/*
Theme Name: Notion
Theme URI: #
Author: Theme Developer
Author URI: #
Description: Minimalist productivity blog theme inspired by Notion. Clean typography, ample whitespace, focused reading experience.
Version: 1.0.2
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: notion
Tags: blog, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Colors - Notion-inspired minimal palette */
    --ntn-color-primary: #000000;
    --ntn-color-secondary: #37352f;
    --ntn-color-accent: #2eaadc;
    --ntn-color-border: #e4e4e4;
    --ntn-color-bg: #ffffff;
    --ntn-color-bg-alt: #f7f6f3;
    --ntn-color-bg-hover: #f1f1ef;
    --ntn-color-text: #37352f;
    --ntn-color-text-light: #787774;
    --ntn-color-link: #37352f;
    --ntn-color-link-hover: #2eaadc;

    /* Typography */
    --ntn-font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --ntn-font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --ntn-font-mono: 'SFMono-Regular', Menlo, Consolas, 'PT Mono', 'Liberation Mono', monospace;

    /* Sizes */
    --ntn-font-size-base: 16px;
    --ntn-font-size-heading: 40px;
    --ntn-line-height-body: 1.6;
    --ntn-line-height-heading: 1.2;
    --ntn-letter-spacing-heading: -0.02em;
    --ntn-border-radius: 3px;
    --ntn-content-spacing: 24px;
    --ntn-content-width: 900px;
    --ntn-sidebar-width: 280px;

    /* Spacing */
    --ntn-gap: 24px;
    --ntn-gap-sm: 12px;
    --ntn-gap-lg: 48px;
}

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

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

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

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

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 1.875rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }
h5 { font-size: 1.125rem; font-weight: 600; }
h6 { font-size: 1rem; font-weight: 600; }

p {
    margin: 0 0 1em;
}

a {
    color: var(--ntn-color-link);
    text-decoration: underline;
    text-decoration-color: rgba(55, 53, 47, 0.4);
    text-underline-offset: 3px;
    transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover,
a:focus {
    color: var(--ntn-color-link-hover);
    text-decoration-color: var(--ntn-color-accent);
}

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

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

code, pre {
    font-family: var(--ntn-font-mono);
    font-size: 0.875em;
    background: var(--ntn-color-bg-alt);
    border-radius: var(--ntn-border-radius);
}

code {
    padding: 0.2em 0.4em;
    color: #eb5757;
}

pre {
    padding: 1em;
    overflow-x: auto;
}

pre code {
    padding: 0;
    background: none;
    color: inherit;
}

blockquote {
    margin: 1.5em 0;
    padding-left: 1em;
    border-left: 3px solid var(--ntn-color-primary);
    color: var(--ntn-color-text);
    font-style: normal;
}

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

.ntn-skip-link {
    background: var(--ntn-color-primary);
    color: #fff;
    padding: 10px 20px;
    position: absolute;
    top: -100px;
    left: 0;
    z-index: 9999;
    transition: top 0.3s;
    text-decoration: none;
}

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

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

.ntn-container--wide {
    max-width: 1200px;
}

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

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

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

/* ==========================================================================
   Header - Notion-style minimal
   ========================================================================== */
.ntn-header {
    background: var(--ntn-color-bg);
    padding: var(--ntn-gap) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--ntn-color-border);
}

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

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

.ntn-logo {
    max-height: 36px;
    width: auto;
}

.ntn-site-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.01em;
}

.ntn-site-title a {
    color: var(--ntn-color-primary);
    text-decoration: none;
}

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

.ntn-tagline {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin: 0;
    display: none;
}

/* ==========================================================================
   Navigation - Notion-style tabs
   ========================================================================== */
.ntn-nav {
    display: flex;
    align-items: center;
    gap: var(--ntn-gap-sm);
}

