY(-4px);
}

.project-card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.project-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.project-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.project-tags span {
  padding: var(--space-1) var(--space-2);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.projects-more {
  text-align: center;
}

/* ===== 证书展示 ===== */
.certs-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.cert-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  text-decoration: none;
  color: var(--text-primary);
}

.cert-badge-grade {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #000;
  font-weight: 800;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.cert-content {
  flex: 1;
}

.cert-content h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.cert-content p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.cert-card > svg {
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: transform var(--duration-base);
}

.cert-card:hover > svg {
  transform: translateX(4px);
}

/* ===== 生活相册 ===== */
.life-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 200px);
  gap: var(--space-4);
}

.life-card {
  position: relative;
  overflow: hidden;
  padding: 0;
  text-decoration: none;
}

.life-card-large {
  grid-column: span 2;
}

.life-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow);
}

.life-card:hover img {
  transform: scale(1.05);
}

.life-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--duration-base);
}

.life-card:hover .life-overlay {
  opacity: 1;
}

.life-count {
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.life-overlay h4 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
}

.life-more {
  text-align: center;
  margin-top: var(--space-8);
}

/* ===== 联系区域 ===== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-8);
  padding: var(--space-12);
  overflow: hidden;
  position: relative;
}

.contact-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.contact-content > p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--duration-base);
}

.contact-link:hover {
  background: var(--bg-secondary);
  transform: translateX(8px);
}

.contact-icon {
  font-size: 1.5rem;
}

.contact-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.contact-value {
  font-size: 0.9375rem;
  font-weight: 500;
}

.contact-decoration {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.deco-circle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-gradient);
  opacity: 0.1;
}

.deco-circle:nth-child(1) {
  width: 300px;
  height: 300px;
}

.deco-circle:nth-child(2) {
  width: 200px;
  height: 200px;
  animation-delay: -1s;
}

.deco-circle:nth-child(3) {
  width: 100px;
  height: 100px;
  animation-delay: -2s;
}

@keyframes deco-float {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* ===== 页脚 ===== */
.footer {
  padding: var(--space-12) 0 var(--space-6);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-logo {
  font-size: 1.5rem;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--duration-fast);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--duration-base);
}

.footer-social a:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-base);
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-image-card {
    max-width: 400px;
    margin: 0 auto;
  }

  .project-featured {
    grid-template-columns: 1fr;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .contact-decoration {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .glass-nav {
    height: 64px;
  }

  .nav-container {
    padding: 0 var(--space-4);
  }

  .about-cards {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .life-gallery {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .life-card-large {
    grid-column: span 2;
  }

  /* ===== 联系模块移动端修复 ===== */
  .contact-wrapper {
    padding: var(--space-6);
  }

  .contact-content {
    width: 100%;
  }

  .contact-content h2 {
    font-size: 1.5rem;
    text-align: center;
  }

  .contact-content > p {
    font-size: 0.9375rem;
    text-align: center;
  }

  .contact-links {
    width: 100%;
  }

  .contact-link {
    width: 100%;
    padding: var(--space-3) var(--space-4);
  }

  .contact-link:hover {
    transform: none;
  }

  .contact-content > .pill-btn {
    width: 100%;
    justify-content: center;
    margin-top: var(--space-4);
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .life-gallery {
    grid-template-columns: 1fr;
  }

  .life-card-large {
    grid-column: span 1;
  }
}