/*
Theme Name: Aviasales
Theme URI: #
Author: Theme Developer
Author URI: #
Description: Modern travel and aviation blog theme with Aviasales-inspired design. Clean, vibrant layout for travel content.
Version: 1.0.0
Requires at least: 5.0
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: aviasales
Tags: blog, travel, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Colors */
    --avs-color-primary: #ff6600;
    --avs-color-secondary: #2b2d42;
    --avs-color-accent: #00a9e0;
    --avs-color-border: #e5e7eb;
    --avs-color-bg: #ffffff;
    --avs-color-bg-alt: #f9fafb;
    --avs-color-text: #1f2937;
    --avs-color-text-light: #6b7280;
    --avs-color-link: #ff6600;
    --avs-color-link-hover: #00a9e0;

    /* Navigation */
    --avs-color-nav-bg: #2b2d42;
    --avs-color-nav-text: #ffffff;
    --avs-color-nav-hover-bg: #ff6600;
    --avs-color-nav-hover-text: #ffffff;

    /* Footer */
    --avs-color-footer-bg: #2b2d42;
    --avs-color-footer-text: rgba(255,255,255,0.85);
    --avs-color-footer-link: rgba(255,255,255,0.85);
    --avs-color-footer-link-hover: #ff6600;

    /* Typography */
    --avs-font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --avs-font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --avs-font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Sizes */
    --avs-font-size-base: 16px;
    --avs-font-size-heading: 32px;
    --avs-line-height-body: 1.65;
    --avs-line-height-heading: 1.25;
    --avs-letter-spacing-heading: -0.02em;
    --avs-border-radius: 8px;
    --avs-content-spacing: 24px;
    --avs-content-width: 1200px;
    --avs-sidebar-width: 320px;

    /* Spacing */
    --avs-gap: 30px;
    --avs-gap-sm: 16px;
    --avs-gap-lg: 60px;
}

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

html {
    font-size: var(--avs-font-size-base);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--avs-font-body);
    font-size: 1rem;
    line-height: var(--avs-line-height-body);
    color: var(--avs-color-text);
    background-color: var(--avs-color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--avs-font-heading);
    font-weight: 700;
    line-height: var(--avs-line-height-heading);
    letter-spacing: var(--avs-letter-spacing-heading);
    margin: 0 0 0.5em;
    color: var(--avs-color-secondary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin: 0 0 1.5em;
}

a {
    color: var(--avs-color-link);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover,
a:focus {
    color: var(--avs-color-link-hover);
}

a:focus {
    outline: 2px solid var(--avs-color-accent);
    outline-offset: 2px;
}

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

/* ==========================================================================
   Accessibility
   ========================================================================== */
.avs-sr-only {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    word-wrap: normal !important;
}

.avs-skip-link {
    background: var(--avs-color-primary);
    color: #fff;
    padding: 12px 24px;
    position: absolute;
    top: -100px;
    left: 0;
    z-index: 9999;
    transition: top 0.3s;
    font-weight: 600;
    border-radius: 0 0 var(--avs-border-radius) 0;
}

.avs-skip-link:focus {
    top: 0;
    outline: none;
    color: #fff;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.avs-container {
    max-width: var(--avs-content-width);
    margin: 0 auto;
    padding: 0 var(--avs-gap);
}

.avs-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--avs-gap);
}

.avs-main {
    flex: 1;
    min-width: 0;
}

.avs-aside {
    width: var(--avs-sidebar-width);
    flex-shrink: 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.avs-header {
    background: var(--avs-color-bg);
    border-bottom: 1px solid var(--avs-color-border);
    position: relative;
}

.avs-header-top {
    background: linear-gradient(135deg, var(--avs-color-primary) 0%, #ff8533 100%);
    padding: 12px 0;
}

.avs-header-top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    font-size: 0.875rem;
}

.avs-header-main {
    padding: var(--avs-gap) 0;
}

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

.avs-brand {
    display: flex;
    align-items: center;
    gap: var(--avs-gap-sm);
}

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

.avs-site-title {
    font-family: var(--avs-font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.02em;
}

.avs-site-title a {
    color: var(--avs-color-secondary);
    transition: color 0.2s;
}

