/*
Theme Name: NASA Blog
Theme URI: https://example.com/nasablog-starter
Author: Custom
Author URI: https://example.com
Description: Space exploration and science blog theme with NASA-inspired design. Dark theme with blue accents for scientific content.
Version: 1.0.2
Tested up to: 6.4
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: nasablog
Tags: blog, news, science, dark-theme, custom-logo, custom-menu, featured-images, translation-ready
*/

:root {
    --nasa-primary: #0b3d91;
    --nasa-secondary: #fc3d21;
    --nasa-accent: #00a3e0;
    --nasa-dark: #0a0a0a;
    --nasa-darker: #050505;
    --nasa-light: #ffffff;
    --nasa-gray: #a0a0a0;
    --nasa-gray-dark: #2a2a2a;
    --nasa-font-heading: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --nasa-font-body: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --nasa-container: 1200px;
    --nasa-gap: 24px;
    --nasa-radius: 4px;
    --nasa-transition: 0.2s ease;
}

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

body {
    margin: 0;
    font-family: var(--nasa-font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--nasa-light);
    background-color: var(--nasa-dark);
    -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--nasa-font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 0.5em;
    color: var(--nasa-light);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p { margin: 0 0 1.5em; }

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

.screen-reader-text:focus {
    background-color: var(--nasa-dark);
    clip: auto !important;
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
    color: var(--nasa-light);
}

.nasa-container {
    max-width: var(--nasa-container);
    margin: 0 auto;
    padding: 0 var(--nasa-gap);
}

/* Header */
.nasa-header {
    background: linear-gradient(180deg, var(--nasa-darker) 0%, var(--nasa-dark) 100%);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--nasa-gray-dark);
}

.nasa-header-top {
    background: var(--nasa-primary);
    padding: 8px 0;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nasa-header-top-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nasa-header-date { color: rgba(255,255,255,0.8); }

.nasa-header-main {
    padding: 16px 0;
}

.nasa-header-main-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--nasa-gap);
}

.nasa-logo a {
    font-family: var(--nasa-font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--nasa-light);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nasa-logo img { max-height: 50px; width: auto; }

.nasa-nav { flex: 1; display: flex; justify-content: center; }

.nasa-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 32px;
}

.nasa-nav-menu li { position: relative; }

.nasa-nav-menu a {
    color: var(--nasa-light);
    font-family: var(--nasa-font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 8px 0;
    display: block;
    position: relative;
}

.nasa-nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--nasa-secondary);
    transition: width var(--nasa-transition);
}

.nasa-nav-menu a:hover { color: var(--nasa-accent); }
.nasa-nav-menu a:hover::after { width: 100%; }

.nasa-nav-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--nasa-gray-dark);
    min-width: 200px;
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--nasa-transition);
    border-radius: var(--nasa-radius);
    z-index: 100;
}

.nasa-nav-menu li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nasa-nav-menu .sub-menu a {
    padding: 8px 20px;
    font-size: 0.8rem;
}

.nasa-nav-menu .sub-menu a::after { display: none; }

.nasa-header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nasa-search-toggle {
    background: none;
    border: none;
    color: var(--nasa-light);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--nasa-transition);
}

.nasa-search-toggle:hover { color: var(--nasa-accent); }

.nasa-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}

.nasa-menu-toggle-bar {
    width: 24px;
    height: 2px;
    background: var(--nasa-light);
    transition: all var(--nasa-transition);
}

/* Search Overlay */
.nasa-search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.95);
    padding: 100px var(--nasa-gap);
    opacity: 0;
    visibility: hidden;
    transition: all var(--nasa-transition);
    z-index: 2000;
}

.nasa-search-overlay.nasa-search-open {
    opacity: 1;
    visibility: visible;
}

.nasa-search-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
}

.nasa-search-input {
    flex: 1;
    padding: 16px 20px;
    border: 2px solid var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    font-size: 1.125rem;
    background: var(--nasa-gray-dark);
    color: var(--nasa-light);
    font-family: inherit;
}

