/*
Theme Name: Lumen Mint
Theme URI: https://huydev.local/lumen/
Author: HuyDev
Author URI: https://huydev.local/
Description: Lumen variant — a bright, fresh theme with soft mint-green accents, rounded cards, gentle shadows and a three-column grid. Configurable footer copyright.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lumen
Tags: blog, grid, colorful, cards, featured-images, custom-menu, translation-ready
*/
:root{
    --ink: #10241c;
    --ink-soft: #3c5349;
    --muted: #8aa79b;
    --line: #e2efe9;
    --paper: #ffffff;
    --paper-2: #eef8f3;
    --accent: #047857;
    --accent-soft: #d6f5e9;
    --on-accent: #ffffff;
    --display: "Poppins",sans-serif;
    --display-weight: 700;
    --sans: "Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    --measure: 44rem;
    --wide: 70rem;
    --radius: 18px;
    --radius-sm: 12px;
    --card-bg: #ffffff;
    --card-border: #eaf3ef;
    --card-pad: 14px;
    --card-shadow: 0 6px 18px rgba(16,36,28,.06);
    --card-shadow-hover: 0 14px 34px rgba(16,36,28,.12);
}
/* ===============================================================
   LUMEN ENGINE — shared component rules.
   All colours, fonts, radius and shadows come from :root tokens
   defined per theme above this block. Layout personality overrides
   are appended below this block.
   =============================================================== */

*, *::before, *::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body{
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 1.0625rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img{ max-width: 100%; height: auto; display: block; }
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4{ font-family: var(--display); font-weight: var(--display-weight, 600); line-height: 1.2; color: var(--ink); margin: 0; }
ul{ margin: 0; padding: 0; list-style: none; }
button{ font-family: inherit; }
::selection{ background: var(--accent-soft); color: var(--ink); }

.wrap{ width: 100%; max-width: var(--measure); margin-inline: auto; padding-inline: 1.5rem; }
.wrap-wide{ max-width: var(--wide); }
.eyebrow{
    font-family: var(--sans);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}
.screen-reader-text{ position: absolute; left: -9999px; }
.skip-link{ position: absolute; left: -9999px; }
.skip-link:focus{ left: 1rem; top: 1rem; background: var(--ink); color: var(--paper); padding: .5rem 1rem; border-radius: 6px; z-index: 200; }

/* --- Header --- */
.site-header{ border-bottom: 1px solid var(--line); background: var(--header-bg, var(--paper)); }
.masthead{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: 1.4rem;
}
.site-branding .site-title{ margin: 0; font-family: var(--display); font-size: 1.5rem; letter-spacing: -0.01em; }
.site-branding .site-title a{ color: var(--ink); text-decoration: none; }
.site-branding .site-title a:hover{ color: var(--accent); }
.site-branding .site-tagline{ margin: 2px 0 0; font-family: var(--sans); font-size: 0.82rem; color: var(--muted); }
.custom-logo{ max-height: 46px; width: auto; }

.primary-nav ul{ display: flex; align-items: center; gap: 1.6rem; margin: 0; padding: 0; list-style: none; }
.primary-nav a{ font-family: var(--sans); font-size: 0.82rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); text-decoration: none; }
.primary-nav a:hover,
.primary-nav .current-menu-item > a{ color: var(--accent); }
.nav-toggle{
    display: none;
    background: none;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm, 8px);
    width: 42px; height: 42px;
    font-size: 1.1rem;
    color: var(--ink);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* --- Intro (home / archive head) --- */
.page-intro{ text-align: center; padding-block: clamp(2.5rem, 7vw, 4.5rem) 1rem; }
.page-intro h1{ font-family: var(--display); font-size: clamp(2rem, 5vw, 2.9rem); margin: 0.4rem 0 0; letter-spacing: -0.02em; color: var(--ink); }
.page-intro p{ margin: 0.9rem auto 0; max-width: 34rem; color: var(--ink-soft); }