.ntn-nav-menu,
.ntn-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 4px;
}

.ntn-nav-menu li,
.ntn-menu li {
    position: relative;
}

.ntn-nav-menu a,
.ntn-menu a {
    display: block;
    padding: 6px 12px;
    color: var(--ntn-color-text-light);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease, color 0.15s ease;
}

.ntn-nav-menu a:hover,
.ntn-nav-menu a:focus,
.ntn-menu a:hover,
.ntn-menu a:focus {
    background: var(--ntn-color-bg-hover);
    color: var(--ntn-color-text);
}

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

/* Mobile menu toggle */
.ntn-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--ntn-color-text);
}

.ntn-menu-toggle svg {
    width: 20px;
    height: 20px;
    display: block;
}

.ntn-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ntn-color-text);
    margin: 4px 0;
}

/* Search Toggle & Overlay */
.ntn-search-toggle {
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--ntn-color-text);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.ntn-search-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.ntn-search-overlay.ntn-search-open {
    display: flex;
}

.ntn-search-overlay-inner {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
}

.ntn-search-close {
    position: absolute;
    top: 0;
    right: 0;
    background: transparent;
    border: none;
    padding: 1rem;
    cursor: pointer;
    color: var(--ntn-color-text);
}

.ntn-search-close:hover {
    color: var(--ntn-color-accent);
}

.ntn-search-input {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--ntn-color-border);
    border-radius: var(--ntn-border-radius);
    font-size: 1.25rem;
    font-family: var(--ntn-font-body);
}

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

.ntn-search-submit {
    display: none;
}

/* Header search */
.ntn-header-search {
    position: relative;
}

.ntn-header-search .search-form {
    display: flex;
    align-items: center;
}

.ntn-header-search .search-field {
    padding: 6px 12px;
    border: 1px solid var(--ntn-color-border);
    border-radius: var(--ntn-border-radius);
    font-size: 0.875rem;
    width: 200px;
    background: var(--ntn-color-bg-alt);
    transition: border-color 0.15s ease, background 0.15s ease;
}

.ntn-header-search .search-field:focus {
    outline: none;
    border-color: var(--ntn-color-accent);
    background: var(--ntn-color-bg);
}

.ntn-header-search .search-submit {
    display: none;
}

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

/* ==========================================================================
   Breadcrumbs - Notion-style path
   ========================================================================== */
.ntn-breadcrumbs {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
}

.ntn-breadcrumbs a {
    color: var(--ntn-color-text-light);
    text-decoration: none;
    padding: 2px 6px;
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
}

.ntn-breadcrumbs a:hover {
    background: var(--ntn-color-bg-hover);
    color: var(--ntn-color-text);
}

.ntn-breadcrumbs-sep {
    color: var(--ntn-color-border);
}

.ntn-breadcrumbs-current {
    color: var(--ntn-color-text);
}

/* ==========================================================================
   Article - Single post
   ========================================================================== */
.ntn-article {
    margin-bottom: var(--ntn-gap-lg);
}

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

.ntn-article-icon {
    font-size: 4rem;
    margin-bottom: var(--ntn-gap);
    line-height: 1;
}

.ntn-article-title {
    font-size: var(--ntn-font-size-heading);
    line-height: var(--ntn-line-height-heading);
    margin-bottom: var(--ntn-gap-sm);
    font-weight: 700;
}

.ntn-article-meta {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ntn-gap-sm);
}

.ntn-article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

.ntn-article-meta a:hover {
    color: var(--ntn-color-accent);
}

.ntn-meta-divider {
    color: var(--ntn-color-border);
}

.ntn-article-excerpt {
    font-size: 1.125rem;
    color: var(--ntn-color-text-light);
    margin: var(--ntn-gap) 0;
    line-height: 1.6;
}

