/*
Theme Name: PostBlogHub
Theme URI: https://postbloghub.com
Author: PostBlogHub
Author URI: https://postbloghub.com
Description: PostBlogHub is a vivid, modern WordPress blog theme — built for publishers who want a bold, magazine-style homepage, gradient hero, frictionless reading, and a FAQ + About page out of the box. Fully responsive, accessible, and tuned for speed.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lumen
Tags: blog, magazine, one-column, two-columns, right-sidebar, custom-colors, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, block-styles, wide-blocks, accessibility-ready
*/

/* =========================================================
   Lumen — Table of Contents
   1. CSS Custom Properties (Design Tokens)
   2. Reset & Base
   3. Typography
   4. Layout & Containers
   5. Header & Navigation
   6. Hero / Featured
   7. Post Cards & Archive
   8. Single Post
   9. Sidebar & Widgets
   10. Comments
   11. Forms & Buttons
   12. Pagination
   13. Footer
   14. Animations & Transitions
   15. Utility / Accessibility
   16. Responsive Breakpoints
   ========================================================= */

/* 1. Design Tokens ---------------------------------------- */
:root {
    --lumen-color-bg: #ffffff;
    --lumen-color-surface: #f8fafc;
    --lumen-color-surface-2: #f1f5f9;
    --lumen-color-border: #e2e8f0;
    --lumen-color-text: #0f172a;
    --lumen-color-muted: #64748b;
    --lumen-color-accent: #6366f1;
    --lumen-color-accent-hover: #4f46e5;
    --lumen-color-secondary: #ec4899;
    --lumen-color-tertiary: #f59e0b;
    --lumen-color-success: #10b981;
    --lumen-color-link: var(--lumen-color-accent);
    --lumen-color-tag-bg: #eef2ff;
    --lumen-color-tag-text: #4338ca;
    --lumen-gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 45%, #ec4899 100%);
    --lumen-gradient-soft: linear-gradient(135deg, #eef2ff 0%, #fdf2f8 100%);
    --lumen-gradient-btn: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --lumen-gradient-accent-line: linear-gradient(90deg, #6366f1 0%, #ec4899 50%, #f59e0b 100%);

    --lumen-font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --lumen-font-serif: "Source Serif Pro", "Iowan Old Style", "Apple Garamond", Georgia, serif;
    --lumen-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

    --lumen-fs-xs: 0.8125rem;
    --lumen-fs-sm: 0.9375rem;
    --lumen-fs-base: 1.0625rem;
    --lumen-fs-md: 1.1875rem;
    --lumen-fs-lg: 1.5rem;
    --lumen-fs-xl: 2rem;
    --lumen-fs-2xl: 2.75rem;
    --lumen-fs-3xl: 3.5rem;

    --lumen-lh-tight: 1.2;
    --lumen-lh-snug: 1.4;
    --lumen-lh-normal: 1.6;
    --lumen-lh-loose: 1.8;

    --lumen-space-1: 0.25rem;
    --lumen-space-2: 0.5rem;
    --lumen-space-3: 0.75rem;
    --lumen-space-4: 1rem;
    --lumen-space-5: 1.5rem;
    --lumen-space-6: 2rem;
    --lumen-space-7: 3rem;
    --lumen-space-8: 4rem;
    --lumen-space-9: 6rem;

    --lumen-radius-sm: 4px;
    --lumen-radius-md: 8px;
    --lumen-radius-lg: 16px;
    --lumen-radius-pill: 999px;

    --lumen-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
    --lumen-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.04);
    --lumen-shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, 0.18);

    --lumen-container: 1200px;
    --lumen-container-narrow: 720px;

    --lumen-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --lumen-dur-fast: 180ms;
    --lumen-dur-base: 280ms;
    --lumen-dur-slow: 520ms;
}

