@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap");

:root {
  --gray-1: #3f444c;
  --gray-2: #2d3137;
  --gray-3: #22252a;
  --gray-4: #18191c;
  --gray-5: #151618;
  --gray-6: #111111;
  --white-1: #f3f4f6;
  --white-2: #9ca3af;
  --white-3: #6b7280;
  --accent: #50dfb3;
  --accent-dim: rgba(80, 223, 179, 0.12);
  --accent-border: rgba(80, 223, 179, 0.35);
  --sidebar-width: 260px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: inherit;
  text-decoration: none;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--gray-6);
  color: var(--white-2);
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  line-height: 1.7;
  min-height: 100vh;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--gray-6);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-1);
}

/* Two-Panel App Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

/* Left Selector Panel (Sidebar) */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background-color: var(--gray-5);
  border-right: 1px solid var(--gray-3);
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 100;
  user-select: none;
}

.sidebar-header {
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid var(--gray-3);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white-1);
  letter-spacing: -0.5px;
}

.brand-name::after {
  content: ".";
  color: var(--accent);
}

.brand-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 600;
}

/* Sidebar Search */
.sidebar-search-box {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--gray-3);
}

.sidebar-search-input {
  width: 100%;
  background-color: var(--gray-4);
  border: 1px solid var(--gray-3);
  border-radius: 6px;
  padding: 0.45rem 0.75rem;
  color: var(--white-1);
  font-size: 0.8rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sidebar-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

.sidebar-search-input::placeholder {
  color: var(--white-3);
}

/* Sidebar Navigation Items */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0.5rem;
}

.nav-category {
  margin-bottom: 0.35rem;
}

.nav-category-header {
  display: flex;
  align-items: center;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  transition: background 0.15s;
}

.nav-category-header:hover {
  background: var(--gray-4);
}

.category-toggle-btn {
  background: none;
  border: none;
  color: var(--white-3);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  transition: transform 0.2s ease, color 0.2s;
}

.nav-category.expanded .category-toggle-btn .chevron-icon {
  transform: rotate(90deg);
  color: var(--accent);
}

.chevron-icon {
  display: inline-block;
  transition: transform 0.2s ease;
  font-weight: bold;
}

.category-title-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  color: var(--white-1);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.1rem 0.3rem;
}

.category-title-link.active {
  color: var(--accent);
}

.category-count {
  font-size: 0.7rem;
  color: var(--white-3);
  background: var(--gray-4);
  padding: 0.05rem 0.4rem;
  border-radius: 10px;
  border: 1px solid var(--gray-3);
}

.nav-items-list {
  list-style: none;
  padding-left: 1.25rem;
  margin-top: 0.2rem;
  margin-bottom: 0.3rem;
  display: none;
}

.nav-category.expanded .nav-items-list {
  display: block;
}

.nav-item {
  margin: 0.1rem 0;
}

.nav-item-link {
  display: block;
  padding: 0.3rem 0.6rem;
  color: var(--white-2);
  font-size: 0.8rem;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: all 0.15s ease-in-out;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item-link:hover {
  color: var(--white-1);
  background-color: var(--gray-4);
  border-left-color: var(--white-3);
}

.nav-item-link.active {
  color: var(--accent);
  background-color: var(--accent-dim);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--gray-3);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: 0.75rem;
}

.footer-github-link {
  color: var(--white-3);
  transition: color 0.2s;
}

.footer-github-link:hover {
  color: var(--white-1);
}

/* Right Content Wrapper */
.content-wrapper {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--gray-6);
}

/* Top Header */
.top-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(17, 17, 17, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-3);
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--gray-3);
  border-radius: 4px;
  padding: 0.4rem;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.menu-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--white-1);
  border-radius: 1px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--white-3);
}

.breadcrumb-item {
  color: var(--white-2);
  transition: color 0.15s;
}

.breadcrumb-item:hover {
  color: var(--accent);
}

.breadcrumb-separator {
  color: var(--gray-1);
}

.breadcrumb-current {
  color: var(--white-1);
  font-weight: 500;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-link {
  font-size: 0.8rem;
  color: var(--white-3);
  transition: color 0.15s;
}

.header-link:hover {
  color: var(--white-1);
}

/* Main Panel */
.main-panel {
  flex: 1;
  padding: 2.2rem 3rem 4rem 3rem;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

/* Home View (Stripped-down Util catalog) */
.home-container {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.home-container .page-title {
  margin-bottom: 0.5rem;
}

.catalog-sections {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.catalog-group {
  background: var(--gray-4);
  border: 1px solid var(--gray-3);
  border-radius: 8px;
  padding: 1.25rem 1.4rem;
}

.catalog-group-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--gray-3);
  padding-bottom: 0.4rem;
}

