/* ============================================
   实验详情页样式
   ============================================ */

/* Lab Header */
.lab-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: white;
  padding: 3rem 0;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.breadcrumbs a {
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumbs a:hover {
  color: white;
}

.breadcrumbs .separator {
  opacity: 0.5;
}

.lab-header-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.75rem;
}

.lab-header-desc {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 700px;
}

/* Lab Main Layout */
.lab-main {
  padding: 2rem 0 4rem;
  background-color: var(--bg-secondary);
  min-height: calc(100vh - 300px);
}

.lab-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
}

/* Sidebar */
.lab-sidebar {
  position: relative;
}

.sidebar-sticky {
  position: sticky;
  top: 80px;
}

.sidebar-section {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.lab-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.lab-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  transition: var(--transition);
}

.lab-nav-item:hover {
  background-color: var(--bg-secondary);
  color: var(--primary);
}

.lab-nav-item.active {
  background-color: var(--primary);
  color: white;
}

.lab-nav-num {
  font-size: 0.75rem;
  font-weight: 600;
  min-width: 36px;
}

.lab-nav-name {
  font-size: 0.875rem;
  line-height: 1.4;
}

.teacher-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.teacher-info p {
  margin-bottom: 0.75rem;
}

.teacher-email {
  color: var(--primary);
  font-weight: 500;
  word-break: break-all;
}

/* Lab Content */
.lab-content {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.lab-detail {
  padding: 2.5rem;
}

.lab-detail-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.lab-detail-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.lab-num {
  display: inline-block;
  background: var(--primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
}

.lab-type {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.lab-detail-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.lab-detail-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Lab Info Grid */
.lab-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.lab-info-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
}

.lab-info-icon {
  width: 44px;
  height: 44px;
  background: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.lab-info-content {
  display: flex;
  flex-direction: column;
}

.lab-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lab-info-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Lab Sections */
.lab-section {
  margin-bottom: 2.5rem;
}

.lab-section:last-child {
  margin-bottom: 0;
}

.lab-section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.section-rect {
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 2px;
}

.lab-section-content {
  padding-left: 1.25rem;
}

.lab-section-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.lab-section-content p:last-child {
  margin-bottom: 0;
}

/* Objective List */
.objective-list {
  list-style: none;
  counter-reset: objective;
}

.objective-list li {
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 1rem;
}

.objective-list li:last-child {
  margin-bottom: 0;
}

.objective-list li::before {
  counter-increment: objective;
  content: counter(objective);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  background: var(--bg-tertiary);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Prep Block */
.prep-block {
  margin-bottom: 1.75rem;
}

.prep-block:last-child {
  margin-bottom: 0;
}

.prep-block h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.875rem;
}

.prep-block p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.prep-block ul,
.prep-block ol {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
}

.prep-block ul li,
.prep-block ol li {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.prep-block ul li:last-child,
.prep-block ol li:last-child {
  margin-bottom: 0;
}

.env-list {
  list-style: none;
  padding-left: 0;
}

.env-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.625rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.env-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
}

/* Task Styles */
.task-intro {
  margin-bottom: 1.25rem;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.task-features {
  list-style: none;
  margin-bottom: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border-left: 3px solid var(--primary);
}

.task-features li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.625rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.task-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
}

.task-features li:last-child {
  margin-bottom: 0;
}

.task-block {
  margin-bottom: 2rem;
  padding: 1.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
}

.task-block:last-child {
  margin-bottom: 0;
}

.task-block h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.task-block > p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.task-block > ul,
.task-block > ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.task-block > ul li,
.task-block > ol li {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.subtask {
  margin-bottom: 1.5rem;
}

.subtask:last-child {
  margin-bottom: 0;
}

.subtask h5 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.subtask p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.9375rem;
  margin-bottom: 0.75rem;
}

.subtask ul,
.subtask ol {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0.75rem;
}

.subtask ul li,
.subtask ol li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.subtask ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 5px;
  height: 5px;
  background: var(--text-muted);
  border-radius: 50%;
}

.subtask ol {
  list-style: decimal;
  padding-left: 1.5rem;
}

.subtask ol li {
  padding-left: 0;
}

.subtask ol li::before {
  display: none;
}

/* Submission List */
.submission-list {
  list-style: none;
}

.submission-list li {
  padding: 1.125rem 1.25rem;
  margin-bottom: 0.875rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.submission-list li:last-child {
  margin-bottom: 0;
}