.nasa-search-input:focus {
    outline: none;
    border-color: var(--nasa-accent);
}

.nasa-search-submit {
    padding: 16px 32px;
    background: var(--nasa-primary);
    color: var(--nasa-light);
    border: none;
    border-radius: var(--nasa-radius);
    font-family: var(--nasa-font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background var(--nasa-transition);
}

.nasa-search-submit:hover { background: var(--nasa-accent); }

.nasa-search-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--nasa-light);
    font-size: 2rem;
    cursor: pointer;
    padding: 8px;
    line-height: 1;
}

/* Main */
.nasa-main {
    min-height: calc(100vh - 200px);
    padding: 48px 0;
}

/* Layout */
.nasa-layout {
    display: grid;
    gap: var(--nasa-gap);
}

.nasa-layout.right-sidebar { grid-template-columns: 1fr 320px; }
.nasa-layout.left-sidebar { grid-template-columns: 320px 1fr; }
.nasa-layout.left-sidebar .nasa-sidebar { order: -1; }
.nasa-layout.no-sidebar { grid-template-columns: 1fr; }
.nasa-layout.no-sidebar .nasa-sidebar { display: none; }

/* Breadcrumbs */
.nasa-breadcrumbs {
    margin-bottom: 32px;
    padding: 16px 20px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    border-left: 3px solid var(--nasa-primary);
}

.nasa-breadcrumbs-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nasa-breadcrumbs-list li { display: flex; align-items: center; gap: 8px; }
.nasa-breadcrumbs-list li:not(:last-child)::after { content: '›'; color: var(--nasa-gray); }
.nasa-breadcrumbs-list a { color: var(--nasa-gray); }
.nasa-breadcrumbs-list a:hover { color: var(--nasa-accent); }
.nasa-breadcrumbs-list li:last-child { color: var(--nasa-accent); }

/* Featured Section */
.nasa-featured-section {
    margin-bottom: 48px;
}

.nasa-featured-article {
    position: relative;
    border-radius: var(--nasa-radius);
    overflow: hidden;
    background: var(--nasa-gray-dark);
    min-height: 300px;
}

.nasa-featured-thumb {
    display: block;
    aspect-ratio: 21/9;
    overflow: hidden;
}

.nasa-featured-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.nasa-featured-article:hover .nasa-featured-thumb img { transform: scale(1.05); }

/* Контент внутри featured - относительное позиционирование для случая без изображения */
.nasa-featured-article:not(:has(.nasa-featured-thumb)) .nasa-featured-content {
    position: relative;
    background: transparent;
}

.nasa-featured-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 48px;
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
}

.nasa-featured-category {
    display: inline-block;
    padding: 6px 12px;
    background: var(--nasa-secondary);
    color: var(--nasa-light);
    font-family: var(--nasa-font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--nasa-radius);
    margin-bottom: 16px;
}

.nasa-featured-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
    max-width: 800px;
}

.nasa-featured-title a { color: var(--nasa-light); }
.nasa-featured-title a:hover { color: var(--nasa-accent); }

.nasa-featured-excerpt {
    color: var(--nasa-gray);
    font-size: 1.125rem;
    max-width: 600px;
    margin-bottom: 16px;
}

.nasa-featured-meta {
    display: flex;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--nasa-gray);
}

/* Article Cards */
.nasa-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--nasa-gap);
}

.nasa-article-card {
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    overflow: hidden;
    transition: transform var(--nasa-transition), box-shadow var(--nasa-transition);
    border: 1px solid transparent;
}

.nasa-article-card:hover {
    transform: translateY(-4px);
    border-color: var(--nasa-primary);
    box-shadow: 0 8px 32px rgba(0,163,224,0.15);
}

.nasa-article-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    position: relative;
}

.nasa-article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--nasa-transition);
}

.nasa-article-card:hover .nasa-article-thumb img { transform: scale(1.05); }

.nasa-article-category {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    background: var(--nasa-primary);
    color: var(--nasa-light);
    font-family: var(--nasa-font-heading);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--nasa-radius);
}