.avs-site-title a:hover {
    color: var(--avs-color-primary);
}

.avs-site-tagline {
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
    color: var(--avs-color-text-light);
    margin: 4px 0 0;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.avs-nav-primary {
    background: var(--avs-color-nav-bg);
}

.avs-nav-menu {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.avs-nav-menu a {
    display: block;
    padding: 14px 20px;
    color: var(--avs-color-nav-text);
    font-family: var(--avs-font-ui);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
}

.avs-nav-menu a:hover,
.avs-nav-menu a:focus,
.avs-nav-menu .current-menu-item > a {
    background: var(--avs-color-nav-hover-bg);
    color: var(--avs-color-nav-hover-text);
}

/* Mobile menu toggle */
.avs-menu-toggle {
    display: none;
    background: var(--avs-color-nav-bg);
    color: var(--avs-color-nav-text);
    border: none;
    padding: 14px 20px;
    font-family: var(--avs-font-ui);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

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

.avs-menu-toggle-icon {
    float: right;
}

/* ==========================================================================
   Content
   ========================================================================== */
.avs-content {
    padding: var(--avs-gap-lg) 0;
}

/* Single article */
.avs-article {
    margin-bottom: var(--avs-gap-lg);
}

.avs-article-header {
    margin-bottom: var(--avs-gap);
}

.avs-article-title {
    font-size: var(--avs-font-size-heading);
    line-height: var(--avs-line-height-heading);
    margin-bottom: 0.5em;
    color: var(--avs-color-secondary);
}

.avs-article-meta {
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
    color: var(--avs-color-text-light);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.avs-article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.avs-article-meta a {
    color: var(--avs-color-text-light);
}

.avs-article-meta a:hover {
    color: var(--avs-color-primary);
}

.avs-article-excerpt {
    font-size: 1.125rem;
    color: var(--avs-color-text-light);
    border-left: 4px solid var(--avs-color-primary);
    padding-left: var(--avs-gap);
    margin: var(--avs-gap) 0;
    font-style: italic;
}

.avs-article-thumbnail {
    margin: var(--avs-gap) 0;
    border-radius: var(--avs-border-radius);
    overflow: hidden;
}

.avs-article-thumbnail img {
    width: 100%;
    border-radius: var(--avs-border-radius);
}

.avs-article-content {
    font-size: 1.0625rem;
    line-height: 1.75;
}

.avs-article-content h2,
.avs-article-content h3,
.avs-article-content h4 {
    margin-top: 2em;
}

.avs-article-content a {
    border-bottom: 1px solid var(--avs-color-primary);
}

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

.avs-article-footer {
    margin-top: var(--avs-gap);
    padding-top: var(--avs-gap);
    border-top: 1px solid var(--avs-color-border);
}

.avs-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.avs-tags a {
    display: inline-block;
    background: var(--avs-color-bg-alt);
    color: var(--avs-color-text-light);
    padding: 6px 12px;
    border-radius: var(--avs-border-radius);
    font-size: 0.875rem;
    border: none;
}

.avs-tags a:hover {
    background: var(--avs-color-primary);
    color: #fff;
}

/* Breadcrumbs */
.avs-breadcrumbs {
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
    color: var(--avs-color-text-light);
    margin-bottom: var(--avs-gap);
    padding: var(--avs-gap-sm) 0;
    border-bottom: 1px solid var(--avs-color-border);
}

.avs-breadcrumbs a {
    color: var(--avs-color-text-light);
}

.avs-breadcrumbs a:hover {
    color: var(--avs-color-primary);
}

.avs-breadcrumbs-sep {
    margin: 0 10px;
    color: var(--avs-color-border);
}

/* Reading time */
.avs-reading-time {
    background: var(--avs-color-bg-alt);
    padding: 4px 10px;
    border-radius: var(--avs-border-radius);
    font-size: 0.8rem;
}

/* ==========================================================================
   Archive / Cards
   ========================================================================== */
.avs-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--avs-gap);
}

.avs-card {
    background: var(--avs-color-bg);
    border: 1px solid var(--avs-color-border);
    border-radius: var(--avs-border-radius);
    overflow: hidden;
    transition: box-shadow 0.3s, transform 0.3s;
}

.avs-card:hover {
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.avs-card-thumbnail {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

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

.avs-card:hover .avs-card-thumbnail img {
    transform: scale(1.05);
}

.avs-card-content {
    padding: var(--avs-gap);
}

.avs-card-category {
    font-family: var(--avs-font-ui);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-bottom: 10px;
}