@media (prefers-color-scheme: dark) {
    :root[data-lumen-auto-dark="1"] {
        --lumen-color-bg: #0b1020;
        --lumen-color-surface: #131a32;
        --lumen-color-surface-2: #1a2244;
        --lumen-color-border: #232c4d;
        --lumen-color-text: #e2e8f0;
        --lumen-color-muted: #94a3b8;
        --lumen-color-accent: #818cf8;
        --lumen-color-accent-hover: #a78bfa;
        --lumen-color-tag-bg: #1e1b4b;
        --lumen-color-tag-text: #c7d2fe;
        --lumen-gradient-soft: linear-gradient(135deg, #1e1b4b 0%, #3b0764 100%);
    }
}

/* 2. Reset & Base ----------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--lumen-color-bg);
    color: var(--lumen-color-text);
    font-family: var(--lumen-font-sans);
    font-size: var(--lumen-fs-base);
    line-height: var(--lumen-lh-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

img { border-style: none; }

a {
    color: var(--lumen-color-link);
    text-decoration: none;
    transition: color var(--lumen-dur-fast) var(--lumen-ease);
}

a:hover, a:focus { color: var(--lumen-color-accent-hover); }
a:focus-visible {
    outline: 2px solid var(--lumen-color-accent);
    outline-offset: 3px;
    border-radius: var(--lumen-radius-sm);
}

hr {
    border: 0;
    border-top: 1px solid var(--lumen-color-border);
    margin: var(--lumen-space-7) 0;
}

::selection { background: var(--lumen-color-accent); color: #fff; }

/* 3. Typography ------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--lumen-font-serif);
    line-height: var(--lumen-lh-tight);
    margin: 0 0 var(--lumen-space-4);
    color: var(--lumen-color-text);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h1 { font-size: var(--lumen-fs-2xl); }
h2 { font-size: var(--lumen-fs-xl); }
h3 { font-size: var(--lumen-fs-lg); }
h4 { font-size: var(--lumen-fs-md); }
h5 { font-size: var(--lumen-fs-base); }
h6 { font-size: var(--lumen-fs-sm); text-transform: uppercase; letter-spacing: 0.06em; }

p { margin: 0 0 var(--lumen-space-5); }

blockquote {
    margin: var(--lumen-space-6) 0;
    padding: var(--lumen-space-4) var(--lumen-space-6);
    border-left: 4px solid var(--lumen-color-accent);
    background: var(--lumen-color-surface);
    font-family: var(--lumen-font-serif);
    font-size: var(--lumen-fs-md);
    font-style: italic;
    border-radius: 0 var(--lumen-radius-md) var(--lumen-radius-md) 0;
}

blockquote p:last-child { margin-bottom: 0; }

code, kbd, pre, samp {
    font-family: var(--lumen-font-mono);
    font-size: 0.92em;
}

code {
    background: var(--lumen-color-surface);
    padding: 0.15em 0.4em;
    border-radius: var(--lumen-radius-sm);
    border: 1px solid var(--lumen-color-border);
}

pre {
    background: var(--lumen-color-surface);
    padding: var(--lumen-space-5);
    border-radius: var(--lumen-radius-md);
    overflow-x: auto;
    border: 1px solid var(--lumen-color-border);
    line-height: var(--lumen-lh-snug);
}

pre code { background: none; border: none; padding: 0; }

ul, ol { padding-left: 1.5rem; margin: 0 0 var(--lumen-space-5); }
li + li { margin-top: var(--lumen-space-2); }

/* 4. Layout ----------------------------------------------- */
.lumen-container {
    width: 100%;
    max-width: var(--lumen-container);
    margin: 0 auto;
    padding: 0 var(--lumen-space-5);
}

.lumen-container--narrow { max-width: var(--lumen-container-narrow); }

.lumen-site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.lumen-site-content {
    flex: 1;
    padding: var(--lumen-space-7) 0;
}

.lumen-content-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: var(--lumen-space-7);
    align-items: start;
}

.lumen-content-wrap--full { grid-template-columns: minmax(0, 1fr); }

/* 5. Header & Navigation ---------------------------------- */
.lumen-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--lumen-dur-base) var(--lumen-ease),
                background var(--lumen-dur-base) var(--lumen-ease),
                box-shadow var(--lumen-dur-base) var(--lumen-ease);
}

