/* Help Center Styles */
.help-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-6);
  padding-bottom: 80px;
}

.help-header {
  text-align: center;
  margin-bottom: var(--space-8);
  padding-top: 20px;
}

.help-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.help-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto var(--space-5);
}

.help-search {
  max-width: 520px;
  margin: 0 auto;
  position: relative;
}

.help-search input {
  width: 100%;
  padding: 16px 20px 16px 56px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.help-search input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.help-search svg {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* TOC Navigation */
.help-toc-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: var(--space-8);
}

.toc-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}

.toc-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.05);
}

.toc-card.active {
  border-color: var(--color-primary);
  background: rgba(139, 92, 246, 0.1);
}

.toc-card .toc-number {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.toc-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.toc-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Help Content */
.help-content-area {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.help-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.help-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.help-section-header h2 {
  font-size: 1.375rem;
  font-weight: 700;
}

.help-section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: white;
}

.help-content-block h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
  margin-top: 28px;
}

.help-content-block h3:first-child {
  margin-top: 0;
}

.help-content-block p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

/* Diagrams */
.help-diagram {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 20px 0;
}

.diagram-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  text-align: center;
}

.diagram-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.diagram-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  min-width: 120px;
}

.diagram-icon {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.diagram-label {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.diagram-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.diagram-arrow {
  font-size: 1.25rem;
  color: var(--color-primary);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.feature-card {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.feature-card a {
  color: var(--color-primary);
  text-decoration: none;
}

.feature-card a:hover {
  text-decoration: underline;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Category List */
.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.category-tag {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 500;
}

/* Workflow Steps */
.workflow-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin: 20px 0;
}

.workflow-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.workflow-step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  color: white;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.workflow-step-content h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.workflow-step-content p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.workflow-line {
  flex: 0.6;
  height: 2px;
  background: var(--border-color);
  margin-top: 20px;
  flex-shrink: 0;
}

/* Info Boxes */
.info-box {
  border-radius: var(--radius-lg);
  padding: 20px;
  margin: 20px 0;
  border-left: 4px solid;
}

.info-box-blue {
  background: rgba(37, 99, 235, 0.08);
  border-color: var(--color-primary);
}

.info-box-green {
  background: rgba(16, 185, 129, 0.08);
  border-color: var(--color-success);
}

.info-box-purple {
  background: rgba(139, 92, 246, 0.08);
  border-color: var(--color-primary-light);
}

.info-box-orange {
  background: rgba(245, 158, 11, 0.08);
  border-color: var(--color-warning);
}

.info-box h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.info-box ul {
  margin: 0;
  padding-left: 20px;
}

.info-box li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Checklist */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-body);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.checklist-item.done {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
}

.check-icon {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-success);
}

.checklist-item span:last-child {
  font-size: 0.9375rem;
}

/* Milestone Example */
.milestone-example {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 20px 0;
}

.milestone-item-card {
  background: var(--bg-body);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
}

.milestone-item-card.completed {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.05);
}

.milestone-item-card.active {
  border-color: rgba(139, 92, 246, 0.4);
  background: rgba(139, 92, 246, 0.05);
}

.milestone-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.milestone-card-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.875rem;
}

.milestone-item-card.completed .milestone-card-status {
  color: var(--color-success);
}

.milestone-item-card.active .milestone-card-status {
  color: var(--color-primary-light);
}

.milestone-item-card.pending .milestone-card-status {
  color: var(--text-muted);
}

.milestone-card-payment {
  display: flex;
  align-items: center;
  gap: 12px;
}

.milestone-card-payment .payment-percent {
  font-weight: 700;
}

.milestone-card-payment .payment-amount {
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(139, 92, 246, 0.1);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.875rem;
}

.milestone-item-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.milestone-item-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.milestone-requirements-mini {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.req-mini-item {
  font-size: 0.8125rem;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
}

.faq-item {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  transition: background var(--transition-normal);
}

.faq-question:hover {
  background: var(--bg-hover);
}

.faq-question h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0;
}

.faq-question svg {
  transition: transform var(--transition-normal);
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 22px 18px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Contact Section */
.contact-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  text-align: center;
  margin-top: 20px;
}

.contact-section h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.contact-section p {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-option {
  padding: 24px;
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.contact-option:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.contact-option-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin: 0 auto 16px;
}

.contact-option h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.contact-option p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .help-toc-nav {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .contact-options {
    grid-template-columns: 1fr;
  }

  .workflow-steps {
    flex-direction: column;
    gap: 20px;
  }

  .workflow-line {
    width: 2px;
    height: 30px;
    margin: 0;
    width: 2px;
  }
}

@media (max-width: 768px) {
  .help-layout {
    padding: var(--space-4);
  }

  .help-header h1 {
    font-size: 1.875rem;
  }

  .help-toc-nav {
    grid-template-columns: 1fr 1fr;
  }

  .help-section {
    padding: 20px;
  }

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

  .diagram-grid {
    flex-direction: column;
  }

  .diagram-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width: 480px) {
  .help-toc-nav {
    grid-template-columns: 1fr;
  }
}