/* Reference System Styles - Dense, Technical, Fast */

/* === Font Loading === */
@font-face {
  font-family: "JetBrains Mono";
  src: url("https://cdn.jsdelivr.net/gh/JetBrains/JetBrainsMono@2.304/fonts/webfonts/JetBrainsMono-Regular.woff2")
    format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* === Design Tokens === */
:root {
  /* Colors - Light Theme */
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-text-muted: #666666;
  --color-accent: #0066cc;
  --color-accent-hover: #0052a3;
  --color-border: #e5e5e5;
  --color-code-bg: #f7f7f7;
  --color-code-border: #e0e0e0;
  --color-search-highlight: #ffeb3b;

  /* Typography */
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;
  --font-size-base: 15px;
  --line-height-tight: 1.4;
  --line-height-normal: 1.6;

  /* Layout */
  --header-height: 56px;
  --sidebar-width: 240px;
  --utilities-width: 240px;
  --content-max-width: 800px;
  --spacing-unit: 8px;

  /* Z-indices */
  --z-header: 100;
  --z-search: 200;
  --z-mobile-menu: 150;
}

[data-theme="dark"] {
  --color-bg: #0a0a0a;
  --color-text: #e5e5e5;
  --color-text-muted: #999999;
  --color-accent: #4d9fff;
  --color-accent-hover: #66aaff;
  --color-border: #2a2a2a;
  --color-code-bg: #1a1a1a;
  --color-code-border: #333333;
  --color-search-highlight: #664400;
}

/* === Base Styles === */
html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: var(--line-height-normal);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: calc(var(--spacing-unit) * 2);
  letter-spacing: -0.02em;
}

h1 {
  font-size: 32px;
  font-weight: 700;
}
h2 {
  font-size: 24px;
  margin-top: calc(var(--spacing-unit) * 6);
  padding-top: calc(var(--spacing-unit) * 2);
}
h3 {
  font-size: 20px;
  margin-top: calc(var(--spacing-unit) * 4);
}

p {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

p:last-child {
  margin-bottom: 0;
}

/* Lists */
ul, ol {
  margin-bottom: calc(var(--spacing-unit) * 2);
  padding-left: calc(var(--spacing-unit) * 3);
}

li {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

li:last-child {
  margin-bottom: 0;
}

/* Blockquotes */
blockquote {
  margin: calc(var(--spacing-unit) * 3) 0;
  padding: 0 calc(var(--spacing-unit) * 2);
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-muted);
  font-style: italic;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 2px 6px;
  border: 1px solid var(--color-code-border);
}

pre {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  padding: calc(var(--spacing-unit) * 2);
  overflow-x: auto;
  margin-bottom: calc(var(--spacing-unit) * 3);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 14px;
  line-height: var(--line-height-tight);
}

/* === Header === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
}

.header-content {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 3);
  height: 100%;
  padding: 0 calc(var(--spacing-unit) * 3);
  max-width: 1440px;
  margin: 0 auto;
}

.site-logo {
  font-weight: 600;
  font-size: 18px;
  color: var(--color-text);
  white-space: nowrap;
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

/* === Search === */
.search-container {
  flex: 1;
  max-width: 600px;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1.5);
  width: 100%;
  padding: 8px 16px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
}

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

.search-trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.search-icon {
  flex-shrink: 0;
}

.search-placeholder {
  flex: 1;
  text-align: left;
}

.search-shortcut {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 6px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 3px;
}

/* === Search Overlay === */
.search-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-search);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.search-overlay[hidden] {
  display: none;
}

[data-theme="dark"] .search-overlay {
  background-color: rgba(0, 0, 0, 0.8);
}

.search-modal {
  width: 90%;
  max-width: 700px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1.5);
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 16px;
  color: var(--color-text);
  outline: none;
}

.search-escape {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 6px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 3px;
}

.search-results {
  max-height: 60vh;
  overflow-y: auto;
}

/* === Theme Toggle === */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  cursor: pointer;
  color: var(--color-text);
  transition: all 0.2s ease;
}

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

.theme-icon-light {
  display: block;
}

.theme-icon-dark {
  display: none;
}

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

[data-theme="dark"] .theme-icon-dark {
  display: block;
}

/* === Layout === */
.layout-container {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
  max-width: 1440px;
  margin-left: auto;
  margin-right: auto;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-width);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  background-color: var(--color-bg);
}

.sidebar-nav {
  padding: calc(var(--spacing-unit) * 3);
}

.nav-section {
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.nav-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

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

.nav-item {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  color: var(--color-text);
  font-size: 14px;
  border-radius: 3px;
  transition: all 0.1s ease;
}

.nav-link:hover {
  background-color: var(--color-code-bg);
  text-decoration: none;
}

.nav-link.active {
  background-color: var(--color-accent);
  color: white;
}

.nav-link.active:hover {
  background-color: var(--color-accent-hover);
}

.nav-count {
  font-size: 12px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.nav-note {
  font-size: 13px;
  color: var(--color-text-muted);
  font-style: italic;
  padding: calc(var(--spacing-unit) * 2);
}