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

.ntn-article-cover img {
    width: 100%;
}

.ntn-article-content {
    font-size: 1rem;
    line-height: 1.7;
}

.ntn-article-content > *:first-child {
    margin-top: 0;
}

.ntn-article-content h2 {
    margin-top: 2em;
    padding-top: 0.5em;
}

.ntn-article-content h3 {
    margin-top: 1.5em;
}

.ntn-article-content ul,
.ntn-article-content ol {
    padding-left: 1.5em;
}

.ntn-article-content li {
    margin-bottom: 0.5em;
}

/* Callout blocks - Notion style */
.ntn-callout {
    display: flex;
    gap: var(--ntn-gap-sm);
    padding: var(--ntn-gap);
    background: var(--ntn-color-bg-alt);
    border-radius: var(--ntn-border-radius);
    margin: 1.5em 0;
}

.ntn-callout-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.ntn-callout-content {
    flex: 1;
}

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

/* Tags */
.ntn-tags {
    margin-top: var(--ntn-gap-lg);
    padding-top: var(--ntn-gap);
    border-top: 1px solid var(--ntn-color-border);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.ntn-tags-label {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
}

.ntn-tag {
    display: inline-block;
    padding: 3px 8px;
    background: var(--ntn-color-bg-alt);
    border-radius: var(--ntn-border-radius);
    font-size: 0.875rem;
    color: var(--ntn-color-text);
    text-decoration: none;
    transition: background 0.15s ease;
}

.ntn-tag:hover {
    background: var(--ntn-color-bg-hover);
    text-decoration: none;
}

/* Reading time */
.ntn-reading-time {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
}

/* ==========================================================================
   Cards - Archive / Posts list
   ========================================================================== */
.ntn-posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--ntn-gap);
}

.ntn-card {
    display: flex;
    gap: var(--ntn-gap);
    padding: var(--ntn-gap);
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
    margin: 0 calc(-1 * var(--ntn-gap));
}

.ntn-card:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-card--sticky {
    background: var(--ntn-color-bg-alt);
}

.ntn-card--sticky:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-card-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 32px;
    text-align: center;
}

.ntn-card-thumbnail {
    flex-shrink: 0;
    width: 120px;
    height: 80px;
    overflow: hidden;
    border-radius: var(--ntn-border-radius);
}

.ntn-card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.ntn-card-body {
    flex: 1;
    min-width: 0;
}

.ntn-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 4px;
    line-height: 1.4;
}

.ntn-card-title a {
    color: var(--ntn-color-primary);
    text-decoration: none;
}

.ntn-card-title a:hover {
    color: var(--ntn-color-accent);
}

.ntn-card-excerpt {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin: 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ntn-card-meta {
    font-size: 0.75rem;
    color: var(--ntn-color-text-light);
    margin-top: 8px;
    display: flex;
    gap: 12px;
}

.ntn-sticky-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--ntn-color-accent);
    margin-bottom: 4px;
}

/* Featured card */
.ntn-card--featured {
    flex-direction: column;
    padding: var(--ntn-gap-lg) var(--ntn-gap);
    background: var(--ntn-color-bg-alt);
    border-radius: var(--ntn-border-radius);
    margin-bottom: var(--ntn-gap);
}

.ntn-card--featured .ntn-card-thumbnail {
    width: 100%;
    height: 200px;
}

.ntn-card--featured .ntn-card-title {
    font-size: 1.5rem;
    margin-top: var(--ntn-gap);
}

.ntn-card--featured .ntn-card-excerpt {
    font-size: 1rem;
    -webkit-line-clamp: 3;
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.ntn-pagination {
    margin-top: var(--ntn-gap-lg);
    padding-top: var(--ntn-gap);
    border-top: 1px solid var(--ntn-color-border);
}

.ntn-pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: 4px;
}

.ntn-pagination a,
.ntn-pagination span {
    display: inline-block;
    padding: 8px 14px;
    font-size: 0.875rem;
    color: var(--ntn-color-text);
    text-decoration: none;
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
}

.ntn-pagination a:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-pagination .current {
    background: var(--ntn-color-bg-alt);
    font-weight: 600;
}

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

.ntn-post-nav-link {
    padding: var(--ntn-gap);
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
}

.ntn-post-nav-link:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-post-nav-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: 4px;
}

