/*
Theme Name: PacketNotes
Theme URI: https://packetnotes.com
Author: PacketNotes
Description: A clean, minimal, Apple-inspired theme for PacketNotes.com — a technical knowledge base for networking, cloud, and automation.
Version: 1.0.1
Requires at least: 6.0
Tested up to: 6.7
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: packetnotes
Tags: blog, one-column, custom-menu, featured-images, translation-ready
*/

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
  --color-bg: #fbfbfd;
  --color-bg-alt: #f5f5f7;
  --color-white: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-text-tertiary: #afafb2;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;
  --color-code-bg: #f5f5f7;
  --color-card-shadow: rgba(0, 0, 0, 0.04);
  --color-card-shadow-hover: rgba(0, 0, 0, 0.08);
  --color-nav-bg: rgba(251, 251, 253, 0.82);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.75rem;
  --font-size-5xl: 3.5rem;
  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.65;
  --max-width: 1080px;
  --max-width-narrow: 720px;
  --nav-height: 168px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style-position: inside;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-4xl); margin-bottom: 1rem; }
h2 { font-size: var(--font-size-3xl); margin-bottom: 0.875rem; }
h3 { font-size: var(--font-size-2xl); margin-bottom: 0.75rem; }
h4 { font-size: var(--font-size-xl); margin-bottom: 0.625rem; }
h5 { font-size: var(--font-size-lg); margin-bottom: 0.5rem; }
h6 { font-size: var(--font-size-base); margin-bottom: 0.5rem; }

p {
  margin-bottom: 1.5rem;
}

strong {
  font-weight: 600;
}

blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

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

hr {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: 3rem 0;
}

/* ==========================================================================
   Code Blocks
   ========================================================================== */

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--color-border-light);
  color: var(--color-text);
}

pre {
  background: var(--color-text);
  color: #e5e5ea;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 2rem 0;
  line-height: 1.6;
  font-size: var(--font-size-sm);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.container--home .post-grid {
  padding-top: 1.5rem;
}

/* Blog index / archives + sidebar */
@media (min-width: 900px) {
  .site-with-sidebar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 2.5rem;
    align-items: start;
  }

  .site-with-sidebar .post-grid {
    grid-template-columns: 1fr;
  }
}

.site-sidebar {
  position: sticky;
  top: calc(env(safe-area-inset-top, 0px) + var(--nav-height) + 1rem);
}

.site-sidebar .widget {
  margin-bottom: 2rem;
}

.site-sidebar .widget-title {
  margin-bottom: 0.75rem;
}

.site-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-sidebar ul li {
  margin-bottom: 0.35rem;
}

.site-sidebar a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.site-sidebar a:hover {
  color: var(--color-accent);
}

.site-sidebar .wp-block-archives-list,
.site-sidebar .wp-block-categories-list,
.site-sidebar .wp-block-page-list {
  padding-left: 0;
}

@media (max-width: 899px) {
  .site-with-sidebar {
    display: block;
  }

  .site-sidebar {
    position: static;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border-light);
  }

  .site-branding {
    max-width: calc(100% - 11rem);
  }
}

.site-content {
  padding-top: calc(env(safe-area-inset-top, 0px) + var(--nav-height) + 2rem);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  min-height: calc(100vh - var(--nav-height));
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  min-height: calc(env(safe-area-inset-top, 0px) + var(--nav-height));
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  background: var(--color-nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border-light);
}

.site-header .container {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-height);
  padding-top: 10px;
  padding-bottom: 10px;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1 1 auto;
  min-width: 0;
  max-width: calc(100% - 12rem);
}

.nav-right {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  z-index: 2;
}

.site-branding__logo {
  display: flex;
  align-items: center;
}

.site-branding__logo a {
  display: flex;
  align-items: center;
  transition: opacity var(--transition);
}

.site-branding__logo a:hover {
  opacity: 0.7;
}

.site-branding__logo img {
  max-height: min(96px, 15vh);
  max-width: min(440px, 50vw);
  width: auto;
  height: auto;
  object-fit: contain;
}