.nasa-article-body { padding: 20px; }

.nasa-sticky-badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--nasa-secondary);
    color: var(--nasa-light);
    font-family: var(--nasa-font-heading);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--nasa-radius);
    margin-bottom: 12px;
}

.nasa-article-meta {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
    color: var(--nasa-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.nasa-article-title {
    font-size: 1.125rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.nasa-article-title a { color: var(--nasa-light); }
.nasa-article-title a:hover { color: var(--nasa-accent); }

.nasa-article-excerpt {
    font-size: 0.9rem;
    color: var(--nasa-gray);
    line-height: 1.6;
}

/* Single Article */
.nasa-single-article {
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    overflow: hidden;
}

.nasa-single-header {
    padding: 40px;
    text-align: center;
    background: linear-gradient(135deg, var(--nasa-primary) 0%, var(--nasa-darker) 100%);
}

.nasa-single-categories {
    margin-bottom: 20px;
}

.nasa-single-category {
    display: inline-block;
    padding: 6px 14px;
    background: var(--nasa-secondary);
    color: var(--nasa-light);
    font-family: var(--nasa-font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--nasa-radius);
    margin: 0 4px;
}

.nasa-single-title {
    font-size: 2.5rem;
    max-width: 800px;
    margin: 0 auto 24px;
}

.nasa-single-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.7);
}

.nasa-single-meta a { color: var(--nasa-accent); }

.nasa-share {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.nasa-share-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--nasa-gray);
}

.nasa-share-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--nasa-gray-dark);
    color: var(--nasa-light);
    transition: all var(--nasa-transition);
}

.nasa-share-link:hover {
    background: var(--nasa-accent);
    transform: translateY(-2px);
}

.nasa-single-thumbnail {
    margin: 0;
}

.nasa-single-thumbnail img { width: 100%; }

.nasa-single-thumbnail figcaption {
    padding: 12px 40px;
    font-size: 0.875rem;
    color: var(--nasa-gray);
    text-align: center;
    font-style: italic;
}

.nasa-single-content {
    padding: 40px;
    font-size: 1.125rem;
    line-height: 1.8;
}

.nasa-single-content h2,
.nasa-single-content h3,
.nasa-single-content h4 { margin-top: 2em; }

.nasa-single-content a { text-decoration: underline; }
.nasa-single-content a:hover { color: var(--nasa-secondary); }

.nasa-single-content blockquote {
    margin: 2em 0;
    padding: 24px 32px;
    background: var(--nasa-darker);
    border-left: 4px solid var(--nasa-accent);
    font-style: italic;
    color: var(--nasa-gray);
}

.nasa-single-content pre {
    background: var(--nasa-darker);
    padding: 20px;
    border-radius: var(--nasa-radius);
    overflow-x: auto;
    font-size: 0.875rem;
}

.nasa-single-content code {
    background: var(--nasa-darker);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

.nasa-single-footer {
    padding: 24px 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.nasa-tags { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.nasa-tags-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--nasa-gray); margin-right: 8px; }

.nasa-tag {
    padding: 4px 12px;
    background: var(--nasa-darker);
    border-radius: var(--nasa-radius);
    font-size: 0.8rem;
    color: var(--nasa-gray);
    transition: all var(--nasa-transition);
}

.nasa-tag:hover {
    background: var(--nasa-primary);
    color: var(--nasa-light);
}

.nasa-page-links {
    margin: 2em 0;
    padding: 20px;
    background: var(--nasa-darker);
    border-radius: var(--nasa-radius);
    display: flex;
    gap: 12px;
    align-items: center;
}

.nasa-page-links-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Author Box */
.nasa-author-box {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
}

.nasa-author-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
}

.nasa-author-info { flex: 1; }

.nasa-author-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.nasa-author-name a { color: var(--nasa-light); }
.nasa-author-name a:hover { color: var(--nasa-primary); }

.nasa-author-bio {
    font-size: 0.9375rem;
    color: var(--nasa-gray);
}

/* Post Navigation */
.nasa-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--nasa-gap);
    margin: 40px 0;
}