/* --- Post feed / cards --- */
.post-feed{ padding-block: 1.5rem 3rem; display: grid; gap: clamp(2rem, 4vw, 3rem); }
.post-card{
    min-width: 0;
    background: var(--card-bg, transparent);
    border: 1px solid var(--card-border, transparent);
    border-radius: var(--radius);
    padding: var(--card-pad, 0);
    box-shadow: var(--card-shadow, none);
    transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.post-card:hover{ box-shadow: var(--card-shadow-hover, var(--card-shadow, none)); }
.post-card-media{
    display: block;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 1.4rem;
    aspect-ratio: 16 / 9;
    background: var(--paper-2);
}
.post-card-media img{ width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.post-card-media:hover img{ transform: scale(1.04); }
.post-card-meta{ display: flex; align-items: center; gap: 0.75rem; font-family: var(--sans); font-size: 0.78rem; color: var(--muted); margin-bottom: 0.6rem; }
.post-card-meta .dot{ width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.post-card-title{ font-family: var(--display); font-size: clamp(1.4rem, 3vw, 1.85rem); margin: 0 0 0.6rem; letter-spacing: -0.01em; overflow-wrap: break-word; }
.post-card-title a{ color: var(--ink); text-decoration: none; }
.post-card-title a:hover{ color: var(--accent); }
.post-card-excerpt{ margin: 0 0 1rem; color: var(--ink-soft); }
.read-link{ font-family: var(--sans); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.02em; display: inline-flex; align-items: center; gap: 0.4rem; }
.read-link .arrow{ transition: transform .2s ease; }
.read-link:hover{ text-decoration: none; }
.read-link:hover .arrow{ transform: translateX(4px); }

/* --- Hero (used by hero home layout) --- */
.hero{ padding-block: clamp(1.5rem, 4vw, 2.5rem) 0; }
.hero-card{ position: relative; border-radius: var(--radius); overflow: hidden; min-height: 400px; display: flex; align-items: flex-end; color: #fff; background: var(--ink); }
.hero-card img{ position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-card::after{ content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 25%, rgba(0,0,0,.8) 100%); }
.hero-body{ position: relative; z-index: 2; padding: clamp(1.5rem, 4vw, 2.5rem); max-width: 720px; }
.hero-body .eyebrow{ color: #fff; }
.hero-title{ font-family: var(--display); color: #fff; font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 0.5rem 0; }
.hero-title a{ color: #fff; }
.hero-body .post-card-meta{ color: rgba(255,255,255,.85); }

/* --- Pagination --- */
.pagination{ display: flex; justify-content: center; gap: 0.4rem; padding-bottom: 3.5rem; font-family: var(--sans); }
.pagination .page-numbers{ min-width: 42px; padding: 0.55rem 0.75rem; text-align: center; border: 1px solid var(--line); border-radius: var(--radius-sm, 8px); color: var(--ink-soft); font-size: 0.9rem; text-decoration: none; }
.pagination .page-numbers.current,
.pagination .page-numbers:hover{ background: var(--accent); border-color: var(--accent); color: var(--on-accent, #fff); }

/* --- Two-column home (coral) --- */
.home-grid{ display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: clamp(2rem, 5vw, 4rem); align-items: start; padding-block: 1rem 3.5rem; }
.home-main{ min-width: 0; }
.home-main .post-feed{ padding-block: 0; }
.home-sidebar{ position: sticky; top: 1.5rem; display: grid; gap: clamp(1.75rem, 4vw, 2.5rem); }
.widget{ min-width: 0; }
.widget-title{ font-family: var(--sans); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink); margin: 0 0 1.1rem; padding-bottom: 0.7rem; border-bottom: 2px solid var(--accent); }
.featured-list{ display: grid; gap: 1.15rem; }
.featured-item{ display: flex; gap: 0.9rem; align-items: flex-start; }
.featured-thumb{ flex: none; width: 76px; height: 76px; border-radius: var(--radius-sm, 8px); overflow: hidden; background: var(--paper-2); position: relative; }
.featured-thumb img{ width: 100%; height: 100%; object-fit: cover; }
.featured-rank{ position: absolute; top: 0; left: 0; width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; background: var(--accent); color: var(--on-accent, #fff); font-family: var(--sans); font-size: 0.72rem; font-weight: 600; border-bottom-right-radius: var(--radius-sm, 8px); }
.featured-body{ min-width: 0; }
.featured-item-title{ font-family: var(--display); font-size: 1rem; font-weight: 600; line-height: 1.3; margin: 0; }
.featured-item-title a{ color: var(--ink); text-decoration: none; }
.featured-item-title a:hover{ color: var(--accent); }
.featured-meta{ font-family: var(--sans); font-size: 0.72rem; color: var(--muted); margin-top: 0.35rem; }
.cat-list{ display: grid; margin: 0; padding: 0; list-style: none; }
.cat-list li + li{ border-top: 1px solid var(--line); }
.cat-list a{ display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.65rem 0; font-family: var(--sans); font-size: 0.92rem; color: var(--ink-soft); text-decoration: none; }
.cat-list a:hover{ color: var(--accent); }
.cat-list .cat-count{ font-size: 0.74rem; color: var(--muted); background: var(--paper-2); border-radius: 999px; padding: 0.1rem 0.55rem; }