.ntn-post-nav-title {
    font-size: 0.875rem;
    font-weight: 500;
}

.ntn-post-nav-title a {
    color: var(--ntn-color-text);
    text-decoration: none;
}

.ntn-post-nav-title a:hover {
    color: var(--ntn-color-accent);
}

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

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

.ntn-related-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ntn-color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--ntn-gap);
}

.ntn-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--ntn-gap);
}

.ntn-related-item {
    padding: var(--ntn-gap-sm);
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
}

.ntn-related-item:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-related-item-title {
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0;
    line-height: 1.4;
}

.ntn-related-item-title a {
    color: var(--ntn-color-text);
    text-decoration: none;
}

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

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

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

.ntn-author-avatar img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
}

.ntn-author-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.ntn-author-bio {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin: 0;
}

/* ==========================================================================
   Sidebar
   ========================================================================== */
.ntn-aside,
.ntn-sidebar {
    font-size: 0.875rem;
    width: var(--ntn-sidebar-width);
    flex-shrink: 0;
}

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

.ntn-widget-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap-sm);
}

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

.ntn-widget li {
    padding: 6px 0;
    border-bottom: 1px solid var(--ntn-color-border);
}

.ntn-widget li:last-child {
    border-bottom: none;
}

.ntn-widget a {
    color: var(--ntn-color-text);
    text-decoration: none;
}

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

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

.ntn-comments-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap);
}

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

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

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

.ntn-comment-avatar img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.ntn-comment-author {
    font-weight: 600;
    font-size: 0.875rem;
}

.ntn-comment-date {
    font-size: 0.75rem;
    color: var(--ntn-color-text-light);
}

.ntn-comment-content {
    font-size: 0.9375rem;
}

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

.ntn-comment-reply {
    margin-top: 8px;
}

.ntn-comment-reply a {
    font-size: 0.75rem;
    color: var(--ntn-color-text-light);
}

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

.ntn-comment-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.ntn-comment-form input[type="text"],
.ntn-comment-form input[type="email"],
.ntn-comment-form input[type="url"],
.ntn-comment-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--ntn-color-border);
    border-radius: var(--ntn-border-radius);
    font-family: var(--ntn-font-body);
    font-size: 0.9375rem;
    margin-bottom: var(--ntn-gap-sm);
    background: var(--ntn-color-bg);
    transition: border-color 0.15s ease;
}

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

.ntn-comment-form button,
.ntn-btn {
    background: var(--ntn-color-accent);
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-family: var(--ntn-font-body);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--ntn-border-radius);
    transition: opacity 0.15s ease;
}

.ntn-comment-form button:hover,
.ntn-btn:hover {
    opacity: 0.9;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.ntn-footer {
    background: var(--ntn-color-bg-alt);
    padding: var(--ntn-gap-lg) 0 var(--ntn-gap);
    margin-top: var(--ntn-gap-lg);
    border-top: 1px solid var(--ntn-color-border);
}

.ntn-footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--ntn-gap);
    margin-bottom: var(--ntn-gap);
}

.ntn-footer-widget {
    font-size: 0.875rem;
}

.ntn-footer-widget-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap-sm);
}

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

.ntn-footer-widget li {
    padding: 4px 0;
}

.ntn-footer-widget a {
    color: var(--ntn-color-text);
    text-decoration: none;
}

.ntn-footer-widget a:hover {
    color: var(--ntn-color-accent);
}

.ntn-footer-nav {
    margin-bottom: var(--ntn-gap);
    padding-bottom: var(--ntn-gap);
    border-bottom: 1px solid var(--ntn-color-border);
}

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

.ntn-footer-nav a {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    text-decoration: none;
}

.ntn-footer-nav a:hover {
    color: var(--ntn-color-text);
}

.ntn-footer-bottom {
    text-align: center;
}

.ntn-footer-tagline {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin-bottom: 8px;
}

