/* ================================================
 * 个人主页样式 — 完全作用域隔离
 * 所有规则仅作用于 .page 容器内，不泄漏到外部
 * ================================================ */

/* ----- 设计令牌 (Scope: .page) ----- */
.page {
  --color-white:              #ffffff;
  --color-bg:                 #ffffff;
  --color-bg-secondary:       #f6f8fa;
  --color-bg-tertiary:        #f0f2f5;
  --color-card-bg:            color-mix(in srgb, var(--md-default-bg-color, #f6f8fa) 60%, #fff 40%);
  --color-text-primary:       #1f2328;
  --color-text-secondary:     #656d76;
  --color-text-tertiary:      #8b949e;
  --color-border:             #d0d7de;
  --color-border-light:       #e8ecef;
  --color-border-warm:        #e6e2dc;
  --color-accent:             #0969da;
  --color-accent-hover:       #0550ae;
  --color-accent-light:       #ddf4ff;
  --color-success:            #1a7f37;
  --color-success-light:      #dafbe1;
  --color-orange:             #bd561d;
  --color-purple:             #8250df;
  --color-purple-light:       #fbefff;

  /* 字体系统 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont,
               'HarmonyOS Sans', 'Microsoft YaHei', 'PingFang SC',
               'Noto Sans SC', sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* 间距系统 (基于 8px 网格) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* 圆角 */
  --radius-sm:   6px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 999px;

  /* 阴影 */
  --shadow-sm:   0 1px 2px rgba(31, 35, 40, 0.06);
  --shadow-md:   0 2px 8px rgba(31, 35, 40, 0.08);
  --shadow-lg:   0 4px 16px rgba(31, 35, 40, 0.10);
  --shadow-card: 0 1px 3px rgba(31, 35, 40, 0.08);

  /* 过渡 */
  --transition-fast:   0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-normal: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* 页面基础 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);

  /* 布局 */
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-10) var(--space-8);
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-8);
  min-height: 100vh;
}

/* 页面入场淡入（可选，不影响外部） */
.page.bp-fade-in {
  animation: bp-fadeIn 0.4s ease 0.1s forwards;
}

@keyframes bp-fadeIn {
  to { opacity: 1; }
}

/* ================================================
 * 布局
 * ================================================ */

/* 左侧主内容 */
.page .main {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

/* 右侧栏 */
.page .sidebar {
  position: sticky;
  top: var(--space-10);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ================================================
 * 通用组件
 * ================================================ */

/* 区块标题 */
.page .section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border: none;
  padding: 0;
  background: none;
}

.page .section-title::before {
  content: '';
  display: block;
  width: 3px;
  height: 22px;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* 卡片基类 */
.page .card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-warm);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              border-color var(--transition-fast);
}

.page .card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-warm);
}

/* 侧栏卡片禁用上浮效果 */
.page .sidebar .card:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-border-warm);
}

/* 人物介绍卡片去外框 + 背景透明 */
.page .sidebar .profile-card {
  border: none;
  background: transparent;
  padding-top: 0;
}

/* 标签 */
.page .tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-radius: var(--radius-full);
  line-height: 1.6;
  letter-spacing: 0.01em;
  transition: transform var(--transition-fast);
  cursor: default;
  border: none;
  margin: 0;
}

.page .tag:hover {
  transform: scale(1.06);
}

/* 按钮 */
.page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-sans);
  line-height: 1.4;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  background: none;
  margin: 0;
  text-decoration: none;
}

.page .btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.page .btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

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

.page .btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-text-tertiary);
  color: var(--color-text-primary);
}

/* ================================================
 * Hero 区域
 * ================================================ */

.page .hero {
  position: relative;
  padding: var(--space-12) 0;
  overflow: hidden;
}

/* 背景：极淡的网格点阵 */
.page .hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle, var(--color-border) 0.8px, transparent 0.8px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
}

/* 背景装饰：极简科技线条 */
.page .hero-bg-line {
  position: absolute;
  pointer-events: none;
  opacity: 0.08;
}

.page .hero-bg-line--1 {
  top: -20px;
  right: 60px;
  width: 180px;
  height: 180px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  border-radius: 0 0 24px 0;
}

