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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #30363d;
  --border-color: #30363d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-orange: #f0883e;
  --accent-red: #f85149;
  --accent-purple: #a371f7;
  --code-bg: #0d1117;
  --input-bg: #0d1117;
  --input-border: #30363d;
}

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

/* Top Navigation */
.top-nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.1rem;
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-tabs {
  display: flex;
  gap: 1rem;
}

.nav-tab {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.nav-tab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-tab.active {
  background: var(--bg-tertiary);
  color: var(--accent-blue);
}

.nav-right {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-button {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-button:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.theme-toggle {
  background: transparent;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-hover);
}

/* Main Container */
.container {
  display: grid;
  grid-template-columns: 280px 1fr 450px;
  height: calc(100vh - 60px);
  overflow: hidden;
}

/* Left Sidebar */
.sidebar-left {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 1rem;
}

.search-box {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-box input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 0.375rem;
  padding: 0.5rem 2.5rem 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.search-icon {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
}

.api-navigation {
  padding-bottom: 2rem;
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.nav-category {
  margin-bottom: 0.5rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border-radius: 0.375rem;
  transition: all 0.2s;
  font-weight: 500;
}

.category-header:hover {
  background: var(--bg-hover);
}

.category-icon {
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.category-header.active .category-icon {
  transform: rotate(90deg);
}

.category-items {
  display: none;
  padding-left: 0.5rem;
  margin-top: 0.25rem;
}

.category-items.active {
  display: block;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  margin: 0.125rem 0;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.9rem;
}

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

.nav-item.active {
  background: var(--bg-tertiary);
  color: var(--accent-blue);
}

.method-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  text-transform: uppercase;
}

.method-badge.get {
  background: rgba(63, 185, 80, 0.2);
  color: var(--accent-green);
}

.method-badge.post {
  background: rgba(88, 166, 255, 0.2);
  color: var(--accent-blue);
}

.method-badge.patch {
  background: rgba(240, 136, 62, 0.2);
  color: var(--accent-orange);
}

.method-badge.delete {
  background: rgba(248, 81, 73, 0.2);
  color: var(--accent-red);
}

/* Main Content */
.main-content {
  background: var(--bg-primary);
  overflow-y: auto;
  padding: 2rem;
}

.welcome-screen {
  text-align: center;
  padding: 4rem 2rem;
}

.welcome-screen h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent-blue);
}

.welcome-screen p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.quick-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.quick-link-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.quick-link-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.endpoint-header {
  margin-bottom: 2rem;
}

.endpoint-title {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.endpoint-url {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-secondary);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  border: 1px solid var(--border-color);
}

.endpoint-url .method-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
}

.endpoint-url-text {
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: var(--accent-blue);
}

.endpoint-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.params-section {
  margin-top: 2rem;
}

.params-section h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.param-group {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

.param-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.param-name {
  font-family: 'Courier New', monospace;
  color: var(--accent-purple);
  font-weight: 600;
}

.param-type {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.param-required {
  background: var(--accent-red);
  color: white;
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
}

.param-optional {
  background: var(--text-muted);
  color: white;
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
}

.param-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.param-input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

.param-input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

/* Right Sidebar */
.sidebar-right {
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.code-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.language-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.lang-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.lang-tab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.lang-tab.active {
  background: var(--bg-tertiary);
  color: var(--accent-blue);
}

.credentials-section {
  margin-bottom: 1rem;
}

.credentials-section h4 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.input-field {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
}

.input-field:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.code-example-section {
  margin-bottom: 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.section-header h4 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.copy-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0;
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--accent-green);
  overflow: auto;
  flex: 1;
  white-space: pre;
  counter-reset: line;
}

.code-block.with-lines {
  padding-left: 0;
}

.code-block .line {
  display: block;
  padding: 0 1rem;
  position: relative;
}

.code-block .line::before {
  counter-increment: line;
  content: counter(line);
  display: inline-block;
  width: 3rem;
  text-align: right;
  padding-right: 1rem;
  margin-right: 1rem;
  color: var(--text-muted);
  user-select: none;
  border-right: 1px solid var(--border-color);
}

.code-block .line:hover {
  background: rgba(88, 166, 255, 0.05);
}

.response-placeholder {
  color: var(--text-muted);
  font-style: italic;
  padding: 1rem;
}

/* Better JSON syntax highlighting */
.json-key {
  color: #79c0ff;
}

.json-string {
  color: #a5d6ff;
}

.json-number {
  color: #79c0ff;
}

.json-boolean {
  color: #ff7b72;
}

.json-null {
  color: #ff7b72;
}

.try-it-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  margin: 1rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s;
}

.try-it-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(88, 166, 255, 0.4);
}

.try-it-btn:active {
  transform: translateY(0);
}

.response-section {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.status-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-weight: 600;
}

.status-badge.success {
  background: rgba(63, 185, 80, 0.2);
  color: var(--accent-green);
}

.status-badge.error {
  background: rgba(248, 81, 73, 0.2);
  color: var(--accent-red);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.loading-overlay.hidden {
  display: none;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(88, 166, 255, 0.3);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bg-hover);
}

/* Responsive */
@media (max-width: 1400px) {
  .container {
    grid-template-columns: 260px 1fr 400px;
  }
}

@media (max-width: 1200px) {
  .container {
    grid-template-columns: 240px 1fr 350px;
  }
}