.site-branding__logo-dark {
  display: none;
}

.site-branding__subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  border-left: 1px solid var(--color-border-light);
  padding-left: 0.75rem;
  line-height: 1.3;
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .site-branding__logo-light {
    display: none;
  }
  .site-branding__logo-dark {
    display: block;
  }
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav > ul.packetnotes-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav > ul.packetnotes-menu > li {
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  display: inline-block;
  padding: 0.4rem 0.875rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.main-nav a:hover,
.main-nav .current-menu-item a,
.main-nav .current_page_item a {
  background: var(--color-bg-alt);
  color: var(--color-accent);
}

.main-nav .current-menu-ancestor > a,
.main-nav .current-menu-parent > a {
  color: var(--color-accent);
}

/* Desktop: dropdown sub-menus */
@media (min-width: 769px) {
  .main-nav .submenu-toggle {
    display: none;
  }

  .main-nav .menu-item-has-children,
  .main-nav .page_item_has_children {
    position: relative;
  }

  .main-nav .sub-menu,
  .main-nav ul.children {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    min-width: 220px;
    margin: 0;
    padding: 0.5rem 0;
    list-style: none;
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    z-index: 1100;
  }

  .main-nav .menu-item:hover > .sub-menu,
  .main-nav .menu-item:focus-within > .sub-menu,
  .main-nav .page_item_has_children:hover > ul.children,
  .main-nav .page_item_has_children:focus-within > ul.children {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav .sub-menu .menu-item,
  .main-nav ul.children .page_item {
    width: 100%;
  }

  .main-nav .sub-menu a,
  .main-nav ul.children a {
    display: block;
    padding: 0.5rem 1rem;
    white-space: nowrap;
  }

  .main-nav .sub-menu .menu-item:hover > a,
  .main-nav .sub-menu .menu-item:focus-within > a,
  .main-nav .sub-menu .current-menu-item > a,
  .main-nav ul.children .page_item:hover > a,
  .main-nav ul.children .page_item:focus-within > a,
  .main-nav ul.children .current_page_item > a {
    background: var(--color-bg-alt);
    color: var(--color-accent);
  }

  .main-nav .sub-menu .menu-item-has-children,
  .main-nav ul.children .page_item_has_children {
    position: relative;
  }

  .main-nav .sub-menu .sub-menu,
  .main-nav ul.children ul.children {
    top: 0;
    left: calc(100% + 4px);
    margin-top: -0.5rem;
  }
}

/* Mobile: sub-menu accordion (toggle injected by script.js) */
@media (max-width: 768px) {
  .main-nav .menu-item-has-children,
  .main-nav .page_item_has_children {
    position: relative;
  }

  .main-nav .menu-item-has-children > a,
  .main-nav .page_item_has_children > a {
    padding-right: 3.25rem;
  }

  .main-nav .submenu-toggle {
    position: absolute;
    top: 0.125rem;
    right: 0;
    width: 2.75rem;
    min-width: 2.75rem;
    height: 2.75rem;
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.65rem;
    line-height: 1;
    padding: 0;
    transition: background var(--transition), transform var(--transition);
  }

  .main-nav .submenu-toggle:hover {
    background: var(--color-border-light);
  }

  .main-nav .menu-item-has-children.is-open > .submenu-toggle,
  .main-nav .page_item_has_children.is-open > .submenu-toggle {
    transform: rotate(180deg);
  }

  .main-nav .sub-menu,
  .main-nav ul.children {
    display: none;
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0.25rem 0 0.5rem 0.75rem;
    margin: 0;
    list-style: none;
    background: transparent;
    min-width: 0;
  }

  .main-nav .menu-item-has-children.is-open > .sub-menu,
  .main-nav .page_item_has_children.is-open > ul.children {
    display: block;
  }

  .main-nav .sub-menu a,
  .main-nav ul.children a {
    padding: 0.45rem 0.875rem;
    font-size: var(--font-size-sm);
  }

  .main-nav .sub-menu .sub-menu,
  .main-nav ul.children ul.children {
    padding-left: 0.75rem;
  }
}

