/* Design System & Reset */
:root {
  /* Dark Theme variables (default) */
  --bg-app: #0b0f19;
  --bg-sidebar: #0f1524;
  --bg-card: #151d30;
  --bg-code: #0a0e17;
  --bg-code-header: #121826;
  --bg-input: #1a2336;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-light: #e5e7eb;
  
  --border: #1e293b;
  --border-focus: #4f46e5;
  
  --primary: #10b981; /* WhatsApp Emerald */
  --primary-hover: #059669;
  --primary-light: rgba(16, 185, 129, 0.1);
  
  --accent: #6366f1; /* Indigo */
  --accent-light: rgba(99, 102, 241, 0.1);
  
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.1);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 280px;
  --header-height: 70px;
}

[data-theme="light"] {
  --bg-app: #f9fafb;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-code: #0f172a;
  --bg-code-header: #1e293b;
  --bg-input: #f3f4f6;
  
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --text-light: #374151;
  
  --border: #e5e7eb;
  --border-focus: #3b82f6;
  
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-light: rgba(16, 185, 129, 0.08);
  
  --accent: #4f46e5;
  --accent-light: rgba(79, 70, 229, 0.08);
  
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

/* App Layout Grid */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition), background-color var(--transition), border-color var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
}

.badge-accent {
  background-color: var(--accent-light);
  color: #818cf8;
  border: 1px solid rgba(129, 140, 248, 0.2);
}

/* Search Box */
.search-container {
  padding: 16px 20px;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 32px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

#api-search {
  width: 100%;
  padding: 10px 12px 10px 38px;
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  transition: var(--transition);
}

#api-search:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Nav Menu Tree */
.nav-menu {
  flex: 1;
  overflow-y: auto;
  padding: 10px 14px;
}

.nav-menu::-webkit-scrollbar {
  width: 4px;
}

.nav-menu::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding-left: 10px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--bg-input);
}

.nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
  font-weight: 600;
}

.nav-method {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 5px;
  border-radius: 4px;
  min-width: 38px;
  text-align: center;
  line-height: 1;
}

.nav-method.POST {
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Sidebar Footer & Theme Toggle */
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.theme-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

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

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .sun-icon {
  display: block;
}
[data-theme="dark"] .moon-icon {
  display: none;
}
[data-theme="light"] .sun-icon {
  display: none;
}
[data-theme="light"] .moon-icon {
  display: block;
}

/* Main Content Panel */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevents flex items from overflowing */
}

/* Sticky Header */
.top-nav {
  height: var(--header-height);
  background-color: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  transition: background-color var(--transition), border-color var(--transition);
}

[data-theme="light"] .top-nav {
  background-color: rgba(255, 255, 255, 0.8);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

.breadcrumb-container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.breadcrumb-root {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-main);
}

.breadcrumb-active {
  color: var(--primary);
  font-weight: 600;
}

.global-inputs {
  display: flex;
  gap: 16px;
}

.global-input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.global-input-group label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.global-input-group input {
  padding: 6px 12px;
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 12px;
  font-family: var(--font-sans);
  width: 200px;
  transition: var(--transition);
}

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

/* Documentation Body Grid */
.docs-body {
  padding: 0 40px;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

/* Doc Section Layout (Stripe-like Redoc) */
.doc-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
  opacity: 0.3;
  transition: opacity 0.4s ease;
}

.doc-section.active {
  opacity: 1;
}

/* Documentation Left Column */
.doc-left-column {
  min-width: 0;
}

.doc-left-column h1 {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.doc-left-column h2 {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.doc-left-column h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 14px;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.doc-left-column p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 20px;
}

.doc-left-column p.lead {
  font-size: 17px;
  color: var(--text-light);
}

.doc-left-column code {
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--primary);
}

/* Endpoint Headers Meta */
.endpoint-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.method-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  text-transform: uppercase;
}

.method-badge.post {
  background-color: var(--primary);
  color: #0b0f19;
}

.endpoint-path {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  word-break: break-all;
}

/* Cards & Alerts */
.card {
  display: flex;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 8px;
  margin: 24px 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
}

.card-icon {
  font-size: 20px;
  line-height: 1;
}

.status-card {
  border-left: 4px solid var(--accent);
}

.info-card {
  border-left: 4px solid var(--primary);
}

.warning-card {
  border-left: 4px solid var(--warning);
  background-color: rgba(245, 158, 11, 0.05);
}

.card strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.card p {
  margin-bottom: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* Parameters List Tables */
.param-list {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--bg-card);
  margin-bottom: 30px;
}

.param-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.param-row:last-child {
  border-bottom: none;
}

.param-name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.param-name .required {
  color: #ef4444;
  margin-left: 2px;
}

.param-details {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.param-type {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
}

.param-desc {
  font-size: 13px;
  color: var(--text-muted);
}

.param-input {
  padding: 8px 12px;
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  width: 100%;
  max-width: 400px;
  transition: var(--transition);
}

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

/* Right Column (Playground & Snippets) */
.doc-right-column {
  position: sticky;
  top: 90px;
  align-self: start;
}

.code-panel, .playground {
  background-color: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header, .tabs-header {
  background-color: var(--bg-code-header);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.code-header span {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.tabs-header {
  justify-content: flex-start;
  gap: 4px;
  padding: 0 16px;
  height: 48px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  padding: 12px 14px;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary);
}

.copy-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: var(--transition);
}

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

.copy-icon {
  width: 18px;
  height: 18px;
}

/* Code Pre Blocks */
.code-blocks {
  position: relative;
}

.tab-content {
  display: none;
  margin: 0;
}

.tab-content.active {
  display: block;
}

.code-body pre, .code-blocks pre {
  padding: 20px;
  margin: 0;
  overflow-x: auto;
}

.code-body code, .code-blocks code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #a5b4fc;
}

/* Config Table */
.config-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.config-table th, .config-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.config-table th {
  background-color: var(--bg-code-header);
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.config-table td code {
  color: var(--primary);
}

/* Response Section in Playground */
.response-header {
  background-color: var(--bg-code-header);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.response-body pre {
  margin: 0;
  padding: 20px;
  background-color: #06090e;
  overflow-x: auto;
}

.response-body code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #34d399; /* Light Green */
}

/* Mobile Responsiveness */
@media (max-width: 1200px) {
  .doc-section {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 50px 0;
  }
  
  .doc-right-column {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 240px;
  }
  
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .top-nav {
    padding: 0 20px;
  }
  
  .global-inputs {
    display: none; /* Hide global inputs inside mobile viewport header */
  }
  
  .docs-body {
    padding: 0 20px;
  }
  
  .param-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
}

.whatsapp-icon {
  width: 28px;
  height: 28px;
}

.whatsapp-tooltip {
  position: absolute;
  right: 70px;
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  box-shadow: var(--shadow-md);
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}