/*
Theme Name: Space Delta
Description: Next-generation WordPress theme for space technology media. Vivid gradient design with a light, modern aesthetic.
Version: 3.0.0
Author: Space Delta Team
Text Domain: space-delta
*/

/* ============================================================
   Design Tokens
   ============================================================ */
:root {
  --color-deep:   #1A1A2E;
  --color-dark:   #16213E;

  --bg:           #FAFAFA;
  --bg-surface:   #FFFFFF;

  --text:         #111827;
  --text-secondary: #4B5563;
  --text-muted:   #9CA3AF;

  --border:       rgba(0,0,0,0.08);
  --border-hover: rgba(124,58,237,0.3);

  --gradient-primary: linear-gradient(135deg, #2563EB, #7C3AED, #EC4899);
  --gradient-subtle:  linear-gradient(135deg, #EEF2FF, #F5F3FF, #FDF2F8);
  --gradient-bar:     linear-gradient(90deg, #2563EB, #7C3AED, #EC4899);

  --accent-blue:   #2563EB;
  --accent-violet: #7C3AED;
  --accent-pink:   #EC4899;

  /* Category colors */
  --cat-rocket:    #EF4444;
  --cat-satellite: #3B82F6;
  --cat-explore:   #10B981;
  --cat-orbital:   #8B5CF6;
  --cat-propul:    #F59E0B;
  --cat-industry:  #06B6D4;
  --cat-news:      #6366F1;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 40px rgba(124,58,237,0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* ============================================================
   Layout
   ============================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

main {
  min-height: calc(100vh - 340px);
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

/* Top gradient bar */
.site-header::before {
  content: '';
  display: block;
  height: 4px;
  background: var(--gradient-bar);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo::before {
  content: '\25B3';
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.2em;
  font-weight: 900;
}

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

.site-description {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0;
  display: none;
}

/* Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  gap: 0;
  margin: 0;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  display: block;
  padding: 0 16px;
  height: 64px;
  line-height: 64px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav li.current-menu-item > a {
  color: var(--accent-violet);
  border-bottom-color: var(--accent-violet);
  text-decoration: none;
}

/* Hamburger */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  width: 38px;
  height: 38px;
  gap: 5px;
}

.hamburger {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: 0.3s;
  transform-origin: center;
}

/* ============================================================
   Hero (Homepage)
   ============================================================ */
.site-hero {
  background: var(--bg-surface);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(124,58,237,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(236,72,153,0.06) 0%, transparent 50%);
  color: var(--text);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.site-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-violet);
  margin-bottom: 16px;
  background: var(--gradient-subtle);
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid rgba(124,58,237,0.15);
}

.hero-label::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 12px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

/* ============================================================
   Category Filter Bar
   ============================================================ */
.category-bar {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 68px;
  z-index: 900;
}

.category-bar-inner {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-bar-inner::-webkit-scrollbar {
  display: none;
}

.cat-filter-link {
  flex-shrink: 0;
  display: block;
  padding: 12px 16px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.cat-filter-link:hover,
.cat-filter-link.active {
  color: var(--accent-violet);
  border-bottom-color: var(--accent-violet);
  text-decoration: none;
}

/* ============================================================
   Posts Grid
   ============================================================ */
.posts-section {
  padding: 40px 0 64px;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-count {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   Post Card
   ============================================================ */
.post-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.post-thumbnail-wrapper {
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--gradient-subtle);
}

.post-thumbnail-wrapper a {
  display: block;
  height: 100%;
}

.post-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .post-thumbnail {
  transform: scale(1.04);
}

.post-card .post-content {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Category badge */
.cat-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  background: var(--accent-violet);
  transition: opacity var(--transition);
}