.nasa-post-nav-prev,
.nasa-post-nav-next {
    padding: 24px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    transition: all var(--nasa-transition);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.nasa-post-nav-prev:hover,
.nasa-post-nav-next:hover {
    background: var(--nasa-primary);
}

.nasa-post-nav-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--nasa-gray);
}

.nasa-post-nav-title {
    font-family: var(--nasa-font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--nasa-light);
}

/* Related Posts */
.nasa-related {
    margin: 48px 0;
    padding: 40px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
}

.nasa-related-title {
    font-size: 1.25rem;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nasa-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--nasa-gap);
}

.nasa-related-item { text-align: center; }

.nasa-related-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: var(--nasa-radius);
    margin-bottom: 12px;
}

.nasa-related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--nasa-transition);
}

.nasa-related-item:hover .nasa-related-thumb img { transform: scale(1.05); }

.nasa-related-item-title {
    font-family: var(--nasa-font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--nasa-light);
}

.nasa-related-item-title:hover { color: var(--nasa-accent); }

/* Page */
.nasa-page-article {
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    overflow: hidden;
}

.nasa-page-header {
    padding: 48px;
    text-align: center;
    background: linear-gradient(135deg, var(--nasa-primary) 0%, var(--nasa-darker) 100%);
}

.nasa-page-title { font-size: 2.5rem; margin: 0; }

.nasa-page-thumbnail { margin: 0; }
.nasa-page-thumbnail img { width: 100%; }

.nasa-page-content {
    padding: 48px;
    font-size: 1.125rem;
    line-height: 1.8;
}

/* Archive */
.nasa-archive-header {
    margin-bottom: 40px;
    padding: 32px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    text-align: center;
}

.nasa-archive-title { margin: 0; }
.nasa-archive-description { color: var(--nasa-gray); margin: 12px 0 0; }

/* Search */
.nasa-search-header {
    margin-bottom: 40px;
    padding: 32px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
    text-align: center;
}

.nasa-search-title { margin: 0 0 8px; }
.nasa-search-title span { color: var(--nasa-accent); }
.nasa-search-count { color: var(--nasa-gray); margin: 0; }

.nasa-search-form-inline {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 24px auto 0;
}

/* 404 */
.nasa-404 {
    text-align: center;
    padding: 80px var(--nasa-gap);
}

.nasa-404-title { font-size: 2rem; margin-bottom: 24px; }
.nasa-404-code { font-size: 8rem; font-weight: 700; color: var(--nasa-primary); margin: 0; line-height: 1; }
.nasa-404-message { color: var(--nasa-gray); font-size: 1.125rem; max-width: 500px; margin: 24px auto; }

.nasa-404-home {
    display: inline-block;
    margin-top: 24px;
    padding: 14px 32px;
    background: var(--nasa-primary);
    color: var(--nasa-light);
    border-radius: var(--nasa-radius);
    font-family: var(--nasa-font-heading);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: background var(--nasa-transition);
}

.nasa-404-home:hover { background: var(--nasa-accent); color: var(--nasa-light); }

/* No Posts */
.nasa-no-posts {
    text-align: center;
    padding: 60px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
}

.nasa-no-posts h2 { margin-bottom: 12px; }
.nasa-no-posts p { color: var(--nasa-gray); }

/* Sidebar */
.nasa-sidebar {}

.nasa-widget {
    background: var(--nasa-gray-dark);
    padding: 24px;
    margin-bottom: var(--nasa-gap);
    border-radius: var(--nasa-radius);
}

.nasa-widget-title {
    font-size: 0.9rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--nasa-primary);
}

.nasa-widget ul { list-style: none; margin: 0; padding: 0; }
.nasa-widget li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.nasa-widget li:last-child { border: none; }
.nasa-widget a { color: var(--nasa-gray); }
.nasa-widget a:hover { color: var(--nasa-accent); }