.nav-search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  margin-left: 0.5rem;
}

.nav-search-toggle:hover {
  background: var(--color-bg-alt);
}

.nav-search-toggle svg {
  width: 18px;
  height: 18px;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: var(--color-bg-alt);
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ==========================================================================
   Hero / Page Header
   ========================================================================== */

.page-hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.page-hero h1 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-snug);
}

.archive-hero {
  padding: 3rem 0 2rem;
}

.archive-hero h1 {
  font-size: var(--font-size-3xl);
}

/* ==========================================================================
   Post Cards / Grid
   ========================================================================== */

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  padding-bottom: 4rem;
}

.post-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

@media (hover: hover) and (pointer: fine) {
  .post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-card-shadow-hover);
  }
}

.post-card__thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-card__thumbnail-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-border-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.post-card__thumbnail-placeholder svg {
  width: 48px;
  height: 48px;
  color: var(--color-text-tertiary);
}

.post-card__body {
  padding: 1.5rem;
}

.post-card__category {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.625rem;
}

.post-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: var(--line-height-snug);
  margin-bottom: 0.625rem;
  letter-spacing: -0.01em;
}

.post-card__title a {
  color: var(--color-text);
  transition: color var(--transition);
}

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

.post-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: 500;
}

.post-card__meta svg {
  width: 14px;
  height: 14px;
  margin-right: 0.25rem;
  vertical-align: -2px;
}

/* ==========================================================================
   Single Post / Article
   ========================================================================== */

.article-header {
  padding: 4rem 0 2.5rem;
  text-align: center;
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.article-header__category {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 1rem;
  background: rgba(0, 113, 227, 0.08);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

.article-header h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.article-meta__divider {
  width: 3px;
  height: 3px;
  background: var(--color-text-tertiary);
  border-radius: 50%;
}

.article-featured-image {
  max-width: var(--max-width-narrow);
  margin: 0 auto 2rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  text-align: center;
  background: var(--color-bg-alt);
}

.article-featured-image img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: min(52vh, 480px);
  margin-left: auto;
  margin-right: auto;
  object-fit: contain;
}

.article-content {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding-bottom: 4rem;
}

.article-content h2 {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-light);
}

.article-content h3 {
  margin-top: 2.5rem;
}

.article-content h4,
.article-content h5,
.article-content h6 {
  margin-top: 2rem;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 0;
}

.article-content li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

.article-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: rgba(0, 113, 227, 0.3);
  transition: text-decoration-color var(--transition);
}

.article-content a:hover {
  text-decoration-color: var(--color-accent);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 2rem auto;
}

.article-content .wp-block-image,
.article-content figure {
  max-width: 100%;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: var(--font-size-sm);
}

.article-content table th {
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  background: var(--color-bg-alt);
  border-bottom: 2px solid var(--color-border);
}

.article-content table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border-light);
}

.article-content table tr:last-child td {
  border-bottom: none;
}

/* Article Footer */
.article-footer {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 2rem 0 4rem;
  border-top: 1px solid var(--color-border-light);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.article-tags a {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border-radius: 100px;
  border: 1px solid var(--color-border-light);
  transition: background var(--transition), color var(--transition);
}

.article-tags a:hover {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.post-navigation__link {
  display: block;
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.post-navigation__link:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px var(--color-card-shadow);
}

.post-navigation__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  margin-bottom: 0.375rem;
}

.post-navigation__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-snug);
}

.post-navigation__link--next {
  text-align: right;
}

/* ==========================================================================
   Comments
   ========================================================================== */

.comments-area {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.comments-title {
  font-size: var(--font-size-2xl);
  margin-bottom: 2rem;
}

.comment-list {
  list-style: none;
  padding: 0;
}

.comment-list li {
  list-style: none;
}

.comment {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

.comment-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.625rem;
}

.comment-author img {
  border-radius: 50%;
  width: 40px;
  height: 40px;
}

.comment-author .fn {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.comment-metadata {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: 0.75rem;
}