.lumen-header::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 3px;
    background: var(--lumen-gradient-accent-line);
    background-size: 200% 100%;
    animation: lumen-gradient-shift 14s ease infinite;
}

.lumen-header.is-scrolled {
    border-bottom-color: var(--lumen-color-border);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

@keyframes lumen-gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.lumen-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--lumen-space-5);
    padding: var(--lumen-space-4) var(--lumen-space-5);
    max-width: var(--lumen-container);
    margin: 0 auto;
}

.lumen-branding { display: flex; align-items: center; gap: var(--lumen-space-3); min-width: 0; }

.lumen-site-title {
    margin: 0;
    font-size: var(--lumen-fs-md);
    font-weight: 700;
    letter-spacing: -0.01em;
    font-family: var(--lumen-font-serif);
}
.lumen-site-title a { color: var(--lumen-color-text); }
.lumen-site-title a:hover { color: var(--lumen-color-accent); }

.lumen-site-description {
    margin: 0;
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-xs);
}

.lumen-custom-logo-link img { max-height: 44px; width: auto; }

.lumen-primary-nav { display: flex; align-items: center; gap: var(--lumen-space-3); }

.lumen-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--lumen-space-2);
}

.lumen-menu li { margin: 0; position: relative; }

.lumen-menu a {
    display: inline-block;
    padding: var(--lumen-space-2) var(--lumen-space-3);
    color: var(--lumen-color-text);
    font-size: var(--lumen-fs-sm);
    font-weight: 500;
    border-radius: var(--lumen-radius-sm);
    position: relative;
    transition: color var(--lumen-dur-fast) var(--lumen-ease),
                background var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-menu a::after {
    content: '';
    position: absolute;
    left: var(--lumen-space-3);
    right: var(--lumen-space-3);
    bottom: 4px;
    height: 2px;
    background: var(--lumen-color-accent);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--lumen-dur-base) var(--lumen-ease);
    border-radius: 1px;
}

.lumen-menu a:hover, .lumen-menu .current-menu-item > a { color: var(--lumen-color-accent); }
.lumen-menu a:hover::after, .lumen-menu .current-menu-item > a::after { transform: scaleX(1); }

.lumen-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    list-style: none;
    margin: 0;
    padding: var(--lumen-space-2);
    background: var(--lumen-color-bg);
    border: 1px solid var(--lumen-color-border);
    border-radius: var(--lumen-radius-md);
    box-shadow: var(--lumen-shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--lumen-dur-fast) var(--lumen-ease),
                transform var(--lumen-dur-fast) var(--lumen-ease),
                visibility var(--lumen-dur-fast);
}

.lumen-menu li:hover > .sub-menu,
.lumen-menu li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lumen-menu .sub-menu a { display: block; }
.lumen-menu .sub-menu a::after { display: none; }

.lumen-menu-toggle {
    display: none;
    background: none;
    border: 0;
    width: 44px;
    height: 44px;
    cursor: pointer;
    padding: 0;
    color: inherit;
    border-radius: var(--lumen-radius-sm);
}

.lumen-menu-toggle:hover { background: var(--lumen-color-surface); }

.lumen-menu-toggle .lumen-burger {
    display: block;
    width: 22px;
    height: 2px;
    background: currentColor;
    margin: 0 auto;
    position: relative;
    transition: background var(--lumen-dur-fast);
}

.lumen-menu-toggle .lumen-burger::before,
.lumen-menu-toggle .lumen-burger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background: currentColor;
    transition: transform var(--lumen-dur-base) var(--lumen-ease),
                top var(--lumen-dur-base) var(--lumen-ease);
}

.lumen-menu-toggle .lumen-burger::before { top: -7px; }
.lumen-menu-toggle .lumen-burger::after { top: 7px; }

.lumen-menu-toggle[aria-expanded="true"] .lumen-burger { background: transparent; }
.lumen-menu-toggle[aria-expanded="true"] .lumen-burger::before { top: 0; transform: rotate(45deg); }
.lumen-menu-toggle[aria-expanded="true"] .lumen-burger::after { top: 0; transform: rotate(-45deg); }

