/* ==========================================================================
   Nexmon API Documentation — ChaibookLM Design System
   Cinematic Dark Mode · Manrope Typography · #f2a23a Primary Accent
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  /* High-Contrast, Eye-Friendly Modern Dark Tokens */
  --color-bg: #0f1319;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #1f2633;
  --color-bg-card: #161c24;
  --color-bg-input: #11151c;
  --color-bg-code: #0b0e14;

  --color-primary: #f59e0b;
  --color-primary-hover: #d97706;
  --color-primary-glow: rgba(245, 158, 11, 0.15);
  --color-primary-subtle: #241d13;

  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;

  --color-border: #222936;
  --color-border-subtle: #2d3748;
  --color-border-accent: rgba(245, 158, 11, 0.4);

  --color-success: #4ade80;
  --color-warning: #f59e0b;
  --color-danger: #f87171;

  --font-sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Manrope", sans-serif;
  --font-mono: "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --sidebar-width: 280px;
  --header-height: 64px;

  --radius-subtle: 4px;
  --radius-button: 8px;
  --radius-card: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  --transition-fast: all 0.15s ease-out;
  --transition-normal: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-low: 0px 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0px 0px 24px rgba(245, 158, 11, 0.25);
}

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

html {
  overflow-x: clip;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-subtle);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* SVG Icon Helper Styles */
.icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  vertical-align: -2px;
}
.icon-sm {
  width: 14px;
  height: 14px;
}
.icon-lg {
  width: 20px;
  height: 20px;
}

/* Typography Hierarchy */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
}

h1 {
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
  letter-spacing: -0.6px;
}

h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 24px;
  letter-spacing: -0.4px;
}

h3 {
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
}

h4 {
  font-size: 12px;
  font-weight: 600;
  line-height: 16px;
  letter-spacing: 0.5px;
}

p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* Buttons (ChaibookLM Specs) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #121212;
  border-radius: var(--radius-button);
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-filled {
  background: #161616;
  color: #c8c8c8;
  border-radius: var(--radius-button);
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border-subtle);
}
.btn-filled:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text);
  border-color: var(--color-primary-accent);
}

.btn-filled-2 {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-radius: var(--radius-button);
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(242, 162, 58, 0.2);
}
.btn-filled-2:hover {
  background: rgba(242, 162, 58, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-radius: var(--radius-button);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
}
.btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-radius: var(--radius-button);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--color-border-subtle);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-pill {
  background: transparent;
  color: var(--color-text);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border-subtle);
}
.btn-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-glow);
}

/* Header & Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #121212;
  border-radius: var(--radius-button);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border: 1px solid rgba(242, 162, 58, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-item {
  padding: 6px 14px;
  border-radius: var(--radius-button);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
}

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

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

.search-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.search-trigger:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.kbd-shortcut {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-secondary);
}

/* Layout Container */
.layout-container {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  padding: 20px 14px;
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  overflow-y: auto;
  z-index: 90;
}

.sidebar-group {
  margin-bottom: 20px;
}

.sidebar-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-text-muted);
  font-weight: 700;
  margin-bottom: 8px;
  padding-left: 8px;
}

.sidebar-nav {
  list-style: none;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-button);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
  margin-bottom: 2px;
}

.sidebar-link:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

.sidebar-link.active {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border-left: 3px solid var(--color-primary);
  font-weight: 600;
}

.sidebar-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
}

/* Main Content Area */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 32px 40px;
  max-width: 1200px;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 48px 24px 40px;
  background: radial-gradient(circle at 50% 0%, var(--color-primary-glow) 0%, transparent 65%);
  border-bottom: 1px solid var(--color-border);
  margin: -32px -40px 40px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-subtle);
  border: 1px solid rgba(242, 162, 58, 0.3);
  color: var(--color-primary);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 32px;
  letter-spacing: -0.6px;
  margin-bottom: 12px;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  max-width: 660px;
  margin: 0 auto 28px;
  line-height: 20px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

.quick-install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--color-bg-code);
  border: 1px solid var(--color-border-subtle);
  padding: 8px 16px;
  border-radius: var(--radius-button);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary);
}

.copy-btn {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: var(--transition-fast);
}
.copy-btn:hover {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}

/* Sections */
.section {
  display: none;
  animation: fadeIn 0.2s ease-out forwards;
}
.section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.section-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 6px;
}

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

/* Cards (ChaibookLM Card Spec) */
.card,
.playground-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-low);
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Playground Workbench */
.playground-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-button);
  padding: 8px 12px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 12px;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.toggle-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.toggle-label {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.event-log-container {
  background: var(--color-bg-code);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-button);
  padding: 14px;
  height: 380px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 11px;
}