/* --- Single / page --- */
.entry-header{ text-align: center; padding-block: clamp(2.5rem, 7vw, 4rem) 0; }
.entry-header .entry-title{ font-family: var(--display); font-size: clamp(2rem, 5vw, 3rem); margin: 0.6rem 0 0; letter-spacing: -0.02em; color: var(--ink); overflow-wrap: break-word; }
.entry-meta{ display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.1rem; font-family: var(--sans); font-size: 0.82rem; color: var(--muted); }
.entry-meta .dot{ width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.featured-media{ margin: clamp(2rem, 5vw, 3rem) 0 0; border-radius: var(--radius); overflow: hidden; }

.entry-content{ padding-block: clamp(2rem, 5vw, 2.75rem) 0; font-size: 1.13rem; line-height: 1.9; color: var(--ink-soft); }
.entry-content > * + *{ margin-top: 1.75rem; }
.entry-content p{ margin: 0; }
.entry-content p + p{ margin-top: 1.85rem; }
.entry-content p br{ content: ""; display: block; margin-top: 0.85rem; }
.entry-content h2{ font-family: var(--display); font-size: 1.7rem; margin-top: 2.6rem; color: var(--ink); }
.entry-content h3{ font-family: var(--display); font-size: 1.35rem; margin-top: 2.2rem; color: var(--ink); }
.entry-content a{ text-decoration: underline; text-underline-offset: 3px; }
.entry-content img, .entry-content figure{ border-radius: var(--radius); margin-block: 2rem; }
.entry-content ul, .entry-content ol{ padding-left: 1.3rem; }
.entry-content ul li{ list-style: disc; }
.entry-content ol li{ list-style: decimal; }
.entry-content li + li{ margin-top: 0.5rem; }
.entry-content blockquote{ margin: 2rem 0; padding: 0.4rem 0 0.4rem 1.4rem; border-left: 3px solid var(--accent); font-family: var(--display); font-style: italic; font-size: 1.3rem; color: var(--ink); }
.entry-content code{ background: var(--paper-2); padding: 0.15em 0.4em; border-radius: 5px; font-size: 0.9em; }
.entry-content pre{ background: var(--ink); color: var(--paper); padding: 1.2rem 1.4rem; border-radius: var(--radius); overflow-x: auto; font-size: 0.92rem; line-height: 1.6; }
.entry-content pre code{ background: none; padding: 0; }
.entry-content hr{ border: none; border-top: 1px solid var(--line); margin: 2.5rem 0; }

/* --- Content tables --- */
.entry-content .table-scroll{
    margin-block: 2rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm, 8px);
    background: var(--paper);
}
.entry-content table{
    width: 100%;
    min-width: 34rem;
    margin: 0;
    border-collapse: collapse;
    font-family: var(--sans);
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--ink);
}
/* Standalone table (JS wrapper not applied) still looks framed. */
.entry-content > table{
    margin-block: 2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm, 8px);
    overflow: hidden;
}
.entry-content thead th{
    background: var(--paper-2);
    font-family: var(--display);
    font-weight: 700;
    font-size: 0.76rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--ink);
    text-align: left;
    padding: 0.85rem 1.1rem;
    border-bottom: 2px solid var(--accent);
    white-space: nowrap;
    vertical-align: bottom;
}
.entry-content th, .entry-content td{
    padding: 0.78rem 1.1rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: middle;
}
.entry-content tbody tr:nth-child(even){
    background: var(--paper-2);
    background: color-mix(in srgb, var(--paper-2) 55%, transparent);
}
.entry-content tbody tr:hover{
    background: var(--accent-soft);
}
.entry-content tbody tr:last-child td{ border-bottom: none; }
/* First column reads as a row label. */
.entry-content tbody th[scope="row"],
.entry-content tbody td:first-child{ font-weight: 600; color: var(--ink); }
/* Numeric-looking cells align tidily. */
.entry-content td + td{ font-variant-numeric: tabular-nums; }
.entry-content table caption{
    caption-side: bottom;
    font-size: 0.8rem;
    color: var(--muted);
    padding: 0.7rem 0.2rem 0;
    text-align: left;
}