.avs-card-category a {
    display: inline-block;
    background: var(--avs-color-primary);
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
}

.avs-card-category a:hover {
    background: var(--avs-color-accent);
    color: #fff;
}

.avs-card-title {
    font-size: 1.25rem;
    line-height: 1.35;
    margin-bottom: 12px;
}

.avs-card-title a {
    color: var(--avs-color-secondary);
}

.avs-card-title a:hover {
    color: var(--avs-color-primary);
}

.avs-card-excerpt {
    font-size: 0.9375rem;
    color: var(--avs-color-text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.avs-card-meta {
    font-family: var(--avs-font-ui);
    font-size: 0.8rem;
    color: var(--avs-color-text-light);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Sticky post badge */
.avs-sticky-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--avs-color-primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 10;
}

/* Featured post (first in list) */
.avs-card-featured {
    grid-column: 1 / -1;
}

.avs-card-featured .avs-card-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 0;
}

.avs-card-featured .avs-card-thumbnail {
    aspect-ratio: auto;
    min-height: 300px;
}

.avs-card-featured .avs-card-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--avs-gap-lg);
}

.avs-card-featured .avs-card-title {
    font-size: 1.75rem;
}

.avs-card-featured .avs-card-excerpt {
    font-size: 1rem;
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.avs-pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: var(--avs-gap-lg);
    font-family: var(--avs-font-ui);
}

.avs-pagination a,
.avs-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--avs-color-border);
    color: var(--avs-color-text);
    border-radius: var(--avs-border-radius);
    font-weight: 500;
    transition: all 0.2s;
}

.avs-pagination a:hover {
    background: var(--avs-color-primary);
    border-color: var(--avs-color-primary);
    color: #fff;
}

.avs-pagination .current {
    background: var(--avs-color-primary);
    border-color: var(--avs-color-primary);
    color: #fff;
}

/* ==========================================================================
   Post Navigation (Prev/Next)
   ========================================================================== */
.avs-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--avs-gap);
    margin-top: var(--avs-gap-lg);
    padding-top: var(--avs-gap);
    border-top: 1px solid var(--avs-color-border);
}

.avs-post-nav-link {
    font-family: var(--avs-font-ui);
}

.avs-post-nav-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--avs-color-text-light);
    margin-bottom: 6px;
}

.avs-post-nav-title {
    font-size: 1rem;
    font-weight: 600;
}

.avs-post-nav-title a {
    color: var(--avs-color-secondary);
}

.avs-post-nav-title a:hover {
    color: var(--avs-color-primary);
}

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

/* ==========================================================================
   Related Posts
   ========================================================================== */
.avs-related {
    margin-top: var(--avs-gap-lg);
    padding-top: var(--avs-gap);
    border-top: 1px solid var(--avs-color-border);
}

.avs-related-title {
    font-size: 1.25rem;
    margin-bottom: var(--avs-gap);
    display: flex;
    align-items: center;
    gap: 12px;
}

.avs-related-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--avs-color-primary);
    border-radius: 2px;
}

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

.avs-related-item {
    border-radius: var(--avs-border-radius);
    overflow: hidden;
}

.avs-related-item .avs-card-thumbnail {
    aspect-ratio: 16/10;
    margin-bottom: 12px;
    border-radius: var(--avs-border-radius);
}

.avs-related-item-title {
    font-size: 1rem;
    line-height: 1.4;
    margin: 0;
}

.avs-related-item-title a {
    color: var(--avs-color-secondary);
}

.avs-related-item-title a:hover {
    color: var(--avs-color-primary);
}

/* ==========================================================================
   Author Box
   ========================================================================== */
.avs-author-box {
    display: flex;
    gap: var(--avs-gap);
    background: var(--avs-color-bg-alt);
    padding: var(--avs-gap);
    margin-top: var(--avs-gap-lg);
    border-radius: var(--avs-border-radius);
    border-left: 4px solid var(--avs-color-primary);
}

.avs-author-avatar {
    flex-shrink: 0;
}

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

.avs-author-info h4 {
    margin-bottom: 4px;
    color: var(--avs-color-secondary);
}