.submission-list li strong {
  color: var(--primary);
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.875rem;
  font-weight: 600;
}

.submission-list li ul {
  margin-top: 0.625rem;
  padding-left: 1.25rem;
}

.submission-list li ul li {
  padding: 0;
  margin-bottom: 0.375rem;
  background: transparent;
}

/* Grading Block */
.grading-block {
  margin-bottom: 1.75rem;
}

.grading-block:last-child {
  margin-bottom: 0;
}

.grading-block h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.625rem;
}

.grading-block > p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.grading-block > ul {
  list-style: none;
  padding-left: 0;
}

.grading-block > ul li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.grading-block > ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 5px;
  height: 5px;
  background: var(--text-muted);
  border-radius: 50%;
}

/* Resource Download Box */
.resource-download-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.resource-download-box .download-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.resource-download-box .download-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.resource-download-box .download-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Resource Content List */
.resource-content-list {
  margin-top: 1.5rem;
}

.resource-content-list .content-list-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

/* Resource List */
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.resource-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: var(--transition);
}

.resource-item:hover {
  border-color: var(--border);
  background: white;
}

.resource-icon {
  width: 44px;
  height: 44px;
  background: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.resource-icon.icon-sm {
  width: 32px;
  height: 32px;
}

.resource-item:hover .resource-icon {
  background: var(--bg-secondary);
}

.resource-info {
  flex: 1;
}

.resource-info h5 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.resource-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* All Labs Section */
.all-labs {
  padding: 2.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.all-labs-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.all-labs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.all-labs-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.all-labs-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.all-labs-item.active {
  border-color: var(--primary);
  background: var(--primary);
}

.all-labs-item.active .all-labs-num,
.all-labs-item.active .all-labs-name {
  color: white;
}

.all-labs-item.active .all-labs-tag {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.all-labs-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  min-width: 36px;
}

.all-labs-name {
  flex: 1;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.all-labs-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  border-radius: 9999px;
}

/* Table Styles */
.cmd-table,
.feature-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.875rem;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.cmd-table th,
.cmd-table td,
.feature-table th,
.feature-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.cmd-table th,
.feature-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.cmd-table tr:hover,
.feature-table tr:hover {
  background: var(--bg-secondary);
}

.cmd-table code {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.8125rem;
}

.feature-table {
  font-size: 0.8125rem;
}

.feature-table th,
.feature-table td {
  padding: 0.75rem 0.875rem;
}

/* Code Block Styles */
pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.25rem 0;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.875rem;
  line-height: 1.6;
}

code {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.8125rem;
  color: var(--primary);
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 0.875rem;
}

/* Lab Image */
.lab-image {
  margin: 1.25rem 0;
  text-align: center;
}

.lab-image img {
  max-width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.image-caption {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.625rem;
  font-style: italic;
}

/* Resource Note */
.resource-note {
  margin-top: 1.25rem;
  padding: 0.875rem 1.125rem;
  background: var(--warning-bg, #fffbeb);
  border-left: 3px solid var(--warning, #f59e0b);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Button Disabled State */
.btn-disabled {
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
  pointer-events: none;
}

/* Responsive */
@media (max-width: 992px) {
  .lab-layout {
    grid-template-columns: 1fr;
  }

  .lab-sidebar {
    order: 2;
  }

  .lab-content {
    order: 1;
  }

  .sidebar-sticky {
    position: relative;
    top: 0;
  }

  .lab-nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .lab-info-grid {
    grid-template-columns: 1fr;
  }

  .all-labs-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .lab-header-title {
    font-size: 1.75rem;
  }

  .lab-detail {
    padding: 1.5rem;
  }

  .lab-detail-title {
    font-size: 1.5rem;
  }

  .lab-section-title {
    font-size: 1.125rem;
  }

  .lab-section-content {
    padding-left: 0;
  }

  .task-block {
    padding: 1.25rem;
  }

  .resource-item {
    flex-wrap: wrap;
  }

  .all-labs {
    padding: 1.5rem;
  }

  .resource-download-box .download-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Print styles */
@media print {
  .lab-sidebar,
  .header,
  .footer {
    display: none;
  }

  .lab-layout {
    grid-template-columns: 1fr;
  }

  .lab-content {
    box-shadow: none;
  }
}