.entry-tags{ display: flex; flex-wrap: wrap; gap: 0.5rem; padding-block: 2.25rem; margin-top: 2rem; border-top: 1px solid var(--line); }
.entry-tags a{ font-family: var(--sans); font-size: 0.78rem; color: var(--ink-soft); background: var(--paper-2); padding: 0.35rem 0.8rem; border-radius: 999px; text-decoration: none; }
.entry-tags a:hover{ background: var(--accent); color: var(--on-accent, #fff); }

.post-nav{ display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding-block: 2rem; border-top: 1px solid var(--line); font-family: var(--sans); }
.post-nav a{ color: var(--ink); text-decoration: none; }
.post-nav .nav-label{ font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.post-nav .nav-title{ font-family: var(--display); font-weight: 600; margin-top: 0.3rem; display: block; }
.post-nav a:hover .nav-title{ color: var(--accent); }
.post-nav .next{ text-align: right; }

.author-card{ display: flex; gap: 1.1rem; align-items: flex-start; padding: 1.5rem; background: var(--paper-2); border-radius: var(--radius); margin-block: 2.5rem; }
.author-card img{ width: 56px; height: 56px; border-radius: 50%; flex: none; }
.author-card .author-name{ font-family: var(--display); font-weight: 600; color: var(--ink); }
.author-card .author-bio{ font-size: 0.92rem; color: var(--ink-soft); margin-top: 0.2rem; }

/* --- Comments --- */
.comments-area{ padding-block: 1rem 3rem; }
.comments-title{ font-family: var(--display); font-size: 1.5rem; margin-bottom: 1.6rem; color: var(--ink); }
.comment-list{ list-style: none; margin: 0 0 2.5rem; padding: 0; }
.comment-list ul.children{ list-style: none; margin-left: 1.5rem; padding-left: 1rem; border-left: 1px solid var(--line); }
.comment-body{ padding: 1.1rem 0; }
.comment-meta{ display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.5rem; }
.comment-meta img{ width: 40px; height: 40px; border-radius: 50%; }
.comment-meta .fn{ font-weight: 600; font-style: normal; color: var(--ink); font-family: var(--sans); font-size: 0.92rem; }
.comment-meta .comment-date{ font-size: 0.76rem; color: var(--muted); font-family: var(--sans); }
.comment-content{ color: var(--ink-soft); font-size: 0.98rem; }
.comment-content p{ margin: 0 0 0.6rem; }
.comment .reply a{ font-family: var(--sans); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; }
.comment-respond{ background: var(--paper-2); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.25rem); }
.comment-reply-title{ font-family: var(--display); font-size: 1.35rem; margin: 0 0 0.4rem; color: var(--ink); }
.comment-notes, .logged-in-as{ font-family: var(--sans); font-size: 0.85rem; color: var(--muted); margin: 0 0 1.4rem; }
.comment-form p{ margin: 0 0 1.1rem; }
.comment-form label{ display: block; font-family: var(--sans); font-size: 0.8rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--ink); }
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea{ width: 100%; font-family: var(--sans); font-size: 1rem; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm, 8px); padding: 0.7rem 0.85rem; }
.comment-form input:focus, .comment-form textarea:focus{ outline: none; border-color: var(--accent); }
.comment-form textarea{ min-height: 130px; resize: vertical; }
.comment-form .form-submit{ margin-bottom: 0; }
.comment-form .submit{ font-family: var(--sans); font-size: 0.85rem; font-weight: 600; background: var(--accent); color: var(--on-accent, #fff); border: none; border-radius: var(--radius-sm, 8px); padding: 0.75rem 1.6rem; cursor: pointer; transition: filter .2s ease; }
.comment-form .submit:hover{ filter: brightness(0.92); }