.catalog-group-title a {
  color: var(--accent);
  transition: opacity 0.15s;
}

.catalog-group-title a:hover {
  opacity: 0.8;
}

.catalog-items-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.catalog-items-list li a {
  color: var(--white-2);
  font-size: 0.85rem;
  transition: color 0.15s;
}

.catalog-items-list li a:hover {
  color: var(--white-1);
  text-decoration: underline;
}

/* Category View (Language page) */
.category-view {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.category-view-header {
  border-bottom: 1px solid var(--gray-3);
  padding-bottom: 1.5rem;
}

.category-breadcrumb-tag {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white-1);
  margin-bottom: 0.4rem;
}

.category-desc {
  font-size: 0.9rem;
  color: var(--white-2);
}

.scripts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.script-card {
  background: var(--gray-4);
  border: 1px solid var(--gray-3);
  border-radius: 8px;
  padding: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s ease-in-out;
}

.script-card:hover {
  border-color: var(--accent);
  background: var(--gray-3);
  transform: translateX(3px);
}

.script-card-title {
  font-size: 0.95rem;
  color: var(--white-1);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.script-card-meta {
  font-size: 0.75rem;
  color: var(--white-3);
}

.script-card-arrow {
  color: var(--accent);
  font-weight: bold;
  font-size: 1.1rem;
  transition: transform 0.2s;
}

.script-card:hover .script-card-arrow {
  transform: translateX(4px);
}

/* Article / Script View */
.article {
  margin-bottom: 3rem;
}

.article-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--gray-3);
  padding-bottom: 1.2rem;
}

.article-meta {
  margin-bottom: 0.5rem;
}

.category-badge {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
  transition: opacity 0.2s;
}

.category-badge:hover {
  opacity: 0.8;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white-1);
  letter-spacing: -0.5px;
}

/* Markdown Content Styling */
.content {
  color: var(--white-2);
  line-height: 1.8;
  font-size: 0.9rem;
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  color: var(--white-1);
  margin-top: 2rem;
  margin-bottom: 0.9rem;
  font-weight: 600;
}

.content h1 {
  font-size: 1.6rem;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.3rem;
  width: fit-content;
}

.content h2 {
  font-size: 1.35rem;
  border-bottom: 1px solid var(--gray-3);
  padding-bottom: 0.3rem;
}

.content h3 { font-size: 1.15rem; }
.content h4 { font-size: 1.05rem; }

.content p {
  margin-bottom: 1.2rem;
}

.content a {
  color: var(--accent);
  border-bottom: 1px solid rgba(80, 223, 179, 0.4);
  transition: border-color 0.2s;
}

.content a:hover {
  border-bottom-color: var(--accent);
}

.content ul,
.content ol {
  margin-left: 1.5rem;
  margin-bottom: 1.2rem;
}

.content li {
  margin-bottom: 0.4rem;
}

.content blockquote {
  padding: 0.6rem 1.2rem;
  margin-bottom: 1.2rem;
  border-left: 3px solid var(--accent);
  background: var(--gray-4);
  border-radius: 0 6px 6px 0;
  color: var(--white-1);
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.85rem;
}

.content table th,
.content table td {
  border: 1px solid var(--gray-3);
  padding: 0.6rem 0.8rem;
  text-align: left;
}

.content table th {
  background-color: var(--gray-4);
  color: var(--white-1);
  font-weight: 600;
}

.content table tr:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.02);
}

.content code {
  background-color: var(--gray-4);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  border: 1px solid var(--gray-3);
}

.content pre {
  background-color: var(--gray-4) !important;
  border: 1px solid var(--gray-3);
  border-radius: 8px;
  padding: 1.2rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
  position: relative;
}

.content pre code {
  background: transparent;
  color: var(--white-1);
  border: none;
  padding: 0;
  font-size: 0.82rem;
  line-height: 1.6;
}

.content hr {
  border: none;
  border-top: 1px solid var(--gray-3);
  margin: 2rem 0;
}

/* Copy Button for Code Blocks */
.code-block-wrapper {
  position: relative;
}

.copy-code-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--gray-3);
  border: 1px solid var(--gray-2);
  color: var(--white-3);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  opacity: 0;
}

.code-block-wrapper:hover .copy-code-btn {
  opacity: 1;
}

.copy-code-btn:hover {
  color: var(--white-1);
  border-color: var(--accent);
}

/* Mobile Backdrop */
.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 90;
}

/* Mobile & Tablet Responsiveness */
@media screen and (max-width: 860px) {
  .mobile-menu-btn {
    display: flex;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.25s ease-in-out;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.8);
  }

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

  .sidebar-backdrop.active {
    display: block;
  }

  .top-header {
    padding: 0.6rem 1rem;
  }

  .main-panel {
    padding: 1.5rem 1rem 3rem 1rem;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .categories-grid,
  .scripts-grid {
    grid-template-columns: 1fr;
  }
}