/*
Theme Name: Madari
Theme URI: https://madari.example
Author: Madari
Description: Network & Security Knowledge Hub theme. Recreated for WordPress from the original Next.js/Tailwind application: sticky header with search and theme toggle, collapsible sidebar knowledge tree, breadcrumbs, article pages, and interactive Tools (subnet calculator, IP lookup).
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: webase
*/

/* ------------------------------------------------------------------ */
/* Design tokens (mirrors the original site's oklch palette 1:1)      */
/* ------------------------------------------------------------------ */
:root {
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --primary: oklch(0.205 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --chart-1: oklch(0.87 0 0);
  --chart-2: oklch(0.556 0 0);
  --chart-3: oklch(0.439 0 0);
  --chart-4: oklch(0.371 0 0);
  --chart-5: oklch(0.269 0 0);
  --radius: 0.625rem;
  --radius-sm: calc(var(--radius) * 0.6);
  --radius-md: calc(var(--radius) * 0.8);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) * 1.4);
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.145 0 0);
  --sidebar-accent: oklch(0.97 0 0);
  --sidebar-accent-foreground: oklch(0.205 0 0);
  --sidebar-border: oklch(0.922 0 0);
  --font-sans: "Nunito Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

html.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
  --sidebar: oklch(0.205 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.269 0 0);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(1 0 0 / 10%);
}

/* ------------------------------------------------------------------ */
/* Reset & base                                                       */
/* ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; height: 100%; }
body {
  min-height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select { font-family: inherit; font-size: inherit; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, dl, dd { margin: 0; }

/* ------------------------------------------------------------------ */
/* Header                                                              */
/* ------------------------------------------------------------------ */
.site-header {
  /* top offset accounts for WordPress's fixed wp-admin toolbar (visible to
     logged-in users) so the header sticks below it instead of being
     partially covered by it; --wp-admin--admin-bar--height is set by
     WP core itself and is 0/unset for logged-out visitors. */
  position: sticky;
  top: var(--wp-admin--admin-bar--height, 0px);
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 3.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--background);
  padding: 0 1rem;
}
.site-header__menu-btn {
  display: none;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  white-space: nowrap;
}
/* Fixed black/white badge, independent of --background/--foreground (which
   are swapped between themes elsewhere in this file) -- light mode always
   gets a black circle with a white M, dark mode always gets a white circle
   with a dark M. A same-color ring keeps the circle visible even in the
   theme where its fill happens to match the page background. */
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  background: oklch(0.145 0 0);
  color: oklch(0.985 0 0);
  transition: background-color 0.2s ease, color 0.2s ease;
}
html.dark .logo-mark {
  background: oklch(0.985 0 0);
  color: oklch(0.145 0 0);
}
.main-nav {
  display: none;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 500;
}
.main-nav .main-nav-list { display: flex; align-items: center; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.main-nav a:hover { color: var(--primary); }

.main-nav-list .menu-item { position: relative; display: flex; align-items: center; gap: 0.15rem; flex-wrap: wrap; }
.dropdown-toggle {
  border: none;
  background: transparent;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  color: var(--foreground);
  flex-shrink: 0;
}
.dropdown-toggle:hover { background: var(--accent); }
.dropdown-toggle svg { width: 0.85rem; height: 0.85rem; transition: transform 0.15s; }
.menu-item.open > .dropdown-toggle svg { transform: rotate(180deg); }
.sub-menu { display: none; list-style: none; margin: 0; padding: 0.25rem; }
.menu-item.open > .sub-menu { display: block; }
.sub-menu a { display: block; padding: 0.4rem 0.6rem; border-radius: var(--radius-sm); white-space: nowrap; }
.sub-menu a:hover { background: var(--accent); }
.main-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.35rem;
  min-width: 12rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 50;
}
/* Desktop pointer devices also get hover-to-open, on top of the click
   toggle in theme.js (which remains the only trigger on touch/mobile,
   where hover doesn't apply). */
@media (hover: hover) and (pointer: fine) {
  .main-nav .menu-item.has-dropdown:hover > .sub-menu { display: block; }
}

.mobile-main-nav {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
}
.mobile-main-nav .main-nav-list { display: flex; flex-direction: column; gap: 0.15rem; list-style: none; margin: 0; padding: 0; }
.mobile-main-nav .main-nav-list a {
  display: block;
  border-radius: var(--radius-md);
  padding: 0.4rem 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
}
.mobile-main-nav .main-nav-list a:hover { background: var(--accent); }
.mobile-main-nav .menu-item > a { flex: 1; }
.mobile-main-nav .sub-menu {
  flex-basis: 100%;
  margin-left: 1rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border);
}
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
@media (min-width: 768px) {
  .main-nav { display: flex; }
  .site-header__menu-btn { display: none !important; }
}

