/*
Theme Name: GridTheme
Theme URI: https://example.com
Description: Modern, clean grid-based WordPress theme
Version: 1.0
Author: GridTheme
Text Domain: gridtheme
*/

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

:root {
    --color-bg: #f9f9f9;
    --color-surface: #ffffff;
    --color-border: #e5e7eb;
    --color-text: #111827;
    --color-muted: #6b7280;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --radius: 10px;
    --shadow: 0 1px 4px rgba(0,0,0,.08);
    --shadow-hover: 0 6px 20px rgba(0,0,0,.12);
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --container: 1200px;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* =====================
   LAYOUT
   ===================== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* =====================
   HEADER
   ===================== */
#site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.site-logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.site-logo span { color: var(--color-accent); }

/* Nav */
.site-nav ul {
    display: flex;
    gap: 8px;
}

.site-nav a {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-muted);
    transition: color .2s, background .2s;
}

.site-nav a:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

/* Ad Banner - Header */
.ad-banner-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
    text-align: center;
}

/* =====================
   HOMEPAGE GRID
   ===================== */
.home-grid-section { padding: 40px 0 60px; }

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-border);
}

/* Ad between rows */
.ad-between-rows {
    margin: 32px 0;
    text-align: center;
}

.post-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Post Card */
.post-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow .25s, transform .25s;
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.post-card-thumb {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-border);
}

.post-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s;
}

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

.post-card-thumb .no-thumb {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.1rem;
    color: #d1d5db;
}

.post-card-body {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.post-card-cat {
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-accent);
}

.post-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.post-card-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    color: var(--color-muted);
}

.post-card-meta time { display: flex; align-items: center; gap: 4px; }

/* =====================
   SINGLE POST
   ===================== */
.single-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 48px;
    padding: 40px 0 60px;
    align-items: start;
}

/* Post header */
.post-header { margin-bottom: 28px; }

.post-breadcrumb {
    font-size: 1rem;
    color: var(--color-muted);
    margin-bottom: 16px;
}

.post-breadcrumb a:hover { color: var(--color-accent); }
.post-breadcrumb span { margin: 0 6px; }

.post-category-badge {
    display: inline-block;
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-accent);
    background: #eff6ff;
    padding: 3px 10px;
    border-radius: 50px;
    margin-bottom: 12px;
}

.post-title {
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -.02em;
    margin-bottom: 16px;
}

.post-meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 1rem;
    color: var(--color-muted);
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.post-meta-bar strong { color: var(--color-text); }

/* Featured image */
.post-featured-image {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 28px;
}

.post-featured-image img {
    width: 100%;
    aspect-ratio: 16/7;
    object-fit: cover;
}

/* Ad - before content */
.ad-before-content, .ad-after-content, .ad-in-content {
    margin: 28px 0;
    text-align: center;
    background: var(--color-bg);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Post content */
.post-content {
    font-size: 1rem;
    line-height: 1.8;
    color: #374151;
}

.post-content h2 { font-size: 1.5rem; font-weight: 700; margin: 32px 0 12px; }
.post-content h3 { font-size: 1.2rem; font-weight: 700; margin: 24px 0 10px; }
.post-content p { margin-bottom: 18px; }
.post-content ul, .post-content ol { margin: 16px 0 16px 24px; }
.post-content li { margin-bottom: 6px; list-style: disc; }
.post-content ol li { list-style: decimal; }
.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: 12px 20px;
    background: #eff6ff;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 20px 0;
    font-style: italic;
    color: var(--color-muted);
}
.post-content a { color: var(--color-accent); text-decoration: underline; }
.post-content img { border-radius: 8px; margin: 20px auto; }
.post-content code {
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .92em;
}
.post-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 20px 0;
}

/* Tags */
.post-tags {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    font-size: 1.05rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 4px 12px;
    border-radius: 50px;
    color: var(--color-muted);
    transition: all .2s;
}