.event-item {
  margin-bottom: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  background: #141414;
  border-left: 3px solid var(--color-primary);
}

.event-item.tool_call {
  border-left-color: #38bdf8;
}
.event-item.approval {
  border-left-color: var(--color-warning);
  background: rgba(242, 162, 58, 0.1);
}
.event-item.memory {
  border-left-color: #c084fc;
}
.event-item.success {
  border-left-color: var(--color-success);
}

.event-header {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-muted);
  font-size: 10px;
  margin-bottom: 4px;
}

.event-type {
  font-weight: 600;
  color: var(--color-text);
}

.approval-box {
  background: rgba(242, 162, 58, 0.1);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-button);
  padding: 14px;
  margin-top: 14px;
  display: none;
}

.approval-box.active {
  display: block;
}

/* Module Filter Bar & Sections */
.module-filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.filter-btn.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
}

.module-section {
  margin-bottom: 40px;
  scroll-margin-top: 80px;
}

.module-header {
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}

.module-title {
  font-size: 16px;
  font-weight: 700;
  margin: 6px 0 2px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.module-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.module-code-box {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
  padding: 16px;
  margin-top: 16px;
}

.module-code-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--color-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* API Grid */
.api-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

.api-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: var(--transition-fast);
}

.api-card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-2px);
}

.api-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-class {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}
.badge-function {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}
.badge-interface {
  background: rgba(74, 222, 128, 0.15);
  color: var(--color-success);
}

.api-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  margin: 10px 0 6px;
}

.code-block {
  background: var(--color-bg-code);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-subtle);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text);
  overflow-x: auto;
  margin: 10px 0;
  line-height: 1.5;
}

/* Examples Gallery */
.examples-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
}

.example-list {
  list-style: none;
}

.example-item {
  padding: 8px 12px;
  border-radius: var(--radius-button);
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition-fast);
  margin-bottom: 2px;
}

.example-item:hover,
.example-item.active {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.example-item.active {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border-left: 3px solid var(--color-primary);
  font-weight: 600;
}

/* Search Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.modal-overlay.active {
  display: flex;
}

.search-modal {
  width: 90%;
  max-width: 600px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-low);
  overflow: hidden;
}

.search-input-wrap {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-input-wrap input {
  width: 100%;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 14px;
  font-family: var(--font-sans);
}
.search-input-wrap input:focus {
  outline: none;
}

.search-results {
  max-height: 360px;
  overflow-y: auto;
  padding: 10px;
}

.search-result-item {
  padding: 10px 12px;
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: var(--transition-fast);
}
.search-result-item:hover {
  background: var(--color-bg-secondary);
}

.result-title {
  font-weight: 600;
  font-size: 13px;
  color: var(--color-primary);
}
.result-snippet {
  font-size: 11px;
  color: var(--color-text-secondary);
}

/* Interactive Terminal CLI Mockup Screen */
.cli-terminal-window {
  background: #0d0d0d;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  margin-top: 16px;
  margin-bottom: 24px;
}

.cli-terminal-header {
  background: #181818;
  border-bottom: 1px solid var(--color-border-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cli-window-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cli-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.cli-dot.close {
  background: #ff5f56;
}
.cli-dot.minimize {
  background: #ffbd2e;
}
.cli-dot.maximize {
  background: #27c93f;
}

.cli-window-title {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
}

.cli-terminal-tabs {
  display: flex;
  gap: 6px;
  background: #141414;
  padding: 8px 16px;
  border-bottom: 1px solid var(--color-border-subtle);
  overflow-x: auto;
}

.cli-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-button);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
}

.cli-tab-btn:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.cli-tab-btn.active {
  background: var(--color-bg-tertiary);
  color: var(--color-primary);
  border-color: var(--color-border-accent);
}

.cli-terminal-body {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: #e2e8f0;
  min-height: 280px;
  max-height: 420px;
  overflow-y: auto;
  background: #0c0c0c;
}

.cli-accent {
  color: var(--color-primary);
  font-weight: 600;
}
.cli-success {
  color: var(--color-success);
  font-weight: 600;
}
.cli-cyan {
  color: #38bdf8;
}
.cli-muted {
  color: var(--color-text-muted);
}
.cli-prompt-symbol {
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 6px;
}

.cli-blinking-cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: var(--color-primary);
  margin-left: 4px;
  vertical-align: middle;
  animation: blinkCursor 1s infinite;
}

@keyframes blinkCursor {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

/* Footer */
.doc-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-muted);
  font-size: 12px;
}

/* Responsive Rules */
@media (max-width: 900px) {
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
    padding: 20px 16px;
  }
  .playground-grid {
    grid-template-columns: 1fr;
  }
  .examples-layout {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 20px;
    line-height: 28px;
  }
}