/* Pagination */
.pagination,
.nav-links {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    background: var(--nasa-gray-dark);
    color: var(--nasa-light);
    border-radius: var(--nasa-radius);
    font-family: var(--nasa-font-heading);
    font-weight: 600;
    transition: all var(--nasa-transition);
}

.page-numbers:hover { background: var(--nasa-primary); }
.page-numbers.current { background: var(--nasa-primary); }
.page-numbers.dots { background: transparent; }

/* Comments */
.nasa-comments {
    margin-top: 48px;
    padding: 40px;
    background: var(--nasa-gray-dark);
    border-radius: var(--nasa-radius);
}

.nasa-comments-title {
    font-size: 1.25rem;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nasa-comments-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nasa-comment {
    padding: 24px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nasa-comment:last-child { border: none; }

.nasa-comment-body { display: flex; gap: 16px; }

.nasa-comment-avatar img { border-radius: 50%; }

.nasa-comment-content { flex: 1; }

.nasa-comment-meta {
    margin-bottom: 12px;
    display: flex;
    gap: 12px;
    font-size: 0.875rem;
}

.nasa-comment-author { font-weight: 600; color: var(--nasa-light); }
.nasa-comment-date { color: var(--nasa-gray); }

.nasa-comment-text { font-size: 0.95rem; line-height: 1.6; }
.nasa-comment-text p:last-child { margin-bottom: 0; }

.nasa-comment-awaiting {
    padding: 12px;
    background: rgba(252,61,33,0.1);
    border-radius: var(--nasa-radius);
    font-size: 0.875rem;
    color: var(--nasa-secondary);
}

.nasa-comment-actions {
    margin-top: 12px;
    display: flex;
    gap: 16px;
    font-size: 0.8rem;
}

.nasa-comment-actions a { color: var(--nasa-gray); }
.nasa-comment-actions a:hover { color: var(--nasa-accent); }

.nasa-comments-nav {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    margin-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.nasa-comments-closed {
    text-align: center;
    padding: 24px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--nasa-radius);
    color: var(--nasa-gray);
}

.nasa-comment-form { margin-top: 32px; }

.nasa-comment-form .comment-reply-title { font-size: 1.25rem; margin-bottom: 20px; }

.nasa-comment-form input[type="text"],
.nasa-comment-form input[type="email"],
.nasa-comment-form input[type="url"],
.nasa-comment-form textarea {
    width: 100%;
    padding: 14px 18px;
    margin-bottom: 16px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--nasa-radius);
    background: var(--nasa-darker);
    color: var(--nasa-light);
    font-family: inherit;
    font-size: 1rem;
}

.nasa-comment-form input:focus,
.nasa-comment-form textarea:focus {
    outline: none;
    border-color: var(--nasa-accent);
}

.nasa-comment-submit {
    padding: 14px 32px;
    background: var(--nasa-primary);
    color: var(--nasa-light);
    border: none;
    border-radius: var(--nasa-radius);
    font-family: var(--nasa-font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background var(--nasa-transition);
}

.nasa-comment-submit:hover { background: var(--nasa-accent); }

/* Footer */
.nasa-footer {
    background: var(--nasa-darker);
    border-top: 1px solid var(--nasa-gray-dark);
    margin-top: 48px;
}

.nasa-footer-widgets {
    padding: 60px 0;
}

.nasa-footer-widgets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--nasa-gap);
}

.nasa-footer-widget-area {}

.nasa-footer-widget-title {
    font-size: 0.9rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--nasa-primary);
}

.nasa-footer-widget ul { list-style: none; margin: 0; padding: 0; }
.nasa-footer-widget li { padding: 8px 0; }
.nasa-footer-widget a { color: var(--nasa-gray); }
.nasa-footer-widget a:hover { color: var(--nasa-accent); }

.nasa-footer-nav {
    padding: 24px 0;
    border-top: 1px solid var(--nasa-gray-dark);
    border-bottom: 1px solid var(--nasa-gray-dark);
}

.nasa-footer-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 32px;
}

.nasa-footer-menu a {
    color: var(--nasa-gray);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nasa-footer-menu a:hover { color: var(--nasa-accent); }