.comment-metadata a {
  color: var(--color-text-tertiary);
}

.comment-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.comment-content p:last-child {
  margin-bottom: 0;
}

.comment-reply-link {
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.children {
  padding-left: 2rem;
  list-style: none;
}

/* Comment Form */
.comment-respond {
  margin-top: 2.5rem;
  padding: 2rem;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.comment-reply-title {
  font-size: var(--font-size-xl);
  margin-bottom: 1.5rem;
}

.comment-form label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  margin-bottom: 1rem;
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

.comment-form textarea {
  min-height: 150px;
  resize: vertical;
}

.comment-form .submit {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-accent);
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.comment-form .submit:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.375rem;
  padding: 2rem 0 4rem;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.pagination .page-numbers:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pagination .page-numbers.current {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.pagination .prev,
.pagination .next {
  font-weight: 600;
  padding: 0 1rem;
}

/* ==========================================================================
   Search
   ========================================================================== */

.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}

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

.search-overlay__inner {
  width: 100%;
  max-width: 580px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  padding: 0.5rem;
  margin: 0 1rem;
}

.search-overlay__form {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
}

.search-overlay__form svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

.search-overlay__input {
  flex: 1;
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: var(--font-size-lg);
  color: var(--color-text);
  outline: none;
}

.search-overlay__input::placeholder {
  color: var(--color-text-tertiary);
}

.search-overlay__close {
  padding: 0.25rem 0.5rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-tertiary);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  cursor: pointer;
  flex-shrink: 0;
}

.search-results-info {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Inline search form (search page, 404) */
.inline-search-form {
  display: flex;
  max-width: 480px;
  margin: 0 auto;
}

.inline-search-form input[type="search"] {
  flex: 1;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
}

.inline-search-form input[type="search"]:focus {
  border-color: var(--color-accent);
}

.inline-search-form button {
  padding: 0.875rem 1.5rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-accent);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  transition: background var(--transition);
}

.inline-search-form button:hover {
  background: var(--color-accent-hover);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  padding: 3rem 0;
}

.site-footer__widgets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem 2.5rem;
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 2rem;
}

.site-footer__widgets .widget:last-child {
  margin-bottom: 0;
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.site-footer__links {
  display: flex;
  gap: 1.5rem;
}

.site-footer__links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.site-footer__links a:hover {
  color: var(--color-text);
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.error-404 {
  text-align: center;
  padding: 6rem 0;
}

.error-404__code {
  font-size: 8rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-404 h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: 1rem;
}

.error-404 p {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Widget / Sidebar Styles (if used)
   ========================================================================== */

.widget {
  margin-bottom: 2rem;
}

.widget-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.screen-reader-text {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  word-wrap: normal;
}

.text-center { text-align: center; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --font-size-3xl: 1.625rem;
    --nav-height: 118px;
  }

  html {
    -webkit-text-size-adjust: 100%;
  }

  .container {
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.25rem, env(safe-area-inset-right, 0px));
  }

  /* Mobile nav */
  .nav-toggle {
    display: flex;
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
  }

  .nav-search-toggle {
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(env(safe-area-inset-top, 0px) + var(--nav-height));
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0.75rem max(1.25rem, env(safe-area-inset-left, 0px)) 1rem max(1.25rem, env(safe-area-inset-right, 0px));
    gap: 0.125rem;
    max-height: min(70vh, calc(100dvh - env(safe-area-inset-top, 0px) - var(--nav-height) - 1rem));
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav.active {
    display: flex;
  }

  .main-nav.active > ul.packetnotes-menu {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0.125rem;
  }

  .main-nav.active > ul.packetnotes-menu > li {
    width: 100%;
  }

  .main-nav a {
    display: block;
    padding: 0.75rem 0.875rem;
  }

  .site-branding__logo img {
    max-height: min(72px, 20vw);
    max-width: min(320px, 68vw);
  }

  .site-branding {
    max-width: calc(100% - 9.5rem);
  }

  .site-branding__subtitle {
    display: none;
  }

  .nav-search-toggle {
    margin-left: auto;
    margin-right: 0.25rem;
  }

  /* Grid */
  .post-grid {
    grid-template-columns: 1fr;
  }

  /* Article */
  .article-header h1 {
    font-size: var(--font-size-3xl);
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
  }