.page .hero-bg-line--2 {
  bottom: 40px;
  right: 140px;
  width: 80px;
  height: 80px;
  border-left: 2px solid var(--color-accent);
  border-top: 2px solid var(--color-accent);
  border-radius: 24px 0 0 0;
}

.page .hero-bg-line--3 {
  top: 60px;
  right: 30px;
  width: 60px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

.page .hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page .hero-title {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  border: none;
  padding: 0;
  background: none;
}

.page .hero-title .highlight {
  color: var(--color-accent);
}

.page .hero-subtitle {
  font-size: 20px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  line-height: 1.5;
}

.page .hero-description {
  font-size: 16px;
  color: var(--color-text-tertiary);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: var(--space-8);
}

.page .hero-actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

/* ================================================
 * 置顶文章
 * ================================================ */

.page .pinned-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

/* 文章卡片 */
.page .article-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
}

/* 左侧彩色指示条 */
.page .article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  border-radius: 0 2px 2px 0;
}

.page .article-card[data-category="freeRTOS"]::before { background: var(--color-accent); }
.page .article-card[data-category="esp32"]::before     { background: var(--color-orange); }
.page .article-card[data-category="linux"]::before      { background: var(--color-success); }
.page .article-card[data-category="qt"]::before         { background: var(--color-purple); }
.page .article-card[data-category="stm32"]::before      { background: var(--color-accent); }
.page .article-card[data-category="cpp"]::before        { background: var(--color-text-tertiary); }

.page .article-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.page .article-card-category {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  line-height: 1.6;
  border: none;
}

.page .article-card[data-category="freeRTOS"] .article-card-category {
  color: var(--color-accent);
  background: var(--color-accent-light);
}
.page .article-card[data-category="esp32"] .article-card-category {
  color: var(--color-orange);
  background: #fff1e5;
}
.page .article-card[data-category="linux"] .article-card-category {
  color: var(--color-success);
  background: var(--color-success-light);
}
.page .article-card[data-category="qt"] .article-card-category {
  color: var(--color-purple);
  background: var(--color-purple-light);
}
.page .article-card[data-category="stm32"] .article-card-category {
  color: var(--color-accent);
  background: var(--color-accent-light);
}
.page .article-card[data-category="cpp"] .article-card-category {
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
}

.page .article-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.4;
  flex: 1;
  border: none;
  padding: 0;
  margin: 0;
  background: none;
}

.page .article-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

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

.page .article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-2);
}

/* 阅读链接 */
.page .read-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
  text-decoration: none;
}

.page .read-link:hover {
  gap: var(--space-2);
  color: var(--color-accent-hover);
}

.page .read-link .arrow {
  transition: transform var(--transition-fast);
}

.page .read-link:hover .arrow {
  transform: translateX(3px);
}

/* ================================================
 * 精选专栏
 * ================================================ */

.page .columns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.page .column-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-6);
  gap: var(--space-4);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.page .column-card:hover {
  color: inherit;
}

.page .column-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.page .column-icon svg {
  width: 28px;
  height: 28px;
  display: block;
}

.page .column-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  border: none;
  padding: 0;
  margin: 0;
  background: none;
}

.page .column-card .column-desc {
  font-size: 14px;
  color: var(--color-text-tertiary);
  line-height: 1.5;
  margin: 0;
}

.page .column-count {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: 2px 12px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-full);
}

/* 各专栏主题色 */
.page .column-card[data-column="stm32"] .column-icon {
  background: var(--color-accent-light);
  color: var(--color-accent);
}
.page .column-card[data-column="esp32"] .column-icon {
  background: #fff1e5;
  color: var(--color-orange);
}
.page .column-card[data-column="linux"] .column-icon {
  background: var(--color-success-light);
  color: var(--color-success);
}
.page .column-card[data-column="qt"] .column-icon {
  background: var(--color-purple-light);
  color: var(--color-purple);
}

/* ================================================
 * 开源项目推荐
 * ================================================ */

.page .projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.page .project-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
}

.page .project-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-1);
}

.page .project-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.page .project-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

.page .project-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  border: none;
  padding: 0;
  margin: 0;
  background: none;
}

.page .project-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}

.page .project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-warm);
}

.page .project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page .project-stars {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
  color: var(--color-text-tertiary);
  font-weight: 500;
  white-space: nowrap;
}