/* icon button */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--foreground);
  position: relative;
}
.icon-btn:hover { background: var(--accent); color: var(--accent-foreground); }
.icon-btn svg { width: 1.2rem; height: 1.2rem; }

/* theme toggle dropdown */
.theme-toggle { position: relative; }
.theme-toggle .icon-sun, .theme-toggle .icon-moon {
  position: absolute; inset: 0; margin: auto; display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s, opacity 0.2s;
}
html:not(.dark) .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0); }
html.dark .theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0); }
.theme-toggle-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 8rem;
  background: var(--popover);
  color: var(--popover-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  padding: 0.25rem;
  z-index: 510;
}
.theme-toggle-menu.open { display: block; }
.theme-toggle-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 0.875rem;
}
.theme-toggle-menu button:hover { background: var(--accent); }

/* search trigger + modal */
.search-trigger {
  display: none;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  max-width: 20rem;
  border: 1px solid var(--border);
  background: var(--background);
  border-radius: var(--radius-md);
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  cursor: pointer;
}
.search-trigger svg { width: 1rem; height: 1rem; flex-shrink: 0; }
.search-trigger span { flex: 1; text-align: left; }
.search-trigger kbd {
  border: 1px solid var(--border);
  background: var(--muted);
  border-radius: var(--radius-sm);
  padding: 0.1rem 0.35rem;
  font-size: 0.7rem;
}
.search-trigger-icon { display: inline-flex; }
@media (min-width: 640px) {
  .search-trigger { display: flex; }
  .search-trigger-icon { display: none; }
}

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 700;
  background: rgba(0,0,0,0.5);
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1rem;
}
.modal-overlay.open { display: flex; }
.search-modal {
  width: 100%;
  max-width: 32rem;
  background: var(--popover);
  color: var(--popover-foreground);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.search-modal__input-wrap { border-bottom: 1px solid var(--border); padding: 0.75rem; }
.search-modal__input-wrap input {
  width: 100%;
  border: 1px solid var(--input);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  background: var(--background);
  outline: none;
}
.search-modal__input-wrap input:focus { border-color: var(--ring); }
.search-modal__results { max-height: 24rem; overflow-y: auto; padding: 0.5rem; }
.search-group-label {
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.search-result {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  border: none;
  background: transparent;
  text-align: left;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
}
.search-result:hover { background: var(--accent); }
.search-result svg { width: 1rem; height: 1rem; margin-top: 0.15rem; color: var(--muted-foreground); flex-shrink: 0; }
.search-result-title { display: block; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-result-desc { display: block; color: var(--muted-foreground); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-empty { padding: 1rem; font-size: 0.875rem; color: var(--muted-foreground); }
mark { background: color-mix(in oklch, var(--primary) 20%, transparent); color: inherit; border-radius: 2px; }

/* ------------------------------------------------------------------ */
/* Layout: sidebar + main                                              */
/* ------------------------------------------------------------------ */
.layout {
  display: flex;
  flex: 1;
}
.sidebar {
  display: none;
  width: 16rem;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
}
.sidebar-inner {
  position: sticky;
  top: 3.5rem;
  max-height: calc(100vh - 3.5rem);
  overflow-y: auto;
}
@media (min-width: 768px) {
  .sidebar { display: block; }
}
.main-col { min-width: 0; flex: 1; padding: 1.5rem; }
.breadcrumbs-wrap { margin-bottom: 1rem; }

.sidebar-nav { padding: 1rem; font-size: 0.875rem; }
.sidebar-tools-link {
  display: block;
  border-radius: var(--radius-md);
  padding: 0.375rem 0.5rem;
  font-weight: 600;
  margin-top: 0.5rem;
}
.sidebar-tools-link:hover { background: var(--accent); }
.sidebar-tools-link.active { background: var(--accent); color: var(--accent-foreground); }

/* Back link + current-level heading shown above the list whenever the
   sidebar has drilled into a category (absent at the root level). */
.sidebar-back-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: var(--radius-md);
  padding: 0.375rem 0.5rem;
  color: var(--muted-foreground);
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.sidebar-back-link:hover { background: var(--accent); color: var(--accent-foreground); }
.sidebar-back-link svg { width: 0.85rem; height: 0.85rem; flex-shrink: 0; }

