* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --text-color: #1f2937;
  --text-secondary: #6b7280;
  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --border-color: #e5e7eb;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: white;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.brand-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 10px;
  opacity: 0.8;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topnav-item {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 6px;
  transition: all 0.2s;
}

.topnav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.topnav-item.active {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.dropdown {
  position: relative;
}

.dropdown-trigger {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s;
}

.dropdown-trigger:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.chev {
  font-size: 12px;
  transition: transform 0.2s;
}

.dropdown:hover .chev {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 10px 16px;
  text-decoration: none;
  color: var(--text-color);
  font-size: 14px;
  transition: background 0.2s;
}

.dropdown-item:hover {
  background: var(--bg-color);
}

.dropdown-item.active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.icon {
  width: 20px;
  height: 20px;
}

.content {
  flex: 1;
  padding: 24px;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
}

.headline {
  text-align: center;
  margin-bottom: 32px;
}

.section {
  margin-bottom: 32px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary-color);
}

.title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 12px;
}

.subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

.panel {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.panel-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
}

.panel-hint {
  font-size: 13px;
  color: var(--text-secondary);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.card-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-color);
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.card-action {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-color);
}

.card:hover .card-action {
  text-decoration: underline;
}

.features {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(29, 78, 216, 0.05) 100%);
  border-radius: var(--radius);
  padding: 32px;
  margin-top: 16px;
}

.features-title {
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 24px;
  color: var(--text-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.feature-item {
  text-align: center;
}

.feature-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.feature-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-color);
}

.feature-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer {
  background: #1f2937;
  color: rgba(255, 255, 255, 0.8);
  padding: 32px 24px;
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-link:hover {
  color: white;
}

.footer-copyright {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-copyright a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-copyright a:hover {
  color: white;
}

.tool-container {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tool-header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-color);
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--primary-color);
  color: white;
}

.btn:hover {
  background: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
}

.copy-btn {
  padding: 4px 12px;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--primary-color);
  color: white;
  float: right;
  margin-left: 12px;
}

.copy-btn:hover {
  background: var(--primary-dark);
}

.editor-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 400px;
}

.editor {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
}

.editor:last-child {
  border-right: none;
}

.editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #1e1e1e;
  color: #d4d4d4;
}

.editor-title {
  font-size: 13px;
  font-weight: 500;
}

.editor-info {
  font-size: 12px;
  color: #858585;
}

.editor-textarea {
  flex: 1;
  width: 100%;
  min-height: 300px;
  padding: 16px;
  border: none;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  resize: none;
  background: #2d2d2d;
  color: #d4d4d4;
  line-height: 1.5;
}

.editor-textarea:focus {
  outline: none;
}

.editor-textarea::placeholder {
  color: #666;
}

.editor-textarea[readonly] {
  background: #252526;
}

@media (max-width: 768px) {
  .topbar {
    padding: 0 12px;
    height: auto;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
  }

  .topnav {
    flex-wrap: wrap;
    gap: 8px;
  }

  .content {
    padding: 12px;
  }

  .title {
    font-size: 24px;
  }

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

  .editor-container {
    grid-template-columns: 1fr;
  }

  .editor {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .editor:last-child {
    border-bottom: none;
  }

  .tool-header {
    justify-content: center;
  }

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

  .footer-links {
    justify-content: center;
  }

  .footer-copyright {
    flex-direction: column;
    align-items: center;
  }
}

.spider-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.spider-input {
  flex: 1;
  min-width: 200px;
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
}

.spider-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.spider-options {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 16px;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.option-group:last-child {
  margin-bottom: 0;
}

.option-label {
  font-size: 14px;
  font-weight: 500;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  cursor: pointer;
}

.spider-selector {
  display: flex;
  gap: 8px;
}

.spider-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: #fff;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.spider-btn.active {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

.spider-result {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.result-status {
  font-size: 13px;
  color: #666;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-color);
}

.response-content {
  margin: 0;
  padding: 16px;
  max-height: 400px;
  overflow-y: auto;
}

.http-tool {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.http-header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.http-method {
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  background: #fff;
  cursor: pointer;
}

.http-url {
  flex: 1;
  min-width: 200px;
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
}

.http-url:focus {
  outline: none;
  border-color: var(--primary-color);
}

.http-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
}

.http-tab {
  padding: 10px 16px;
  border: none;
  background: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
}

.http-tab.active {
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
}

.http-body {
  min-height: 150px;
}

.http-result {
  background: #1e1e1e;
  border-radius: var(--radius);
  overflow: hidden;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #2d2d2d;
  color: #d4d4d4;
}

.result-status-code {
  font-size: 14px;
  font-weight: 500;
}

.result-time {
  font-size: 12px;
  color: #858585;
}

.result-body {
  padding: 16px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  color: #d4d4d4;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 400px;
  overflow-y: auto;
}

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

:root[data-theme='dark'] {
  --text-color: #e5e7eb;
  --text-secondary: #9ca3af;
  --bg-color: #111827;
  --card-bg: #1f2937;
  --border-color: #374151;
}

[data-theme='dark'] body {
  background-color: var(--bg-color);
  color: var(--text-color);
}

[data-theme='dark'] .topbar {
  background: linear-gradient(135deg, #1e3a5f 0%, #0f2847 100%);
}

[data-theme='dark'] .dropdown-menu {
  background: var(--card-bg);
}

[data-theme='dark'] .dropdown-item {
  color: var(--text-color);
}

[data-theme='dark'] .dropdown-item:hover {
  background: var(--bg-color);
}

[data-theme='dark'] .dropdown-item.active {
  background: rgba(59, 130, 246, 0.2);
}

[data-theme='dark'] .card {
  background: var(--card-bg);
}

[data-theme='dark'] .card-title {
  color: var(--text-color);
}

[data-theme='dark'] .card-desc {
  color: var(--text-secondary);
}

[data-theme='dark'] .features {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(29, 78, 216, 0.08) 100%);
}

[data-theme='dark'] .features-title {
  color: var(--text-color);
}

[data-theme='dark'] .feature-item h4 {
  color: var(--text-color);
}

[data-theme='dark'] .feature-item p {
  color: var(--text-secondary);
}

[data-theme='dark'] .footer {
  background: #111827;
}

[data-theme='dark'] .tool-container {
  background: var(--card-bg);
}

[data-theme='dark'] .tool-header {
  background: var(--bg-color);
}

[data-theme='dark'] .spider-options {
  background: var(--card-bg);
}

[data-theme='dark'] .spider-btn {
  background: var(--card-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

[data-theme='dark'] .spider-result {
  background: var(--card-bg);
}

[data-theme='dark'] .result-status {
  background: var(--bg-color);
  color: var(--text-secondary);
}

[data-theme='dark'] .response-content {
  color: var(--text-color);
}

[data-theme='dark'] .editor-textarea {
  background: #1e1e1e;
  color: #d4d4d4;
}

[data-theme='dark'] .editor-header {
  background: #2d2d2d;
  color: #d4d4d4;
}