  /* Post nav */
  .post-navigation {
    grid-template-columns: 1fr;
  }

  /* Hero */
  .page-hero {
    padding: 3rem 0 2rem;
  }

  .page-hero h1 {
    font-size: var(--font-size-4xl);
  }

  /* Footer */
  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .site-footer {
    padding-bottom: calc(3rem + env(safe-area-inset-bottom, 0px));
  }

  .article-header {
    padding: 2rem 0 1.5rem;
  }

  .article-featured-image img {
    max-height: min(40vh, 360px);
  }

  .article-content {
    padding-bottom: 3rem;
  }

  .article-content h2 {
    margin-top: 2rem;
    padding-top: 1.25rem;
  }

  .article-content h3 {
    margin-top: 1.75rem;
  }

  .article-content .wp-block-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }

  .article-content table {
    font-size: var(--font-size-xs);
  }

  .article-content table th,
  .article-content table td {
    padding: 0.5rem 0.65rem;
    word-break: break-word;
  }

  pre {
    padding: 1rem;
    font-size: 0.8125rem;
    margin: 1.5rem 0;
    -webkit-overflow-scrolling: touch;
  }

  .search-overlay {
    padding: max(8vh, env(safe-area-inset-top, 0px)) max(1rem, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(1rem, env(safe-area-inset-left, 0px));
    align-items: flex-start;
  }

  .search-overlay__inner {
    margin: 0;
    width: 100%;
    max-width: none;
  }

  .search-overlay__input {
    font-size: 1rem;
  }

  .search-overlay__close {
    min-height: 44px;
    padding: 0 0.75rem;
    font-size: var(--font-size-sm);
  }

  .pagination {
    flex-wrap: wrap;
    row-gap: 0.5rem;
    justify-content: center;
  }

  .pagination .page-numbers {
    min-width: 44px;
    min-height: 44px;
    height: auto;
  }

  .post-navigation__link {
    padding: 1.125rem;
  }

  .comment-form .submit {
    min-height: 44px;
    padding: 0.75rem 1.5rem;
    width: 100%;
  }

  .comment-respond {
    padding: 1.25rem;
  }

  blockquote {
    padding: 0.875rem 1rem;
    margin: 1.5rem 0;
  }

  .post-card__title {
    font-size: var(--font-size-lg);
  }

  .inline-search-form {
    flex-direction: column;
    gap: 0.75rem;
    max-width: 100%;
    padding: 0 max(0px, env(safe-area-inset-left, 0px)) 0 max(0px, env(safe-area-inset-right, 0px));
  }

  .inline-search-form input[type="search"] {
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-size: 1rem;
  }

  .inline-search-form button {
    border-radius: var(--radius-sm);
    width: 100%;
    min-height: 44px;
  }

  .nav-toggle,
  .nav-search-toggle,
  .main-nav .submenu-toggle,
  .search-overlay__close,
  button {
    -webkit-tap-highlight-color: rgba(0, 113, 227, 0.12);
  }

  /* Comments */
  .children {
    padding-left: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-5xl: 2rem;
    --font-size-2xl: 1.35rem;
  }

  .container {
    padding-left: max(1rem, env(safe-area-inset-left, 0px));
    padding-right: max(1rem, env(safe-area-inset-right, 0px));
  }

  .post-grid {
    gap: 1rem;
    padding-bottom: 3rem;
  }

  .post-card__body {
    padding: 1.125rem;
  }

  .archive-hero {
    padding: 2rem 0 1.25rem;
  }

  .archive-hero h1 {
    font-size: var(--font-size-2xl);
  }

  .page-hero {
    padding: 2rem 0 1.5rem;
  }

  .comments-area {
    padding: 2rem 0 3rem;
  }

  .comments-title {
    font-size: var(--font-size-xl);
  }

  .error-404__code {
    font-size: 5rem;
  }
}