.tree-list { display: flex; flex-direction: column; gap: 1px; }
.tree-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  border-radius: var(--radius-md);
  padding: 0.375rem 0.5rem;
  font-weight: 500;
}
.tree-link span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-link:hover { background: var(--accent); }
.tree-link.active { background: var(--accent); color: var(--accent-foreground); }
.tree-chevron { width: 0.85rem; height: 0.85rem; flex-shrink: 0; color: var(--muted-foreground); }
.tree-leaf-link {
  display: block;
  border-radius: var(--radius-md);
  padding: 0.375rem 0.5rem;
  color: var(--muted-foreground);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tree-leaf-link:hover { background: var(--accent); color: var(--accent-foreground); }
.tree-leaf-link.active { background: var(--accent); color: var(--accent-foreground); }

/* mobile off-canvas sidebar */
@media (max-width: 767px) {
  .site-header__menu-btn { display: inline-flex; }
}
.mobile-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 600;
  background: rgba(0,0,0,0.5);
}
.mobile-sidebar-overlay.open { display: block; }
.mobile-sidebar-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 18rem;
  max-width: 85vw;
  background: var(--background);
  z-index: 601;
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  overflow-y: auto;
  box-shadow: 4px 0 24px rgba(0,0,0,0.2);
}
.mobile-sidebar-overlay.open .mobile-sidebar-panel { transform: translateX(0); }
.mobile-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding: 1rem;
  font-weight: 600;
}

/* ------------------------------------------------------------------ */
/* Breadcrumbs                                                         */
/* ------------------------------------------------------------------ */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}
.breadcrumbs .crumb { display: flex; align-items: center; gap: 0.25rem; }
.breadcrumbs a:hover { color: var(--foreground); }
.breadcrumbs .current { font-weight: 500; color: var(--foreground); }
.breadcrumbs svg { width: 0.85rem; height: 0.85rem; }

/* ------------------------------------------------------------------ */
/* Buttons                                                              */
/* ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn svg { width: 1rem; height: 1rem; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); }
.btn-primary:hover { opacity: 0.9; }
.btn-outline { border-color: var(--border); background: transparent; color: var(--foreground); }
.btn-outline:hover { background: var(--accent); }

/* ------------------------------------------------------------------ */
/* Home page                                                            */
/* ------------------------------------------------------------------ */
.hero { margin-bottom: 3rem; }
.hero h1 { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 1rem; }
.hero p { max-width: 42rem; font-size: 1.125rem; color: var(--muted-foreground); }
.section-title { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 1rem; }

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px) { .card-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .card-grid { grid-template-columns: 1fr 1fr 1fr; } }

.card {
  display: block;
  height: 100%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--card-foreground);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--primary); }
.card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.35rem; }
.card-desc { font-size: 0.9rem; color: var(--muted-foreground); }

.latest-list { display: flex; flex-direction: column; }
.latest-item { padding: 1.5rem 0; border-bottom: 1px solid var(--border); }
.latest-item:first-child { padding-top: 0; }
.latest-item:last-child { border-bottom: none; padding-bottom: 0; }
.latest-item-title { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 0.3rem; }
.latest-item-title a:hover { color: var(--primary); }
.latest-item-meta { font-size: 0.8rem; color: var(--muted-foreground); margin-bottom: 0.6rem; }
.latest-item-excerpt { color: var(--muted-foreground); margin-bottom: 0.6rem; }
.latest-item-more { font-weight: 600; font-size: 0.9rem; }
.latest-item-more:hover { color: var(--primary); }

/* generic page (folder listing / article) */
.page-head { margin-bottom: 2rem; }
.page-head h1 { font-size: 1.875rem; font-weight: 700; letter-spacing: -0.02em; }
.page-head p { margin-top: 0.5rem; color: var(--muted-foreground); }
.empty-note { color: var(--muted-foreground); }

/* ------------------------------------------------------------------ */
/* Article / prose                                                     */
/* ------------------------------------------------------------------ */
.article { max-width: 48rem; }
.article-head { margin-bottom: 1.5rem; }
.article-head h1 { font-size: 1.875rem; font-weight: 700; letter-spacing: -0.02em; }
.article-summary { margin-top: 0.6rem; font-size: 1.125rem; color: var(--muted-foreground); }
.badges { margin-top: 0.75rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  background: var(--secondary);
  color: var(--secondary-foreground);
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
}

