/* ============================================
   成云杉YSC - 页面专属样式
   博客 / 联系 / 简历
   ============================================ */

/* --- Shared: .card base --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  border-color: var(--border-color-hover);
}

/* --- Shared: .tag base --- */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-light);
}

.tag.tag-purple {
  background: rgba(139, 92, 246, 0.12);
  color: var(--accent-purple);
}

.tag.tag-pink {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-pink);
}

/* --- Shared: standalone .gradient-text --- */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Nav hamburger (alias for nav-toggle used in Route B pages) --- */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 6px;
  cursor: pointer;
  border: none;
  background: none;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.nav-hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-hamburger {
    display: flex;
  }
}

/* --- Route B simple footer --- */
.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

/* =============================================
   BLOG - 博客列表 & 文章详情
   ============================================= */

/* --- Filter & Search Bar --- */
.blog-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.blog-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

.blog-search {
  position: relative;
  min-width: 240px;
}

.blog-search input {
  width: 100%;
  padding: 10px 16px 10px 42px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  color: var(--text-primary);
  font-size: 0.92rem;
  backdrop-filter: blur(8px);
  transition: border-color var(--transition-normal);
}

.blog-search input::placeholder {
  color: var(--text-secondary);
}

.blog-search input:focus {
  border-color: var(--accent);
}

.blog-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1rem;
  pointer-events: none;
}

/* --- Blog Grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.1));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 2.5rem;
  overflow: hidden;
  position: relative;
}

.blog-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.blog-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--text-primary);
  transition: color var(--transition-normal);
}

.blog-card:hover .blog-card-title {
  color: var(--accent);
}

.blog-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.blog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* --- Blog Post Detail --- */
.post-header {
  padding: calc(var(--nav-height) + 48px) 0 32px;
  max-width: 780px;
  margin: 0 auto;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
  transition: color var(--transition-normal);
}

.post-back:hover {
  color: var(--accent);
}

.post-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.post-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.post-cover {
  width: 100%;
  max-width: 780px;
  margin: 0 auto 40px;
  aspect-ratio: 21 / 9;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(168, 85, 247, 0.08));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

/* Markdown-style article content */
.post-content {
  max-width: 780px;
  margin: 0 auto;
  padding-bottom: 60px;
}

.post-content h2 {
  font-size: 1.65rem;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.post-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 36px 0 12px;
}

.post-content p {
  margin-bottom: 20px;
  line-height: 1.85;
  color: var(--text-primary);
}

.post-content ul,
.post-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.post-content ul {
  list-style: disc;
}

.post-content ol {
  list-style: decimal;
}

.post-content li {
  margin-bottom: 8px;
  line-height: 1.75;
}

.post-content blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  border-left: 4px solid var(--accent);
  background: rgba(99, 102, 241, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;

  color: var(--text-secondary);
  font-style: italic;
}

.post-content blockquote p {
  margin-bottom: 0;
}

.post-content pre {
  margin: 24px 0;
  padding: 20px 24px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.88rem;
  line-height: 1.7;
  color: #c9d1d9;
}

.post-content code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.88em;
  padding: 2px 6px;
  background: rgba(99, 102, 241, 0.12);
  border-radius: 4px;
  color: var(--accent-purple);
}

.post-content pre code {
  padding: 0;
  background: none;
  color: inherit;
  border-radius: 0;
}

.post-content img,
.post-content .img-placeholder {
  width: 100%;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  border: 1px solid var(--border-color);
}

.post-content .img-placeholder {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.post-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Post Navigation */
.post-nav {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
}

.post-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all var(--transition-normal);
  max-width: 48%;
}

.post-nav a:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.post-nav a .label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.post-nav a .title {
  font-weight: 600;
  font-size: 0.95rem;
}

.post-nav .next {
  text-align: right;
  margin-left: auto;
}


/* =============================================
   CONTACT - 联系方式
   ============================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* Form */
.contact-form-wrapper {
  padding: 32px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(156, 163, 175, 0.6);
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
  color: #34d399;
  font-size: 1.05rem;
}

.form-success.show {
  display: block;
}

/* Info Side */
.contact-info-wrapper {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info-card {
  padding: 28px;
}

.contact-info-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-info-card h3 .icon {
  font-size: 1.3rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition);
}

.contact-item:hover {
  color: var(--text-primary);
}

.contact-item .item-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(99, 102, 241, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-card .social-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.contact-info-card .social-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  width: auto;
  height: auto;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.contact-info-card .social-link:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.06);
  transform: translateY(-2px);
}

.contact-info-card .social-link .s-icon {
  font-size: 1.2rem;
}

.location-note {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.map-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(168, 85, 247, 0.05));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}


/* =============================================
   RESUME - 简历/履历
   ============================================= */

/* Profile Header */
.resume-profile {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 40px;
  margin-bottom: 48px;
}

.resume-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.resume-info h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.resume-info .subtitle {
  color: var(--accent-purple);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.resume-info .desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 520px;
}

.resume-info .quick-info {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.resume-info .quick-info span {
  color: var(--text-secondary);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Resume Section */
.resume-section {
  margin-bottom: 48px;
}

.resume-section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.resume-section-title .icon {
  font-size: 1.2rem;
}

/* Timeline (scoped to resume to avoid overriding about page timeline in style.css) */
.resume-section .timeline {
  position: relative;
  padding-left: 32px;
}

.resume-section .timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-pink), transparent);
  border-radius: 1px;
}

.resume-section .timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.resume-section .timeline-item:last-child {
  margin-bottom: 0;
}

.resume-section .timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-item .period {
  font-size: 0.82rem;
  color: var(--accent-purple);
  font-weight: 500;
  margin-bottom: 6px;
}

.timeline-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-item .company {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 10px;
}

.timeline-item .description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.timeline-item .description ul {
  list-style: disc;
  padding-left: 18px;
  margin-top: 8px;
}

.timeline-item .description li {
  margin-bottom: 4px;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.skill-item {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-normal);
}

.skill-item:hover {
  border-color: var(--border-color-hover);
}

.skill-item .skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.skill-item .skill-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.skill-item .skill-level {
  font-size: 0.82rem;
  color: var(--accent-purple);
  font-weight: 500;
}

.skill-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-pink));
  transition: width 1s ease;
}

/* Project Cards */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 28px;
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.project-card .project-period {
  font-size: 0.82rem;
  color: var(--accent-purple);
  margin-bottom: 12px;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.project-card .project-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Download Button Area */
.resume-download {
  text-align: center;
  margin: 48px 0 0;
}

/* Responsive */
@media (max-width: 768px) {
  .resume-profile {
    flex-direction: column;
    text-align: center;
    padding: 28px;
  }

  .resume-info .desc {
    max-width: 100%;
  }

  .resume-info .quick-info {
    justify-content: center;
  }

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

  .blog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .blog-search {
    min-width: 100%;
  }

  .post-header h1 {
    font-size: 1.7rem;
  }

  .post-nav {
    flex-direction: column;
  }

  .post-nav a {
    max-width: 100%;
  }

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

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

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