.ntn-copyright {
    font-size: 0.75rem;
    color: var(--ntn-color-text-light);
    margin: 0;
}

/* ==========================================================================
   Search
   ========================================================================== */
.ntn-search-form {
    display: flex;
    gap: 8px;
}

.ntn-search-form input[type="search"] {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--ntn-color-border);
    border-radius: var(--ntn-border-radius);
    font-family: var(--ntn-font-body);
    font-size: 0.9375rem;
    background: var(--ntn-color-bg);
}

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

.ntn-search-form button {
    background: var(--ntn-color-bg-alt);
    color: var(--ntn-color-text);
    border: 1px solid var(--ntn-color-border);
    padding: 10px 16px;
    cursor: pointer;
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
}

.ntn-search-form button:hover {
    background: var(--ntn-color-bg-hover);
}

/* Search results */
.ntn-search-header {
    margin-bottom: var(--ntn-gap-lg);
}

.ntn-search-title {
    font-size: 1.5rem;
    margin-bottom: var(--ntn-gap-sm);
}

.ntn-search-title span {
    color: var(--ntn-color-accent);
}

.ntn-search-count {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap);
}

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

.ntn-404-icon {
    font-size: 4rem;
    margin-bottom: var(--ntn-gap);
}

.ntn-404-title {
    font-size: 2rem;
    margin-bottom: var(--ntn-gap-sm);
}

.ntn-404-text {
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ==========================================================================
   Archive Header
   ========================================================================== */
.ntn-archive-header {
    margin-bottom: var(--ntn-gap-lg);
}

.ntn-archive-title {
    font-size: 1.5rem;
    margin-bottom: var(--ntn-gap-sm);
}

.ntn-archive-description {
    font-size: 1rem;
    color: var(--ntn-color-text-light);
}

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

/* ==========================================================================
   Scroll to Top Button
   ========================================================================== */
.ntn-scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 40px;
    height: 40px;
    background: var(--ntn-color-bg);
    color: var(--ntn-color-text);
    border: 1px solid var(--ntn-color-border);
    border-radius: var(--ntn-border-radius);
    font-size: 1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, background 0.15s;
    z-index: 99;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.ntn-scroll-top:hover {
    background: var(--ntn-color-bg-hover);
}

/* ==========================================================================
   Sidebar Layout Classes
   ========================================================================== */
.ntn-left-sidebar .ntn-wrapper {
    flex-direction: row-reverse;
}

.ntn-no-sidebar .ntn-aside {
    display: none;
}

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

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

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

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

/* ==========================================================================
   Title Hover Effects
   ========================================================================== */
.ntn-title-effect-underline .ntn-card-title a,
.ntn-title-effect-underline .ntn-related-item-title a {
    text-decoration: none;
    background-image: linear-gradient(var(--ntn-color-accent), var(--ntn-color-accent));
    background-size: 0% 1px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size 0.3s ease, color 0.15s ease;
}

.ntn-title-effect-underline .ntn-card-title a:hover,
.ntn-title-effect-underline .ntn-related-item-title a:hover {
    background-size: 100% 1px;
}

.ntn-title-effect-color .ntn-card-title a:hover,
.ntn-title-effect-color .ntn-related-item-title a:hover {
    color: var(--ntn-color-accent);
}

/* ==========================================================================
   Image Hover Effects
   ========================================================================== */
.ntn-image-effect-zoom .ntn-card:hover .ntn-card-thumbnail img {
    transform: scale(1.1);
}

.ntn-image-effect-fade .ntn-card:hover .ntn-card-thumbnail img {
    opacity: 0.85;
    transform: none;
}

.ntn-image-effect-none .ntn-card:hover .ntn-card-thumbnail img {
    transform: none;
}

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

    .ntn-wrapper {
        flex-direction: column;
    }

    .ntn-left-sidebar .ntn-wrapper {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    :root {
        --ntn-font-size-base: 16px;
        --ntn-font-size-heading: 32px;
        --ntn-gap: 20px;
        --ntn-gap-lg: 32px;
    }