.page .project-stars svg {
  width: 14px;
  height: 14px;
  display: block;
}

/* 各项目图标主题色 */
.page .project-card[data-project="mcuboot"] .project-icon {
  background: var(--color-accent-light);
  color: var(--color-accent);
}
.page .project-card[data-project="embedcli"] .project-icon {
  background: var(--color-success-light);
  color: var(--color-success);
}
.page .project-card[data-project="iothub"] .project-icon {
  background: #fff1e5;
  color: var(--color-orange);
}
.page .project-card[data-project="qthmi"] .project-icon {
  background: var(--color-purple-light);
  color: var(--color-purple);
}
.page .project-card[data-project="rtoskit"] .project-icon {
  background: #dff6f0;
  color: #0d7a6e;
}
.page .project-card[data-project="linuxdrv"] .project-icon {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

/* ================================================
 * 右侧栏
 * ================================================ */

/* 个人资料卡片 */
.page .profile-card {
  padding: var(--space-8) var(--space-6);
  text-align: center;
}

.page .avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  margin: 0 auto var(--space-6);
  display: block;
  object-fit: cover;
  box-shadow: 0 4px 20px rgba(9, 105, 218, 0.25);
}

.page .profile-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
  border: none;
  padding: 0;
  background: none;
}

.page .profile-bio {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

/* 社交链接 */
.page .social-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-5);
  padding-top: var(--space-3);
}

.page .social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast),
              opacity var(--transition-fast);
  width: auto;
  height: auto;
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin: 0;
  text-decoration: none;
}

.page .social-link:hover {
  background: none;
  border: none;
  transform: scale(1.2);
  opacity: 0.75;
  color: inherit;
}

/* 各平台品牌色 */
.page .social-link[title="GitHub"] { color: #24292e; }
.page .social-link[title="CSDN"]    { color: #c8202e; }
.page .social-link[title="知乎"]    { color: #0066ff; }
.page .social-link[title="邮箱"]    { color: #656d76; }

/* 技能标签卡片 */
.page .skills-card {
  padding: var(--space-6);
}

.page .skills-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: none;
  padding: 0;
  background: none;
}

.page .skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page .skill-tag {
  display: inline-block;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-warm);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: default;
  line-height: 1.4;
  margin: 0;
}

.page .skill-tag:hover {
  transform: scale(1.06);
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-light);
}

/* ================================================
 * 公众号卡片
 * ================================================ */

.page .wechat-card {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.page .wechat-qr {
  width: 180px;
  height: 180px;
  display: block;
  border-radius: var(--radius-md);
}

.page .wechat-text {
  font-size: 13px;
  color: var(--color-text-tertiary);
  text-align: center;
  line-height: 1.5;
  margin: 0;
}

/* ================================================
 * 滚动加载动画
 * ================================================ */

.page .animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease,
              transform 0.5s ease;
}

.page .animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================
 * 响应式设计
 * ================================================ */

@media (max-width: 1200px) {
  .page {
    grid-template-columns: 1fr 320px;
    padding: var(--space-8) var(--space-6);
    gap: var(--space-6);
  }

  .page .hero-title {
    font-size: 38px;
  }

  .page .columns-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .page {
    grid-template-columns: 1fr 280px;
    gap: var(--space-6);
  }

  .page .hero {
    padding: var(--space-10) 0;
  }

  .page .hero-title {
    font-size: 32px;
  }

  .page .hero-subtitle {
    font-size: 18px;
  }

  .page .pinned-grid {
    grid-template-columns: 1fr;
  }

  .page .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .page {
    grid-template-columns: 1fr;
    padding: var(--space-6) var(--space-5);
    gap: var(--space-10);
  }

  .page .sidebar {
    position: static;
    order: -1;
  }

  .page .hero {
    padding: var(--space-8) 0;
  }

  .page .hero-title {
    font-size: 28px;
  }

  .page .hero-subtitle {
    font-size: 16px;
  }

  .page .hero-description {
    font-size: 15px;
  }

  .page .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page .hero-actions .btn {
    justify-content: center;
  }

  .page .pinned-grid {
    grid-template-columns: 1fr;
  }

  .page .columns-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page .section-title {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .page {
    padding: var(--space-4) var(--space-4);
  }

  .page .hero-title {
    font-size: 24px;
  }

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

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

  .page .article-card {
    padding: var(--space-4);
  }
}