.avs-author-role {
    font-family: var(--avs-font-ui);
    font-size: 0.8rem;
    color: var(--avs-color-primary);
    font-weight: 600;
    margin-bottom: 10px;
}

.avs-author-bio {
    font-size: 0.9375rem;
    color: var(--avs-color-text-light);
    margin: 0;
}

/* ==========================================================================
   Sidebar
   ========================================================================== */
.avs-aside {
    font-size: 0.9375rem;
}

.avs-widget {
    margin-bottom: var(--avs-gap);
    padding: var(--avs-gap);
    background: var(--avs-color-bg-alt);
    border-radius: var(--avs-border-radius);
}

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

.avs-widget-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--avs-gap-sm);
    padding-bottom: var(--avs-gap-sm);
    border-bottom: 2px solid var(--avs-color-primary);
    color: var(--avs-color-secondary);
}

.avs-widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.avs-widget li {
    padding: 8px 0;
    border-bottom: 1px solid var(--avs-color-border);
}

.avs-widget li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.avs-widget a {
    color: var(--avs-color-text);
}

.avs-widget a:hover {
    color: var(--avs-color-primary);
}

/* ==========================================================================
   Comments
   ========================================================================== */
.avs-comments {
    margin-top: var(--avs-gap-lg);
}

.avs-comments-title {
    font-size: 1.25rem;
    margin-bottom: var(--avs-gap);
    display: flex;
    align-items: center;
    gap: 12px;
}

.avs-comments-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--avs-color-primary);
    border-radius: 2px;
}

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

.avs-comment {
    padding: var(--avs-gap) 0;
    border-bottom: 1px solid var(--avs-color-border);
}

.avs-comment-header {
    display: flex;
    align-items: center;
    gap: var(--avs-gap-sm);
    margin-bottom: var(--avs-gap-sm);
}

.avs-comment-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.avs-comment-author {
    font-weight: 600;
    color: var(--avs-color-secondary);
}

.avs-comment-date {
    font-family: var(--avs-font-ui);
    font-size: 0.8rem;
    color: var(--avs-color-text-light);
}

.avs-comment-content {
    font-size: 0.9375rem;
    line-height: 1.6;
}

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

.avs-comment-reply {
    margin-top: 12px;
}

.avs-comment-reply a {
    font-family: var(--avs-font-ui);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.avs-comment-awaiting {
    background: #fef3cd;
    color: #856404;
    padding: 10px;
    border-radius: var(--avs-border-radius);
    font-size: 0.875rem;
}

/* Comment form */
.avs-comment-form {
    margin-top: var(--avs-gap);
}

.avs-comment-form label {
    display: block;
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--avs-color-secondary);
}

.avs-comment-form input[type="text"],
.avs-comment-form input[type="email"],
.avs-comment-form input[type="url"],
.avs-comment-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--avs-color-border);
    font-family: var(--avs-font-body);
    font-size: 1rem;
    margin-bottom: var(--avs-gap-sm);
    border-radius: var(--avs-border-radius);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.avs-comment-form input:focus,
.avs-comment-form textarea:focus {
    outline: none;
    border-color: var(--avs-color-primary);
    box-shadow: 0 0 0 3px rgba(255,102,0,0.15);
}

.avs-btn {
    display: inline-block;
    background: var(--avs-color-primary);
    color: #fff;
    border: none;
    padding: 14px 28px;
    font-family: var(--avs-font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    border-radius: var(--avs-border-radius);
}

.avs-btn:hover {
    background: var(--avs-color-accent);
    color: #fff;
    transform: translateY(-2px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.avs-footer {
    background: var(--avs-color-footer-bg);
    color: var(--avs-color-footer-text);
    padding: var(--avs-gap-lg) 0 var(--avs-gap);
}

.avs-footer a {
    color: var(--avs-color-footer-link);
}

.avs-footer a:hover {
    color: var(--avs-color-footer-link-hover);
}

.avs-footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--avs-gap);
    margin-bottom: var(--avs-gap);
    padding-bottom: var(--avs-gap);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.avs-footer-widget-title {
    color: #fff;
    font-size: 1rem;
    margin-bottom: var(--avs-gap-sm);
}

.avs-footer-nav {
    margin-bottom: var(--avs-gap);
}

.avs-footer-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--avs-gap);
    list-style: none;
    padding: 0;
    margin: 0;
}