.cat-badge:hover {
  opacity: 0.85;
  color: #fff;
  text-decoration: none;
}

/* Per-category colors */
.cat-badge[data-cat="ロケット技術"]  { background: var(--cat-rocket); }
.cat-badge[data-cat="衛星技術"]      { background: var(--cat-satellite); }
.cat-badge[data-cat="宇宙探査"]      { background: var(--cat-explore); }
.cat-badge[data-cat="軌道力学"]      { background: var(--cat-orbital); }
.cat-badge[data-cat="推進システム"]   { background: var(--cat-propul); }
.cat-badge[data-cat="宇宙産業"]      { background: var(--cat-industry); }
.cat-badge[data-cat="ニュース"]      { background: var(--cat-news); }

.post-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.post-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin: 0;
}

.post-title a {
  color: inherit;
  text-decoration: none;
}

.post-title a:hover {
  color: var(--accent-violet);
  text-decoration: none;
}

.post-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-violet);
  text-decoration: none;
  margin-top: 4px;
  transition: gap var(--transition), color var(--transition);
}

.read-more::after {
  content: '\2192';
  font-size: 0.875em;
}

.read-more:hover {
  gap: 8px;
  text-decoration: none;
  color: var(--accent-pink);
}

/* ============================================================
   Pagination
   ============================================================ */
.pagination-nav {
  margin-top: 48px;
  text-align: center;
}

.pagination-nav .nav-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.pagination-nav a,
.pagination-nav .current,
.pagination-nav .dots {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
  background: var(--bg-surface);
}

.pagination-nav a:hover {
  border-color: var(--accent-violet);
  color: var(--accent-violet);
  text-decoration: none;
}

.pagination-nav .current {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
  font-weight: 700;
}

/* ============================================================
   Single Post
   ============================================================ */
.single-wrap {
  padding: 48px 0 80px;
}

.single-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.breadcrumb-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

/* Article */
.single-post-article {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-header {
  padding: 36px 40px 28px;
  border-bottom: 1px solid var(--border);
}

.article-meta-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.article-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.entry-title {
  font-size: 1.875rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0;
}

/* Featured image */
.featured-image {
  margin: 0;
  border-bottom: 1px solid var(--border);
}

.featured-image img {
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: cover;
}

/* Entry content */
.entry-content {
  padding: 36px 40px;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text);
}

.entry-content p {
  margin-bottom: 1.5em;
}

.entry-content h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 2.5em 0 0.75em;
  padding-left: 16px;
  border-left: 4px solid transparent;
  border-image: var(--gradient-primary) 1;
  color: var(--text);
}

.entry-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 2em 0 0.5em;
  color: var(--text);
  padding: 8px 14px;
  background: var(--gradient-subtle);
  border-radius: var(--radius-sm);
}

.entry-content h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.5em 0 0.5em;
  color: var(--text);
}

.entry-content ul,
.entry-content ol {
  margin: 0 0 1.5em 1.5em;
}

.entry-content li {
  margin-bottom: 0.4em;
}

.entry-content blockquote,
.entry-content .wp-block-quote {
  margin: 2em 0;
  padding: 20px 24px;
  background: var(--gradient-subtle);
  border-left: 4px solid transparent;
  border-image: var(--gradient-primary) 1;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: normal;
  color: var(--text-secondary);
}

.entry-content blockquote p,
.entry-content .wp-block-quote p {
  margin-bottom: 0.5em;
}

.entry-content blockquote p:last-child,
.entry-content .wp-block-quote p:last-child {
  margin-bottom: 0;
}

.entry-content pre,
.entry-content .wp-block-code {
  background: #0F172A;
  color: #E2E8F0;
  padding: 24px 28px;
  border-radius: var(--radius-lg);
  font-family: 'Monaco', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-x: auto;
  margin: 1.5em 0;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9375rem;
}

.entry-content th {
  background: var(--color-deep);
  color: #fff;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
}

.entry-content td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.entry-content tr:nth-child(even) td {
  background: rgba(0,0,0,0.02);
}

.entry-content img {
  border-radius: var(--radius-md);
  margin: 1.5em auto;
  box-shadow: var(--shadow-sm);
}