.nasa-footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.nasa-copyright {
    font-size: 0.875rem;
    color: var(--nasa-gray);
}

/* Scroll to Top */
.nasa-scroll-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--nasa-primary);
    color: var(--nasa-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--nasa-transition);
    z-index: 999;
}

.nasa-scroll-top:hover { background: var(--nasa-accent); transform: translateY(-2px); }
.nasa-scroll-top.nasa-scroll-top-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
    .nasa-layout.right-sidebar,
    .nasa-layout.left-sidebar { grid-template-columns: 1fr; }
    .nasa-layout.left-sidebar .nasa-sidebar { order: 0; }
    .nasa-footer-widgets-grid { grid-template-columns: repeat(2, 1fr); }
    .nasa-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --nasa-gap: 16px; }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .nasa-menu-toggle { display: flex; }

    .nasa-nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background: var(--nasa-darker);
        padding: 80px var(--nasa-gap) var(--nasa-gap);
        flex-direction: column;
        justify-content: flex-start;
        transition: right var(--nasa-transition);
        z-index: 1500;
    }

    .nasa-nav.nasa-nav-open { right: 0; }

    .nasa-nav-menu {
        flex-direction: column;
        gap: 0;
    }

    .nasa-nav-menu a {
        padding: 16px 0;
        border-bottom: 1px solid var(--nasa-gray-dark);
    }

    .nasa-nav-menu a::after { display: none; }

    .nasa-nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding-left: 16px;
    }

    .nasa-featured-content { padding: 24px; }
    .nasa-featured-title { font-size: 1.5rem; }
    .nasa-featured-excerpt { display: none; }

    .nasa-sidebar { display: none !important; }

    .nasa-articles-grid { grid-template-columns: 1fr; }

    .nasa-single-header { padding: 24px; }
    .nasa-single-title { font-size: 1.75rem; }
    .nasa-single-content { padding: 24px; font-size: 1rem; }

    .nasa-post-nav { grid-template-columns: 1fr; }
    .nasa-post-nav-next { text-align: left; }

    .nasa-related-grid { grid-template-columns: 1fr; }

    .nasa-footer-widgets-grid { grid-template-columns: 1fr; }
    .nasa-footer-menu { flex-direction: column; align-items: center; gap: 16px; }
}

/* Focus States */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--nasa-accent);
    outline-offset: 2px;
}

/* Print */
@media print {
    .nasa-header,
    .nasa-footer,
    .nasa-sidebar,
    .nasa-scroll-top,
    .nasa-share,
    .nasa-related,
    .nasa-post-nav { display: none !important; }

    body {
        background: white;
        color: black;
    }

    .nasa-single-content { padding: 0; }
}

/* Interlinking Section */
.nasa-interlinking {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
}
.nasa-interlinking-title {
    margin: 0 0 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}
.nasa-interlinking-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.nasa-interlinking-list li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}
.nasa-interlinking-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--nasa-color-primary, #333);
}
.nasa-interlinking-list a {
    color: var(--nasa-color-primary, #333);
    text-decoration: none;
}
.nasa-interlinking-list a:hover {
    text-decoration: underline;
}

/* Grid Layouts */
.nasa-grid-3col .nasa-articles-grid,
.nasa-grid-3col .nasa-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.nasa-grid-2col .nasa-articles-grid,
.nasa-grid-2col .nasa-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.nasa-grid-list .nasa-articles-grid,
.nasa-grid-list .nasa-grid {
    display: block;
}
.nasa-grid-list .nasa-article-card {
    margin-bottom: 30px;
}
@media (max-width: 1024px) {
    .nasa-grid-3col .nasa-articles-grid,
    .nasa-grid-3col .nasa-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .nasa-grid-3col .nasa-articles-grid,
    .nasa-grid-3col .nasa-grid,
    .nasa-grid-2col .nasa-articles-grid,
    .nasa-grid-2col .nasa-grid {
        grid-template-columns: 1fr;
    }
}