.avs-footer-nav a {
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
}

.avs-footer-bottom {
    text-align: center;
    font-family: var(--avs-font-ui);
    font-size: 0.875rem;
}

.avs-footer-tagline {
    margin-bottom: 10px;
    font-style: italic;
}

.avs-copyright {
    color: rgba(255,255,255,0.6);
    margin: 0;
}

/* ==========================================================================
   Search
   ========================================================================== */
.avs-search-form {
    display: flex;
}

.avs-search-form input[type="search"] {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--avs-color-border);
    border-right: none;
    font-family: var(--avs-font-body);
    font-size: 1rem;
    border-radius: var(--avs-border-radius) 0 0 var(--avs-border-radius);
}

.avs-search-form input[type="search"]:focus {
    outline: none;
    border-color: var(--avs-color-primary);
}

.avs-search-form button {
    background: var(--avs-color-primary);
    color: #fff;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    border-radius: 0 var(--avs-border-radius) var(--avs-border-radius) 0;
    font-weight: 600;
    transition: background 0.2s;
}

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

/* Header search */
.avs-header-search {
    flex-shrink: 0;
}

.avs-header-search .search-form {
    display: flex;
    max-width: 280px;
}

.avs-header-search .search-field {
    padding: 10px 14px;
    border: 1px solid var(--avs-color-border);
    border-right: none;
    font-size: 0.9rem;
    width: 200px;
    border-radius: var(--avs-border-radius) 0 0 var(--avs-border-radius);
}

.avs-header-search .search-submit {
    padding: 10px 16px;
    background: var(--avs-color-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 0 var(--avs-border-radius) var(--avs-border-radius) 0;
    transition: background 0.2s;
}

.avs-header-search .search-submit:hover {
    background: var(--avs-color-accent);
}

/* Search results */
.avs-search-header {
    margin-bottom: var(--avs-gap);
    padding-bottom: var(--avs-gap);
    border-bottom: 1px solid var(--avs-color-border);
}

.avs-search-title {
    margin-bottom: var(--avs-gap-sm);
}

.avs-search-title span {
    color: var(--avs-color-primary);
}

.avs-search-count {
    font-family: var(--avs-font-ui);
    font-size: 0.9rem;
    color: var(--avs-color-text-light);
    margin-bottom: var(--avs-gap);
}

/* ==========================================================================
   404 Page
   ========================================================================== */
.avs-404 {
    text-align: center;
    padding: var(--avs-gap-lg) 0;
}

.avs-404-title {
    font-size: 8rem;
    font-weight: 800;
    color: var(--avs-color-primary);
    margin-bottom: 0;
    line-height: 1;
}

.avs-404-subtitle {
    font-size: 1.75rem;
    margin-bottom: var(--avs-gap);
    color: var(--avs-color-secondary);
}

.avs-404-text {
    color: var(--avs-color-text-light);
    margin-bottom: var(--avs-gap);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.avs-404-search {
    max-width: 400px;
    margin: 0 auto var(--avs-gap);
}

/* ==========================================================================
   Page
   ========================================================================== */
.avs-page .avs-article-header {
    text-align: center;
    margin-bottom: var(--avs-gap-lg);
}

.avs-page .avs-article-title {
    font-size: 2.5rem;
}

/* ==========================================================================
   Archive
   ========================================================================== */
.avs-archive-header {
    margin-bottom: var(--avs-gap);
    padding-bottom: var(--avs-gap);
    border-bottom: 1px solid var(--avs-color-border);
}

.avs-archive-title {
    margin-bottom: 8px;
}

.avs-archive-description {
    color: var(--avs-color-text-light);
    font-size: 1.0625rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .avs-aside {
        width: 100%;
    }

    .avs-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .avs-card-featured .avs-card-inner {
        grid-template-columns: 1fr;
    }

    .avs-card-featured .avs-card-thumbnail {
        min-height: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --avs-font-size-base: 15px;
        --avs-gap: 20px;
    }

    .avs-aside {
        display: none;
    }

    .avs-site-title {
        font-size: 1.5rem;
    }

    .avs-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .avs-nav-menu {
        display: none;
        flex-direction: column;
    }

    .avs-nav-menu.active {
        display: flex;
    }

    .avs-nav-menu a {
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .avs-posts-grid {
        grid-template-columns: 1fr;
    }