    .ntn-aside,
    .ntn-sidebar {
        display: none;
    }

    .ntn-header-inner {
        flex-wrap: wrap;
    }

    .ntn-nav {
        order: 3;
        width: 100%;
    }

    .ntn-menu-toggle {
        display: block;
    }

    .ntn-nav-menu,
    .ntn-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        padding-top: var(--ntn-gap-sm);
    }

    .ntn-nav.ntn-nav-open .ntn-nav-menu,
    .ntn-nav.ntn-nav-open .ntn-menu {
        display: flex;
    }

    .ntn-nav-menu a,
    .ntn-menu a {
        padding: 10px 0;
    }

    .ntn-header-search {
        display: none;
    }

    .ntn-card {
        flex-direction: column;
    }

    .ntn-card-thumbnail {
        width: 100%;
        height: 160px;
    }

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

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

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

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

    .ntn-footer-columns-2,
    .ntn-footer-columns-3,
    .ntn-footer-columns-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .ntn-card--featured .ntn-card-title {
        font-size: 1.25rem;
    }

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

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

/* ==========================================================================
   Layout Wrapper (index.php, archive.php)
   ========================================================================== */
.ntn-layout {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ntn-gap-lg);
}

.ntn-layout .ntn-content {
    flex: 1;
    min-width: 0;
}

.ntn-layout .ntn-aside,
.ntn-layout .ntn-sidebar {
    width: var(--ntn-sidebar-width);
    flex-shrink: 0;
}

.ntn-layout.left-sidebar {
    flex-direction: row-reverse;
}

.ntn-layout.no-sidebar .ntn-aside,
.ntn-layout.no-sidebar .ntn-sidebar {
    display: none;
}

.ntn-layout.no-sidebar .ntn-content {
    max-width: 100%;
}

@media (max-width: 1024px) {
    .ntn-layout {
        flex-direction: column;
    }

    .ntn-layout .ntn-aside,
    .ntn-layout .ntn-sidebar {
        width: 100%;
    }

    .ntn-layout.left-sidebar {
        flex-direction: column;
    }
}

/* ==========================================================================
   Featured Section
   ========================================================================== */
.ntn-featured {
    margin-bottom: var(--ntn-gap-lg);
    padding-bottom: var(--ntn-gap-lg);
    border-bottom: 1px solid var(--ntn-color-border);
}

.ntn-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: var(--ntn-gap);
}

.ntn-featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--ntn-gap);
}

/* ==========================================================================
   Article Cards (from ntn_post_card function)
   ========================================================================== */
.ntn-article-card {
    display: flex;
    flex-direction: column;
    background: var(--ntn-color-bg);
    border-radius: var(--ntn-border-radius);
    transition: background 0.15s ease;
    padding: var(--ntn-gap-sm);
    margin: calc(-1 * var(--ntn-gap-sm));
}

.ntn-article-card:hover {
    background: var(--ntn-color-bg-hover);
}

.ntn-article-card.sticky {
    background: var(--ntn-color-bg-alt);
}

.ntn-article-thumb {
    position: relative;
    display: block;
    margin-bottom: var(--ntn-gap-sm);
    border-radius: var(--ntn-border-radius);
    overflow: hidden;
}

.ntn-article-thumb img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.ntn-article-category {
    position: absolute;
    bottom: var(--ntn-gap-sm);
    left: var(--ntn-gap-sm);
    padding: 4px 8px;
    background: var(--ntn-color-bg);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--ntn-border-radius);
    text-decoration: none;
    color: var(--ntn-color-text);
}

.ntn-article-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ntn-sticky-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--ntn-color-accent);
    margin-bottom: 4px;
    font-weight: 500;
}

.ntn-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ntn-gap-sm);
    font-size: 0.75rem;
    color: var(--ntn-color-text-light);
    margin-bottom: 8px;
}

.ntn-article-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 8px;
    line-height: 1.4;
}

