/* Essential Component Styles */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-contrast);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--primary-contrast);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--bg-elevated);
  color: var(--text);
  transform: translateY(-1px);
}

/* Page actions */
.page-actions {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  margin-top: var(--space-2xl);
}

/* Container */
.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

/* Hero section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  position: relative;
}

/* About page hero profile image */
.hero .profile-image {
  margin-bottom: calc(var(--space-2xl) * 1);
}

.hero .profile-image img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto;
  display: block;
}

/* About page hero description */
.hero .hero-description {
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: calc(var(--space-2xl) * 1.5);
  font-size: var(--text-base);
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
}

.hero .hero-description p {
  margin-bottom: var(--space-lg);
}

.page-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2xl);
  line-height: var(--leading-tight);
  color: var(--text);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  color: var(--text-muted);
  margin-bottom: calc(var(--space-2xl) * 1.5);
  font-weight: 400;
  line-height: 1.6;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  animation: scroll-pulse 2s ease-in-out infinite;
  cursor: pointer;
  transition: color var(--transition-base);
}

.scroll-arrow:hover {
  color: var(--primary);
}

@keyframes scroll-pulse {

  0%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }

  50% {
    opacity: 1;
    transform: translateY(4px);
  }
}

/* Projects section */
.projects-overview {
  position: relative;
  margin-bottom: calc(var(--space-4xl) * 2);
  padding-top: calc(var(--space-3xl) * 1.5);
}

.section-header {
  text-align: center;
  margin-bottom: calc(var(--space-2xl) * 2);
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: var(--font-semibold);
  color: var(--text);
  line-height: var(--leading-tight);
}

.section-subtitle {
  font-size: var(--text-xs);
  color: var(--text-muted);
  max-width: 300px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* Projects grid */
.projects-grid {
  display: grid;
  gap: calc(var(--space-xl) * 1.5);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--space-2xl) * 1.5);
  }
}

/* Project cards */
.project-card {
  position: relative;
  background: var(--card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-slow);
  cursor: pointer;
  /* Spotlight效果变量 */
  --mouse-x: 50%;
  --mouse-y: 50%;
  --spotlight-color: rgba(255, 255, 255, 0.2);
  --spotlight-secondary: rgba(100, 255, 218, 0.1);
}

/* Spotlight效果伪元素 */
.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at var(--mouse-x) var(--mouse-y),
      var(--spotlight-color) 0%,
      var(--spotlight-secondary) 40%,
      transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 1;
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.02);
  box-shadow: 0 0 30px var(--glow);
}

.project-card:hover::before {
  opacity: 0.8;
}

/* 主题适配的Spotlight颜色 */
[data-theme="dark"] .project-card {
  --spotlight-color: rgba(255, 255, 255, 0.15);
  --spotlight-secondary: rgba(139, 92, 246, 0.08);
}

[data-theme="dark"] .project-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .project-card {
  --spotlight-color: rgba(99, 102, 241, 0.06);
  --spotlight-secondary: rgba(168, 85, 247, 0.03);
}

[data-theme="light"] .project-card:hover {
  border-color: rgba(255, 255, 255, 0.05);
}

.project-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-elevated), var(--border-light));
  position: relative;
  z-index: 2;
}

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

.project-card:hover .project-image img {
  transform: scale(1.02);
}

.project-content {
  padding: calc(var(--space-lg) * 1.25);
  position: relative;
  z-index: 2;
}

.project-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  line-height: var(--leading-tight);
  color: var(--text);
}

.external-icon {
  opacity: 0.6;
  font-size: var(--text-sm);
  margin-left: var(--space-xs);
}

.project-description {
  color: var(--text-muted);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-lg);
}

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

.tag {
  padding: 4px 8px;
  background: var(--bg-elevated);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

.project-link {
  position: absolute;
  inset: 0;
  z-index: 3;
}

/* Skills & Experience Styles */
.skills-grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
  margin-top: calc(var(--space-xl) * 2);
}

.skill-content,
.experience-stat {
  text-align: center;
  padding: var(--space-lg) var(--space-sm);
}

.skill-icon {
  width: 32px;
  height: 32px;
  background-size: contain;
  background-repeat: no-repeat;
  margin: 0 auto var(--space-md) auto;
}

.stat-number {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: var(--font-bold);
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  line-height: var(--leading-normal);
}

.skill-name {
  font-size: var(--text-sm);
  color: var(--text);
  font-weight: var(--font-medium);
  line-height: var(--leading-namal);
}

.capabilities-section .section-header {
  margin-bottom: calc(var(--space-xl) * 1.5);
}

.capabilities-section .projects-grid {
  gap: calc(var(--space-lg) * 1.5);
}

/* About page section spacing */
section:not(:last-of-type) .scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

section+section {
  position: relative;
  min-height: 100vh;
  margin-bottom: calc(var(--space-4xl) * 2);
  padding-top: calc(var(--space-4xl) * 2);
  padding-bottom: calc(var(--space-4xl) * 2);
}

/* Last section adjustments */
section:last-of-type {
  min-height: auto;
  margin-bottom: calc(var(--space-2xl) * 1.5);
}

section:last-of-type .section-header {
  margin-bottom: var(--space-3xl);
}

.skills-grid {
  display: grid;
  gap: calc(var(--space-xl) * 1.5);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.skill-category {
  padding: calc(var(--space-lg) * 1.25);
  background: var(--card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  transition: all var(--transition-slow);
}

.skill-category:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--card-hover);
}

.skill-category-title {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-lg);
  color: var(--text);
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.experience-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-md) * 1.5);
}

.experience-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: calc(var(--space-lg) * 1.5);
  padding: calc(var(--space-lg) * 1.25);
  background: var(--card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  transition: all var(--transition-slow);
}

.experience-item:hover {
  box-shadow: 0 16px 32px var(--shadow-lg);
  border-color: transparent;
  background: var(--bg) !important;
  transform: scale(1.02);
}

.experience-period {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  white-space: nowrap;
}

.experience-title {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-xs);
  color: var(--text);
}

.experience-company {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.experience-description {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: calc(var(--leading-relaxed) * 1.2)
}


/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: calc(var(--space-2xl) * 1.5) 0 120px;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-link {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer-copyright-line {
  margin: 0;
  white-space: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
}

.footer-beian-link {
  color: inherit;
  font-size: inherit;
}

.footer-beian-link:hover {
  color: var(--text);
}

.footer-sep {
  opacity: 0.7;
}

@media (max-width: 480px) {
  .footer-copyright {
    font-size: 11px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 var(--space-md);
  }

  .projects-overview {
    margin-top: calc(var(--space-4xl) * 2);
    margin-bottom: calc(var(--space-4xl) * 1.5);
  }

  .projects-grid {
    gap: var(--space-2xl);
  }

  /* 为包含统计数据的网格添加特定类名的样式 */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  /* 技能网格在移动端显示为2列，最后一个居中 */
  .projects-grid.skills-grid-5 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
  }

  .projects-grid.skills-grid-5 .project-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }

  .hero .profile-image img {
    width: 80px;
    height: 80px;
  }

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

  .experience-item {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .experience-description {
    font-size: var(--text-sm);
  }

  .float-menu {
    display: none;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}