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

    .avs-post-nav {
        grid-template-columns: 1fr;
        gap: var(--avs-gap-sm);
    }

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

    .avs-author-box {
        flex-direction: column;
        text-align: center;
    }

    .avs-article-title {
        font-size: 1.75rem;
    }

    .avs-404-title {
        font-size: 5rem;
    }

    .avs-header-search {
        width: 100%;
        margin-top: var(--avs-gap-sm);
    }

    .avs-header-search .search-form {
        max-width: 100%;
    }

    .avs-header-search .search-field {
        flex: 1;
        width: auto;
    }
}

@media (max-width: 480px) {
    .avs-header-inner {
        flex-direction: column;
        text-align: center;
    }

    .avs-brand {
        flex-direction: column;
    }

    .avs-footer-widgets {
        grid-template-columns: 1fr;
    }

    .avs-header-top-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* ==========================================================================
   Sticky Header
   ========================================================================== */
.avs-sticky-header .avs-nav-primary {
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* ==========================================================================
   Left Sidebar
   ========================================================================== */
.avs-left-sidebar .avs-wrapper {
    flex-direction: row-reverse;
}

/* ==========================================================================
   Boxed Layout
   ========================================================================== */
.avs-layout-boxed {
    background: var(--avs-color-bg-alt);
}

.avs-layout-boxed .avs-header,
.avs-layout-boxed .avs-content,
.avs-layout-boxed .avs-footer {
    background: var(--avs-color-bg);
    max-width: var(--avs-content-width);
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 0 40px rgba(0,0,0,0.05);
}

/* ==========================================================================
   Footer Columns
   ========================================================================== */
.avs-footer-columns-1 {
    grid-template-columns: 1fr;
}

.avs-footer-columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.avs-footer-columns-3 {
    grid-template-columns: repeat(3, 1fr);
}

.avs-footer-columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .avs-footer-columns-2,
    .avs-footer-columns-3,
    .avs-footer-columns-4 {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Scroll to Top Button
   ========================================================================== */
.avs-scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--avs-color-primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, background 0.2s, transform 0.2s;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(255,102,0,0.3);
}

.avs-scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.avs-scroll-top:hover {
    background: var(--avs-color-accent);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .avs-scroll-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }
}

/* ==========================================================================
   Title Hover Effects
   ========================================================================== */
/* Underline */
.avs-title-effect-underline .avs-card-title a,
.avs-title-effect-underline .avs-related-item-title a {
    text-decoration: none;
    background-image: linear-gradient(var(--avs-color-primary), var(--avs-color-primary));
    background-size: 0% 2px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size 0.3s ease, color 0.2s ease;
}

.avs-title-effect-underline .avs-card-title a:hover,
.avs-title-effect-underline .avs-related-item-title a:hover {
    background-size: 100% 2px;
}

/* Color change */
.avs-title-effect-color .avs-card-title a:hover,
.avs-title-effect-color .avs-related-item-title a:hover {
    color: var(--avs-color-primary);
}

/* ==========================================================================
   Image Hover Effects
   ========================================================================== */
/* Zoom */
.avs-image-effect-zoom .avs-card-thumbnail {
    overflow: hidden;
}

.avs-image-effect-zoom .avs-card:hover .avs-card-thumbnail img {
    transform: scale(1.1);
}

/* Fade */
.avs-image-effect-fade .avs-card-thumbnail img {
    transition: opacity 0.3s ease, transform 0.4s ease;
}

.avs-image-effect-fade .avs-card:hover .avs-card-thumbnail img {
    opacity: 0.85;
}

/* Overlay */
.avs-image-effect-overlay .avs-card-thumbnail {
    position: relative;
}

.avs-image-effect-overlay .avs-card-thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--avs-color-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.avs-image-effect-overlay .avs-card:hover .avs-card-thumbnail::after {
    opacity: 0.15;
}

/* ==========================================================================
   No Posts
   ========================================================================== */
.avs-no-posts {
    text-align: center;
    padding: var(--avs-gap-lg);
    background: var(--avs-color-bg-alt);
    border-radius: var(--avs-border-radius);
}

.avs-no-posts h2 {
    margin-bottom: var(--avs-gap-sm);
}

.avs-no-posts p {
    color: var(--avs-color-text-light);
    margin: 0;
}

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