.entry-content a {
  color: var(--accent-violet);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.entry-content a:hover {
  color: var(--accent-pink);
}

.entry-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

/* Article footer */
.article-footer {
  padding: 24px 40px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.02);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.tags-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 4px;
}

.tag-chip {
  display: inline-block;
  padding: 3px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
}

.tag-chip:hover {
  background: var(--gradient-subtle);
  border-color: var(--border-hover);
  color: var(--accent-violet);
  text-decoration: none;
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.sidebar-widget-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: var(--gradient-primary);
  padding: 10px 16px;
  margin: 0;
}

.sidebar-widget-body {
  padding: 16px;
}

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

.sidebar-cat-list li {
  border-bottom: 1px solid var(--border);
}

.sidebar-cat-list li:last-child {
  border-bottom: none;
}

.sidebar-cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.sidebar-cat-list a:hover {
  color: var(--accent-violet);
  text-decoration: none;
}

.sidebar-cat-list .count {
  font-size: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 1px 7px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   Post Navigation
   ============================================================ */
.post-navigation {
  margin-top: 24px;
}

.nav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.nav-previous,
.nav-next {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  transition: all var(--transition);
}

.nav-previous:hover,
.nav-next:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.nav-next {
  text-align: right;
}

.nav-previous a,
.nav-next a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.nav-subtitle {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-violet);
  margin-bottom: 6px;
}

.nav-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

/* ============================================================
   No Posts
   ============================================================ */
.no-posts {
  text-align: center;
  padding: 64px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.no-posts h2 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.no-posts p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ============================================================
   Search
   ============================================================ */
.archive-header {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.archive-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.archive-description {
  color: var(--text-muted);
}

.search-form {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  max-width: 480px;
}

.search-field {
  flex: 1;
  padding: 10px 14px;
  border: none;
  font-size: 0.9375rem;
  background: transparent;
  color: var(--text);
  outline: none;
}

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

.search-submit {
  padding: 10px 18px;
  background: var(--gradient-primary);
  border: none;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition);
}

.search-submit:hover {
  opacity: 0.9;
}

input[type="search"],
input[type="text"],
input[type="email"],
textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  background: var(--bg-surface);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

input:focus,
textarea:focus {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.1);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-deep);
  color: rgba(255,255,255,0.7);
  margin-top: 0;
}

.footer-top {
  padding: 48px 0 36px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
  margin-bottom: 12px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand-name::before {
  content: '\25B3';
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
  max-width: 280px;
}

.footer-nav-title {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 12px;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav-list a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav-list a:hover {
  color: #fff;
  text-decoration: none;
}

.footer-bottom {
  padding: 16px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
}

.footer-copyright a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
}

.footer-copyright a:hover {
  color: rgba(255,255,255,0.8);
}

.footer-menu ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-menu a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-menu a:hover {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
}

/* ============================================================
   Utilities
   ============================================================ */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

/* WP Blocks */
.wp-block-separator {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

.wp-block-list {
  margin: 0 0 1.5em 1.5em;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .single-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav ul {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 8px;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }

  .main-nav.toggled ul {
    display: flex;
  }

  .main-nav {
    position: relative;
  }

  .main-nav a {
    height: auto;
    line-height: 1.5;
    padding: 10px 12px;
    border-bottom: none;
    border-radius: var(--radius-sm);
  }

  .main-nav a:hover {
    background: var(--gradient-subtle);
    border-bottom-color: transparent;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .posts-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .article-header,
  .entry-content,
  .article-footer {
    padding: 24px 20px;
  }

  .entry-title {
    font-size: 1.5rem;
  }

  .entry-content h2 {
    font-size: 1.25rem;
  }

  .nav-links {
    grid-template-columns: 1fr;
  }

  .nav-next {
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .category-bar {
    top: 68px;
  }

  .single-wrap {
    padding: 24px 0 48px;
  }
}