/* --- States / 404 --- */
.state-empty{ text-align: center; padding-block: clamp(3.5rem, 10vw, 7rem); }
.state-empty h1{ font-family: var(--display); font-size: clamp(3rem, 12vw, 6rem); color: var(--accent); margin: 0; }
.state-empty p{ color: var(--ink-soft); margin: 0.6rem 0 1.6rem; }
.btn{ display: inline-block; font-family: var(--sans); font-size: 0.85rem; font-weight: 600; background: var(--accent); color: var(--on-accent, #fff); padding: 0.75rem 1.6rem; border-radius: var(--radius-sm, 8px); text-decoration: none; }
.btn:hover{ filter: brightness(0.92); text-decoration: none; color: var(--on-accent, #fff); }

/* --- Search form --- */
.search-form{ display: flex; gap: 0.5rem; }
.search-form input[type="search"]{ flex: 1; font-family: var(--sans); font-size: 1rem; padding: 0.7rem 0.9rem; border: 1px solid var(--line); border-radius: var(--radius-sm, 8px); background: var(--paper); color: var(--ink); }
.search-form input[type="search"]:focus{ outline: none; border-color: var(--accent); }
.search-form button{ background: var(--accent); color: var(--on-accent, #fff); border: none; border-radius: var(--radius-sm, 8px); padding: 0 1.1rem; cursor: pointer; }

/* --- Footer --- */
.site-footer{ border-top: 1px solid var(--line); padding-block: 2.5rem; margin-top: 2rem; background: var(--footer-bg, transparent); }
.footer-inner{ display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-family: var(--sans); font-size: 0.82rem; color: var(--muted); }
.footer-inner strong{ color: var(--ink); }
.footer-copyright{ color: var(--ink-soft); }

.to-top{ position: fixed; right: 1.5rem; bottom: 1.5rem; width: 44px; height: 44px; display: none; align-items: center; justify-content: center; background: var(--accent); color: var(--on-accent, #fff); border: none; border-radius: var(--radius-sm, 8px); cursor: pointer; opacity: 0.95; z-index: 90; }
.to-top:hover{ filter: brightness(0.92); }
.to-top.show{ display: flex; }

/* --- Responsive --- */
@media (max-width: 1024px){
    .home-grid{ grid-template-columns: 1fr; }
    .home-sidebar{ position: static; }
}
@media (max-width: 640px){
    .nav-toggle{ display: inline-flex; position: relative; z-index: 130; }
    .primary-nav{ position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px); background: var(--paper); border-left: 1px solid var(--line); box-shadow: -12px 0 40px rgba(0,0,0,.18); transform: translateX(100%); transition: transform .28s ease; padding: 5rem 2rem 2rem; z-index: 120; overflow-y: auto; }
    .primary-nav.open{ transform: translateX(0); }
    body.nav-open{ overflow: hidden; }
    .primary-nav ul{ flex-direction: column; align-items: flex-start; gap: 1.2rem; }
    .primary-nav a{ font-size: 1rem; }
    .post-nav{ grid-template-columns: 1fr; }
    .post-nav .next{ text-align: left; }
}

/* --- Mobile hardening (all variants) --- */
html, body{ overflow-x: hidden; max-width: 100%; }
.entry-content img, .entry-content iframe, .entry-content video, .entry-content table{ max-width: 100%; }
.entry-content{ overflow-wrap: break-word; }
.featured-item-title, .card-title, .hero-title, .comments-title{ overflow-wrap: break-word; }
@media (max-width: 520px){
    .wrap{ padding-inline: 1.15rem; }
    .masthead{ padding-block: 1.1rem; }
    .site-branding .site-title{ font-size: 1.3rem; }
    .entry-content{ font-size: 1.05rem; }
    .comment-list ul.children{ margin-left: 0.75rem; padding-left: 0.75rem; }
    .to-top{ right: 1rem; bottom: 1rem; }
}
/* --- Mint personality --- */
body{ background: linear-gradient(180deg, var(--paper-2), var(--paper) 260px); }
.post-feed{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.post-card{ transition: transform .25s ease, box-shadow .25s ease; }
.post-card:hover{ transform: translateY(-4px); }
.post-card-media{ border-radius: 12px; aspect-ratio: 3 / 2; }
.post-card-meta .eyebrow{ background: var(--accent-soft); color: var(--accent); padding: 0.22rem 0.6rem; border-radius: 999px; text-transform: none; letter-spacing: 0; font-weight: 700; }
.post-card-meta .eyebrow + .dot{ display: none; }
.pagination .page-numbers{ border-radius: 999px; }
@media (max-width: 940px){ .post-feed{ grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px){ .post-feed{ grid-template-columns: 1fr; } }