/* Lesson 页面专用：在 oiwiki-style.css 基础上补充 */

/* 导航头部（在 oiwiki-style.css 基础上补充） */
.oi-nav-header svg { width: 22px; height: 22px; }

/* LYM 块 */
.lym-block {
  margin: 16px 0;
  border: 1px solid var(--oi-text-lightest);
  border-radius: 8px;
  overflow: hidden;
}
.lym-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--oi-nav-bg);
  font-size: 12px;
  color: var(--oi-text-light);
  border-bottom: 1px solid var(--oi-text-lightest);
}
.lym-run-btn {
  padding: 4px 14px;
  border: none;
  border-radius: 4px;
  background: var(--oi-primary);
  color: #fff;
  font-size: 12px;
  cursor: pointer;
}
.lym-run-btn:hover { background: var(--oi-primary-dark); }
.lym-canvas-wrap {
  position: relative;
  text-align: center;
  background: var(--oi-code-bg);
}
.lym-canvas-wrap canvas {
  display: block;
  margin: 0 auto;
  max-width: 100%;
}
.lym-toolbar {
  display: flex;
  gap: 8px;
  padding: 6px 12px;
  background: var(--oi-nav-bg);
  border-top: 1px solid var(--oi-text-lightest);
  justify-content: center;
}
.lym-toolbar button {
  padding: 3px 12px;
  border: 1px solid var(--oi-text-lightest);
  border-radius: 4px;
  background: var(--oi-bg);
  font-size: 12px;
  cursor: pointer;
  color: var(--oi-text-light);
}
.lym-toolbar button:hover { background: var(--oi-nav-bg); color: var(--oi-text); }

/* 移动端顶栏 */
.oi-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--oi-text-lightest);
  background: var(--oi-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.oi-mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 2px 6px;
  color: var(--oi-text);
  line-height: 1;
}
.oi-mobile-title {
  display: none;
  font-weight: 600;
  font-size: 15px;
  color: var(--oi-primary);
}

/* 移动端菜单按钮由 oiwiki-style.css 的 76.25em 断点统一控制 */
.oi-topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.oi-theme-btn {
  background: transparent;
  border: none;
  color: var(--oi-text-lighter);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.2s;
}
.oi-theme-btn:hover { background: var(--oi-code-bg); color: var(--oi-text); }

.oi-mobile-user {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--oi-text-lighter);
}
.oi-mobile-user .avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--oi-primary, #3b82f6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}
.oi-mobile-user .admin-link {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--oi-primary, #3b82f6);
  color: #fff;
  text-decoration: none;
}



/* 管理通栏按钮 */
.oi-admin-bar {
  display: block;
  text-align: center;
  padding: 10px 0;
  margin: 0 0 16px;
  border-radius: 6px;
  background: var(--oi-primary, #3b82f6);
  color: #fff;
  text-decoration: none;
  font-size: 18px;
  font-weight: 500;
  transition: background .15s;
}
.oi-admin-bar:hover {
  background: var(--oi-primary-hover, #2563eb);
}

.oi-admin-edit-btn {
  display: inline-block;
  margin: 8px 0;
  padding: 6px 16px;
  border-radius: 4px;
  background: var(--oi-primary, #3b82f6);
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.oi-admin-edit-btn:hover {
  background: var(--oi-primary-hover, #2563eb);
}

/* 空状态 */
.oi-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--oi-text-lighter);
}
.oi-empty h2 { font-weight: 400; }

/* ========== Lesson 首页 ========== */
.oi-lesson-home {
  max-width: 100%;
}
.oi-home-title {
  font-size: 28px;
  font-weight: 500;
  margin: 0 0 4px 0;
  color: var(--oi-text);
}
.oi-home-subtitle {
  font-size: 13px;
  color: var(--oi-text-light);
  margin: 0 0 28px 0;
}
.oi-home-section {
  margin-bottom: 32px;
}
.oi-home-section-title {
  font-size: 16px;
  font-weight: 500;
  margin: 0 0 12px 0;
  color: var(--oi-text);
}

/* 分类卡片网格 */
.oi-home-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.oi-home-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--oi-text-lightest);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.oi-home-card:hover {
  border-color: var(--oi-primary-light);
  box-shadow: 0 1px 4px rgba(64,81,181,0.12);
}
[data-theme="dark"] .oi-home-card:hover {
  box-shadow: 0 1px 4px rgba(138,180,248,0.15);
}
.oi-home-card-icon {
  font-size: 24px;
  flex-shrink: 0;
}
.oi-home-card-body {
  min-width: 0;
}
.oi-home-card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--oi-text);
}
.oi-home-card-sub {
  font-size: 12px;
  color: var(--oi-text-lighter);
  margin-top: 2px;
}

/* 文章卡片列表 */
.oi-home-lesson-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.oi-lesson-card {
  padding: 14px 16px;
  border: 1px solid var(--oi-text-lightest);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.oi-lesson-card:hover {
  border-color: var(--oi-primary-light);
  background: rgba(64,81,181,0.03);
}
[data-theme="dark"] .oi-lesson-card:hover {
  background: rgba(138,180,248,0.06);
}
.oi-lesson-card h3 {
  font-size: 15px;
  font-weight: 500;
  margin: 0 0 4px 0;
  color: var(--oi-text);
}
.oi-lesson-card p {
  font-size: 13px;
  color: var(--oi-text-light);
  margin: 0 0 6px 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.oi-lesson-card-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--oi-text-lighter);
}
.oi-lesson-subject {
  color: var(--oi-primary);
}