/* === Main Content === */
.main-content {
  flex: 1;
  padding: calc(var(--spacing-unit) * 4);
  width: 100%;
  max-width: 100%;
}

/* For post pages with utilities */
.post .main-content {
  max-width: var(--content-max-width);
}

/* === Utilities Panel === */
.utilities-panel {
  width: var(--utilities-width);
  border-left: 1px solid var(--color-border);
  padding: calc(var(--spacing-unit) * 3);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

/* Hide utilities panel when empty */
.utilities-panel:empty {
  display: none;
}

/* === Mobile Menu Toggle === */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background-color: var(--color-accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: var(--z-mobile-menu);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: white;
  margin: 4px auto;
  transition: all 0.3s ease;
}

.mobile-menu-toggle--active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle--active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle--active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .utilities-panel {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-content {
    padding: 0 calc(var(--spacing-unit) * 2);
  }

  .site-logo {
    font-size: 16px;
  }

  .search-container {
    max-width: none;
  }

  .search-trigger {
    padding: 6px 12px;
  }

  .search-placeholder {
    display: none;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: var(--z-mobile-menu);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
  }

  .sidebar--open {
    transform: translateX(0);
  }

  .main-content {
    padding: calc(var(--spacing-unit) * 2);
  }

  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }
}

/* === Utility Classes === */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* === Focus Styles === */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* === Selection === */
::selection {
  background-color: var(--color-accent);
  color: white;
}

[data-theme="dark"] ::selection {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* === Post Styles === */
.post-header {
  margin-bottom: calc(var(--spacing-unit) * 4);
  padding-bottom: calc(var(--spacing-unit) * 3);
  border-bottom: 1px solid var(--color-border);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 2);
  font-size: 14px;
}

.post-tags {
  display: flex;
  gap: calc(var(--spacing-unit) * 1);
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-transform: lowercase;
  text-decoration: none;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tag:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  transform: translateY(-1px);
}

.tag--javascript {
  border-color: #f7df1e;
  color: #323330;
}
.tag--react {
  border-color: #61dafb;
  color: #20232a;
}
.tag--docker {
  border-color: #2496ed;
  color: #2496ed;
}
.tag--config {
  border-color: #4caf50;
  color: #4caf50;
}
.tag--debug {
  border-color: #ff5722;
  color: #ff5722;
}

[data-theme="dark"] .tag--javascript {
  color: #f7df1e;
}
[data-theme="dark"] .tag--react {
  color: #61dafb;
}

.post-date {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.post-raw {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
}

.post-raw:hover {
  color: var(--color-accent);
}

.post-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 2);
  line-height: 1.2;
}

.post-stats {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  font-size: 13px;
  color: var(--color-text-muted);
}

.post-stats span::after {
  content: "•";
  margin-left: calc(var(--spacing-unit) * 2);
  color: var(--color-border);
}

.post-stats span:last-child::after {
  display: none;
}

/* === Code Enhancements === */
.post-content pre {
  position: relative;
}

.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 8px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 12px;
  font-family: var(--font-mono);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
}

.code-copy-btn:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

/* === Utilities Panel Components === */
.toc {
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.utility-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

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

.toc-item {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.toc-item--sub {
  margin-left: calc(var(--spacing-unit) * 2);
}

.toc-link {
  display: block;
  padding: 4px 8px;
  font-size: 14px;
  color: var(--color-text);
  border-left: 2px solid transparent;
  transition: all 0.1s ease;
}

.toc-link:hover {
  color: var(--color-accent);
  text-decoration: none;
  background-color: var(--color-code-bg);
}

.toc-link.active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background-color: var(--color-code-bg);
}

/* === Quick Copy === */
.quick-copy-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 1);
}

.quick-copy-item {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-unit) * 1);
  padding: 6px 8px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  font-size: 13px;
}

.quick-copy-item code {
  flex: 1;
  background: none;
  border: none;
  padding: 0;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy-btn {
  padding: 2px 8px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 11px;
  font-family: var(--font-mono);
  cursor: pointer;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: all 0.1s ease;
}

.copy-btn:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

.copy-btn--success {
  color: #4caf50;
  border-color: #4caf50;
}

.copy-btn--error {
  color: #f44336;
  border-color: #f44336;
}

/* === Draft Banner === */
.draft-banner {
  background: linear-gradient(90deg, #fff3e0 0%, #ffecb3 100%);
  border: 2px solid #ff9800;
  border-radius: 8px;
  margin-bottom: var(--spacing-unit);
  padding: var(--spacing-unit);
}

[data-theme="dark"] .draft-banner {
  background: linear-gradient(90deg, #2d1b00 0%, #3d2600 100%);
  border-color: #ff9800;
}

.draft-banner-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

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

.draft-banner-text {
  flex: 1;
  color: var(--color-text);
  font-weight: 500;
  min-width: 200px;
}

.draft-banner-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background-color 0.2s ease;
  white-space: nowrap;
}

.draft-banner-link:hover {
  background-color: var(--color-accent);
  color: white;
}

@media (max-width: 768px) {
  .draft-banner-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .draft-banner-text {
    min-width: auto;
  }
}