/* ===== Variables ===== */
:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-bg-tertiary: #1a1a1a;
  --color-border: #262626;
  --color-border-hover: #404040;
  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;
  --color-primary: #149073;
  --color-primary-hover: #10725c;
  --color-primary-muted: rgba(20, 144, 115, 0.15);
  --color-accent: #22c55e;
  --color-code-bg: #18181b;
  --color-code-border: #27272a;
  
  --sidebar-width: 280px;
  --header-height: 60px;
  --content-max-width: 900px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

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

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  z-index: 100;
}

.sidebar-header {
  position: sticky;
  top: 0;
  background-color: var(--color-bg-secondary);
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.logo svg {
  color: var(--color-primary);
}

.sidebar-content {
  padding: 16px 0;
}

.nav-section {
  padding: 8px 0;
}

.nav-section-title {
  padding: 8px 24px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.nav-link {
  display: block;
  padding: 8px 24px;
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
  border-left: 2px solid transparent;
}

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

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-muted);
  border-left-color: var(--color-primary);
}

/* ===== Main Content ===== */
.content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.content-wrapper {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 60px 40px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 2.25rem;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

h2 {
  font-size: 1.5rem;
  margin-top: 48px;
  margin-bottom: 16px;
}

h3 {
  font-size: 1.25rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

h4 {
  font-size: 1.1rem;
  margin-top: 24px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

/* ===== Lists ===== */
ul, ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--color-text-secondary);
}

li {
  margin-bottom: 8px;
}

li strong {
  color: var(--color-text);
}

/* ===== Links ===== */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ===== Code ===== */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 2px 6px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

pre {
  margin-bottom: 24px;
  padding: 20px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

pre code {
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.6;
}

.code-block {
  margin-bottom: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-code-border);
}

.code-header {
  padding: 10px 16px;
  background-color: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-code-border);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.code-block pre {
  margin: 0;
  border: none;
  border-radius: 0;
}

/* ===== Tables ===== */
.table-wrapper {
  margin-bottom: 24px;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

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

th {
  background-color: var(--color-bg-tertiary);
  font-weight: 600;
  color: var(--color-text);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  color: var(--color-text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: var(--color-bg-tertiary);
}

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-radius: 4px;
}

.badge-blue {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.badge-green {
  background-color: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

.badge-yellow {
  background-color: rgba(234, 179, 8, 0.15);
  color: #facc15;
}

.badge-red {
  background-color: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.badge-purple {
  background-color: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
}

.badge-gray {
  background-color: rgba(161, 161, 170, 0.15);
  color: #a1a1aa;
}

/* ===== Info Boxes ===== */
.info-box, .warning-box {
  margin-bottom: 24px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border-left: 4px solid;
}

.info-box {
  background-color: var(--color-primary-muted);
  border-color: var(--color-primary);
}

.info-box h4 {
  margin: 0 0 12px 0;
  color: var(--color-primary);
}

.info-box ul {
  margin-bottom: 0;
}

.warning-box {
  background-color: rgba(234, 179, 8, 0.1);
  border-color: #eab308;
}

.warning-box h4 {
  margin: 0 0 8px 0;
  color: #facc15;
}

.warning-box p {
  margin-bottom: 0;
}

/* ===== Tech Grid ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.tech-card {
  padding: 20px;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease;
}

.tech-card:hover {
  border-color: var(--color-border-hover);
}

.tech-card h3 {
  margin: 0 0 8px 0;
  font-size: 1rem;
}

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

/* ===== Architecture Diagram ===== */
.architecture-diagram {
  margin-bottom: 24px;
  padding: 24px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.architecture-diagram pre {
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  font-size: 12px;
  line-height: 1.4;
  color: var(--color-text-secondary);
}

/* ===== Sections ===== */
.doc-section {
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}

.doc-section:last-of-type {
  border-bottom: none;
}

/* ===== Footer ===== */
.doc-footer {
  margin-top: 80px;
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.doc-footer p {
  margin-bottom: 4px;
  color: var(--color-text-muted);
}

.doc-footer .version {
  font-size: 13px;
}

/* ===== Mobile Responsive ===== */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .content {
    margin-left: 0;
  }
  
  .content-wrapper {
    padding: 40px 24px;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.25rem;
  }
  
  .tech-grid {
    grid-template-columns: 1fr;
  }
  
  .table-wrapper {
    font-size: 13px;
  }
  
  th, td {
    padding: 8px 12px;
  }
}

/* ===== Mobile Menu Button ===== */
.mobile-menu-btn {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: none;
  cursor: pointer;
  z-index: 200;
  box-shadow: var(--shadow-lg);
  transition: background-color 0.15s ease;
}

.mobile-menu-btn:hover {
  background-color: var(--color-primary-hover);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
  color: white;
}

@media (max-width: 1024px) {
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* ===== Overlay ===== */
.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 50;
}

.overlay.active {
  display: block;
}

/* ===== Search Highlight ===== */
.search-wrapper {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
}

.search-input {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s ease;
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-input:focus {
  border-color: var(--color-primary);
}

/* ===== Syntax Highlighting (Basic) ===== */
.language-typescript .keyword,
.language-sql .keyword {
  color: #c792ea;
}

.language-typescript .string,
.language-sql .string {
  color: #c3e88d;
}

.language-typescript .comment,
.language-sql .comment {
  color: #546e7a;
  font-style: italic;
}

/* ===== Changelog Styles ===== */
.changelog-entry {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  transition: border-color 0.2s ease;
}

.changelog-entry:hover {
  border-color: var(--color-border-hover);
}

.changelog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.changelog-header h2 {
  font-size: 1.3em;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.changelog-date {
  font-size: 0.9em;
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.version-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  font-size: 0.75em;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.changelog-entry h3 {
  font-size: 1em;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 20px;
  margin-bottom: 10px;
}

.changelog-entry h3:first-of-type {
  margin-top: 0;
}

.changelog-entry ul {
  list-style: none;
  padding-left: 0;
}

.changelog-entry ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.changelog-entry ul li::before {
  content: '•';
  position: absolute;
  left: 8px;
  color: var(--color-primary);
  font-weight: bold;
}

.changelog-entry ul li strong {
  color: var(--color-text);
}

.changelog-entry code {
  background: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* ===== Print Styles ===== */
@media print {
  .sidebar,
  .mobile-menu-btn {
    display: none;
  }
  
  .content {
    margin-left: 0;
  }
  
  .content-wrapper {
    max-width: 100%;
    padding: 20px;
  }
  
  pre, .code-block {
    break-inside: avoid;
  }
  
  .changelog-entry {
    break-inside: avoid;
  }
}