.ntn-article-title a {
    color: var(--ntn-color-primary);
    text-decoration: none;
}

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

.ntn-article-excerpt {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   Single Article
   ========================================================================== */
.ntn-single-article {
    margin-bottom: var(--ntn-gap-lg);
}

.ntn-single-header {
    margin-bottom: var(--ntn-gap-lg);
}

.ntn-single-categories {
    margin-bottom: var(--ntn-gap-sm);
}

.ntn-single-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-accent);
    text-decoration: none;
    margin-right: 8px;
}

.ntn-single-category:hover {
    text-decoration: underline;
}

.ntn-single-title {
    font-size: var(--ntn-font-size-heading);
    line-height: var(--ntn-line-height-heading);
    margin-bottom: var(--ntn-gap-sm);
    font-weight: 700;
}

.ntn-single-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ntn-gap-sm);
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
}

.ntn-single-meta a {
    color: var(--ntn-color-text-light);
}

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

.ntn-single-thumbnail {
    margin: 0 0 var(--ntn-gap-lg);
}

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

.ntn-single-thumbnail figcaption {
    font-size: 0.875rem;
    color: var(--ntn-color-text-light);
    text-align: center;
    margin-top: var(--ntn-gap-sm);
}

.ntn-single-content {
    font-size: 1rem;
    line-height: 1.7;
}

.ntn-single-content > *:first-child {
    margin-top: 0;
}

.ntn-single-content h2 {
    margin-top: 2em;
    padding-top: 0.5em;
}

.ntn-single-content h3 {
    margin-top: 1.5em;
}

.ntn-single-footer {
    margin-top: var(--ntn-gap-lg);
}

.ntn-page-links {
    margin-top: var(--ntn-gap);
    padding: var(--ntn-gap);
    background: var(--ntn-color-bg-alt);
    border-radius: var(--ntn-border-radius);
}

.ntn-page-links-label {
    font-weight: 600;
    margin-right: var(--ntn-gap-sm);
}

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

.ntn-post-nav-prev,
.ntn-post-nav-next {
    display: block;
    padding: var(--ntn-gap);
    border-radius: var(--ntn-border-radius);
    text-decoration: none;
    transition: background 0.15s ease;
}

.ntn-post-nav-prev:hover,
.ntn-post-nav-next:hover {
    background: var(--ntn-color-bg-hover);
}

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

.ntn-post-nav-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ntn-color-text-light);
    margin-bottom: 4px;
}

.ntn-post-nav-title {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ntn-color-text);
}

/* No posts */
.ntn-no-posts {
    text-align: center;
    padding: var(--ntn-gap-lg);
}

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

.ntn-no-posts p {
    color: var(--ntn-color-text-light);
}

/* Grid Layout Options */
.ntn-articles-grid {
    display: grid;
    gap: var(--ntn-gap);
}

.ntn-articles-grid.grid-3col {
    grid-template-columns: repeat(3, 1fr);
}

.ntn-articles-grid.grid-2col {
    grid-template-columns: repeat(2, 1fr);
}

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

.ntn-articles-grid.grid-list .ntn-article-card {
    flex-direction: row;
    gap: var(--ntn-gap);
}

.ntn-articles-grid.grid-list .ntn-article-thumb {
    flex: 0 0 250px;
    margin-bottom: 0;
}

.ntn-articles-grid.grid-list .ntn-article-thumb img {
    aspect-ratio: 4/3;
}

.ntn-articles-grid.grid-list .ntn-article-body {
    flex: 1;
}

@media (max-width: 1024px) {
    .ntn-articles-grid.grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .ntn-articles-grid.grid-3col,
    .ntn-articles-grid.grid-2col {
        grid-template-columns: 1fr;
    }

    .ntn-articles-grid.grid-list .ntn-article-card {
        flex-direction: column;
    }

    .ntn-articles-grid.grid-list .ntn-article-thumb {
        flex: none;
        margin-bottom: var(--ntn-gap-sm);
    }

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

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