.prose { max-width: none; line-height: 1.75; }
.prose h1, .prose h2, .prose h3, .prose h4 { font-weight: 700; letter-spacing: -0.01em; margin: 1.6em 0 0.6em; }
.prose h1 { font-size: 1.6em; }
.prose h2 { font-size: 1.4em; }
.prose h3 { font-size: 1.2em; }
.prose p { margin: 1em 0; }
.prose ul, .prose ol { margin: 1em 0; padding-left: 1.5em; }
.prose li { margin: 0.35em 0; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--primary); }
.prose code { font-family: var(--font-mono); background: var(--muted); border-radius: var(--radius-sm); padding: 0.15em 0.4em; font-size: 0.875em; }
.prose pre {
  font-family: var(--font-mono);
  border: 1px solid var(--border);
  background: var(--muted);
  color: var(--foreground);
  border-radius: var(--radius-md);
  padding: 1em;
  overflow-x: auto;
  margin: 1.2em 0;
}
.prose pre code { background: none; padding: 0; font-size: 0.85em; }
.code-block { position: relative; }
.code-block .code-copy-btn { position: absolute; top: 0.6rem; right: 0.6rem; }
.prose img { border-radius: var(--radius-md); border: 1px solid var(--border); margin: 1em 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 0.9em; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.5em 0.75em; text-align: left; }
.prose th { background: var(--muted); font-weight: 600; }
.prose blockquote { border-left: 3px solid var(--border); padding-left: 1em; color: var(--muted-foreground); margin: 1em 0; }
.download-icon { width: 0.85em; height: 0.85em; display: inline; vertical-align: -0.05em; }

/* ------------------------------------------------------------------ */
/* Tools page                                                          */
/* ------------------------------------------------------------------ */
.tools-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 1024px) { .tools-grid { grid-template-columns: 1fr 1fr; } }
#subnet-calculator { grid-column: 1 / -1; }

.result-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}
.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--foreground);
  border-radius: var(--radius-md);
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-copy:hover { background: var(--accent); color: var(--accent-foreground); }
.btn-copy.copied { background: var(--foreground); color: var(--background); border-color: var(--foreground); }

.ip-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.ip-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--secondary);
  color: var(--secondary-foreground);
}
.ip-badge-type { background: var(--accent); color: var(--accent-foreground); }

.section-sub-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
  margin-bottom: 0.75rem;
}
.binary-section { border-top: 1px solid var(--border); padding-top: 1rem; margin-top: 1.25rem; }
.binary-grid { display: flex; flex-direction: column; gap: 0.6rem; }
.binary-grid dt { color: var(--muted-foreground); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
.binary-grid dd {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--muted);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  word-break: break-all;
}

.widget-card {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--card-foreground);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}
.widget-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.widget-card__title { font-size: 1.1rem; font-weight: 600; }
.widget-card__desc { font-size: 0.875rem; color: var(--muted-foreground); margin-top: 0.25rem; }

.field { margin-bottom: 1.25rem; }
.field label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 0.4rem; }
.field input[type="text"],
.field input[type="number"] {
  width: 100%;
  border: 1px solid var(--input);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  background: var(--background);
  outline: none;
}
.field input[type="text"]:focus,
.field input[type="number"]:focus { border-color: var(--ring); }
.field input[aria-invalid="true"] { border-color: var(--destructive); }
.field-error { color: var(--destructive); font-size: 0.85rem; margin-top: 0.4rem; }
.field-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.4rem; }
.tool-explainer {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--muted-foreground);
}
.mono { font-family: var(--font-mono); }

input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
}

.result-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.15rem 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  font-size: 0.875rem;
}
@media (min-width: 640px) { .result-list { grid-template-columns: 1fr 1fr; } }
.result-list dt { color: var(--muted-foreground); margin-top: 0.5rem; }
.result-list dd { font-family: var(--font-mono); word-break: break-word; }
.result-list dt.full, .result-list dd.full { grid-column: 1 / -1; }

.subnets-field { border-top: 1px solid var(--border); padding-top: 1rem; margin-top: 1.25rem; }
.subnets-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.5rem; }
.subnets-summary { font-size: 0.8rem; color: var(--muted-foreground); margin-bottom: 0; }
.subnets-table-wrap { max-height: 18rem; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-md); }
.subnets-table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
.subnets-table th, .subnets-table td { padding: 0.4rem 0.6rem; text-align: left; white-space: nowrap; font-family: var(--font-mono); }
.subnets-table th { position: sticky; top: 0; background: var(--muted); font-family: var(--font-sans); font-weight: 600; z-index: 1; }
.subnets-table tbody tr:not(:last-child) { border-bottom: 1px solid var(--border); }
.subnets-table tbody tr:hover { background: var(--accent); }

.skeleton-line { height: 1rem; border-radius: var(--radius-sm); background: var(--muted); margin-bottom: 0.5rem; animation: pulse 1.5s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.ip-error { color: var(--destructive); font-size: 0.875rem; }
.ip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 1rem; font-size: 0.875rem; }
.ip-grid dt { color: var(--muted-foreground); }
.spin { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------------ */
/* Footer                                                               */
/* ------------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted-foreground);
}