.tag-item:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

/* Author box */
.author-box {
    margin-top: 32px;
    padding: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.author-avatar { border-radius: 50%; overflow: hidden; flex-shrink: 0; }
.author-name { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.author-bio { font-size: 1.05rem; color: var(--color-muted); }

/* Related posts */
.related-posts { margin-top: 40px; }
.related-posts .section-title { font-size: 1rem; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 16px;
}

/* Sidebar */

.sidebar-widget {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}

.widget-title {
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-muted);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-ad-widget {
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    margin-bottom: 24px;
    text-align: center;
    padding: 10px;
}

.recent-post-item {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.recent-post-item:last-child { border-bottom: none; }

.recent-thumb {
    width: 56px;
    height: 56px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-border);
}

.recent-thumb img { width: 100%; height: 100%; object-fit: cover; }

.recent-post-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recent-post-title a:hover { color: var(--color-accent); }
.recent-post-date { font-size: 1.05rem; color: var(--color-muted); margin-top: 4px; }

.recent-thumb--empty {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-border);
    font-size: 1.2rem;
}

/* =====================
   FOOTER
   ===================== */
#site-footer {
    background: #111827;
    color: #9ca3af;
    padding: 48px 0 24px;
    margin-top: 60px;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.footer-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -.01em;
}

.footer-logo span { color: var(--color-accent); }

.footer-divider {
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    border: none;
    border-radius: 2px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 24px;
}

.footer-links a {
    font-size: .875rem;
    color: #9ca3af;
    transition: color .2s;
}

.footer-links a:hover { color: #fff; }

.footer-copy {
    font-size: .82rem;
    color: #6b7280;
    padding-top: 8px;
    border-top: 1px solid #1f2937;
    width: 100%;
    text-align: center;
}

/* =====================
   CATEGORY NAV BAR
   ===================== */
.cat-nav {
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}
.cat-nav::-webkit-scrollbar { display: none; }

.cat-nav .container { padding: 0 20px; }

.cat-nav ul {
    display: flex;
    flex-wrap: nowrap;
    gap: 0;
    margin: 0;
    padding: 0;
}

.cat-nav a {
    display: block;
    padding: 10px 16px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-muted);
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: color .15s, border-color .15s;
}

.cat-nav a:hover {
    color: var(--color-text);
    border-bottom-color: var(--color-border);
}

.cat-nav a.active,
.cat-nav .current-menu-item > a,
.cat-nav .current_page_item > a {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 1024px) {
    .post-grid { grid-template-columns: repeat(2, 1fr); }
    .single-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .post-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .post-title { font-size: 1.5rem; }
    .site-nav { display: none; }
    
    .related-grid { grid-template-columns: 1fr; }
    .author-box { flex-direction: column; }
    .footer-inner { gap: 16px; }
}

@media (max-width: 400px) {
    .post-grid { grid-template-columns: 1fr; }
}

/* =====================
   COMMENTS
   ===================== */
#comments {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 2px solid var(--color-border);
}

.comments-title,
.comment-reply-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

.comment-reply-title small {
    font-size: 1rem;
    font-weight: 400;
    margin-left: 10px;
}

.comment-reply-title small a {
    color: var(--color-accent);
}

/* Comment list */
.comment-list {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comment-list .comment,
.comment-list .pingback {
    list-style: none;
}

.comment-list .comment > .comment-body {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
    transition: box-shadow .2s;
}

.comment-list .comment > .comment-body:hover {
    box-shadow: var(--shadow-hover);
}

.comment-list .children {
    margin-top: 12px;
    margin-left: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-left: 3px solid var(--color-accent);
    padding-left: 16px;
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.comment-author .avatar {
    border-radius: 50%;
    width: 44px;
    height: 44px;
    object-fit: cover;
    flex-shrink: 0;
}

.comment-author b {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.comment-author a {
    color: inherit;
}

.comment-metadata {
    font-size: .83rem;
    color: var(--color-muted);
    margin-top: 6px;
    margin-left: 56px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.comment-content {
    margin-top: 12px;
    font-size: .95rem;
    line-height: 1.75;
    color: #374151;
}

.comment-content p { margin-bottom: 8px; }

.comment-awaiting-moderation {
    display: inline-block;
    font-size: .82rem;
    background: #fef9c3;
    color: #92400e;
    padding: 2px 8px;
    border-radius: 4px;
    margin-top: 4px;
}

.reply {
    margin-top: 10px;
    display: flex;
    justify-content: flex-end;
}

.comment-reply-link {
    font-size: .85rem;
    font-weight: 600;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 3px 12px;
    border-radius: 50px;
    transition: all .2s;
}

.comment-reply-link:hover {
    background: var(--color-accent);
    color: #fff;
}

/* ===== Comment Form ===== */
#respond {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    margin-top: 32px;
}

#respond .comment-reply-title {
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border);
}

.comment-notes {
    font-size: .9rem;
    color: var(--color-muted);
    margin-bottom: 20px;
}

.required-field-message {
    font-size: .9rem;
    color: var(--color-muted);
}

.comment-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.comment-form-author,
.comment-form-email,
.comment-form-url,
.comment-form-comment {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.comment-form-comment { grid-column: 1 / -1; order: 0; }
.comment-form-author  { order: 1; }
.comment-form-email   { order: 2; }
.comment-form-url     { grid-column: 1 / -1; order: 3; }

.comment-form-cookies-consent {
    grid-column: 1 / -1;
    order: 4;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: .9rem;
    color: var(--color-muted);
}

.form-submit {
    grid-column: 1 / -1;
    order: 5;
    margin-top: 4px;
}

.comment-form label {
    font-size: .9rem;
    font-weight: 600;
    color: var(--color-text);
}

.comment-form label .required {
    color: var(--color-accent);
    margin-left: 2px;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font);
    font-size: .95rem;
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color .2s, box-shadow .2s;
    outline: none;
}

.comment-form input[type="text"]:focus,
.comment-form input[type="email"]:focus,
.comment-form input[type="url"]:focus,
.comment-form textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.1);
    background: #fff;
}

.comment-form textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

.comment-form-cookies-consent input[type="checkbox"] {
    margin-top: 2px;
    accent-color: var(--color-accent);
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}

.form-submit #submit {
    display: inline-flex;
    align-items: center;
    padding: 11px 28px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s, transform .15s;
}

.form-submit #submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.form-submit #submit:active {
    transform: translateY(0);
}

@media (max-width: 640px) {
    .comment-list .children {
        margin-left: 12px;
        padding-left: 12px;
    }

    .comment-list .comment > .comment-body {
        padding: 16px;
    }

    .comment-metadata {
        margin-left: 48px;
    }

    .comment-form {
        grid-template-columns: 1fr;
    }

    .comment-form-url,
    .comment-form-cookies-consent,
    .comment-form-comment,
    .form-submit {
        grid-column: 1;
    }

    #respond {
        padding: 20px 16px;
    }
}

/* =====================
   PAGINATION
   ===================== */
.pagination-wrap {
    text-align: center;
    margin-top: 40px;
}

/* =====================
   NO RESULTS / EMPTY STATES
   ===================== */
.no-results {
    color: var(--color-muted);
    padding: 40px 0;
}

.comments-closed {
    color: var(--color-muted);
    font-size: .9rem;
    margin-top: 24px;
}

/* =====================
   404 PAGE
   ===================== */
.not-found {
    padding: 80px 20px;
    text-align: center;
}

.not-found__code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-border);
}

.not-found__msg {
    font-size: 1.2rem;
    color: var(--color-muted);
    margin: 12px 0 28px;
}

.not-found__btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--color-accent);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    transition: background .2s;
}

.not-found__btn:hover {
    background: var(--color-accent-hover);
}

/* Second post-grid row top spacing */
.post-grid--bottom {
    margin-top: 20px;
}