.lumen-search-toggle {
    background: none;
    border: 0;
    width: 40px;
    height: 40px;
    border-radius: var(--lumen-radius-pill);
    cursor: pointer;
    color: var(--lumen-color-text);
    transition: background var(--lumen-dur-fast) var(--lumen-ease);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.lumen-search-toggle:hover { background: var(--lumen-color-surface); color: var(--lumen-color-accent); }

.lumen-search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 17, 21, 0.55);
    backdrop-filter: blur(6px);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 12vh var(--lumen-space-5) var(--lumen-space-5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--lumen-dur-base) var(--lumen-ease),
                visibility var(--lumen-dur-base);
}
.lumen-search-overlay.is-open { opacity: 1; visibility: visible; }

.lumen-search-overlay form { width: 100%; max-width: 600px; }
.lumen-search-overlay input[type="search"] {
    width: 100%;
    padding: var(--lumen-space-5);
    font-size: var(--lumen-fs-lg);
    border: 0;
    border-radius: var(--lumen-radius-md);
    box-shadow: var(--lumen-shadow-lg);
    background: var(--lumen-color-bg);
    color: var(--lumen-color-text);
}

/* 6. Hero / Featured -------------------------------------- */
.lumen-hero {
    position: relative;
    padding: var(--lumen-space-9) var(--lumen-space-5) var(--lumen-space-8);
    text-align: center;
    color: #fff;
    border-radius: var(--lumen-radius-lg);
    margin: var(--lumen-space-6) 0 var(--lumen-space-7);
    overflow: hidden;
    background: var(--lumen-gradient-hero);
    background-size: 200% 200%;
    animation: lumen-gradient-shift 18s ease infinite;
}

.lumen-hero::before,
.lumen-hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
    pointer-events: none;
}
.lumen-hero::before {
    width: 360px; height: 360px;
    background: #f59e0b;
    top: -120px; left: -120px;
}
.lumen-hero::after {
    width: 320px; height: 320px;
    background: #06b6d4;
    bottom: -120px; right: -120px;
}

.lumen-hero > * { position: relative; z-index: 1; }

.lumen-hero .lumen-eyebrow {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--lumen-radius-pill);
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.28);
    color: #fff;
    font-size: var(--lumen-fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: var(--lumen-space-4);
    backdrop-filter: blur(8px);
}

.lumen-hero h1 {
    font-size: clamp(2.25rem, 5.5vw, var(--lumen-fs-3xl));
    margin-bottom: var(--lumen-space-4);
    color: #fff;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.18);
}

.lumen-hero h1 .lumen-hero-accent {
    background: linear-gradient(135deg, #fde047 0%, #fbbf24 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.lumen-hero p {
    max-width: 640px;
    margin: 0 auto var(--lumen-space-5);
    color: rgba(255, 255, 255, 0.92);
    font-size: var(--lumen-fs-md);
}

.lumen-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lumen-space-3);
    justify-content: center;
    margin-top: var(--lumen-space-5);
}

.lumen-hero-actions .lumen-btn {
    background: #fff;
    color: var(--lumen-color-accent-hover);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
}

.lumen-hero-actions .lumen-btn:hover {
    background: #fff;
    color: var(--lumen-color-accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.18);
}

.lumen-hero-actions .lumen-btn--ghost {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
}
.lumen-hero-actions .lumen-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.lumen-featured-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--lumen-space-5);
    margin-bottom: var(--lumen-space-8);
}

.lumen-featured-grid .lumen-featured-primary { grid-column: span 7; }
.lumen-featured-grid .lumen-featured-secondary { grid-column: span 5; display: grid; gap: var(--lumen-space-5); }

.lumen-featured-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--lumen-radius-lg);
    background: var(--lumen-color-surface);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: flex-end;
}

.lumen-featured-card--small { aspect-ratio: 16 / 9; }

.lumen-featured-card .lumen-thumb {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--lumen-dur-slow) var(--lumen-ease);
}

.lumen-featured-card:hover .lumen-thumb { transform: scale(1.05); }

.lumen-featured-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
}

.lumen-featured-content {
    position: relative;
    z-index: 1;
    padding: var(--lumen-space-6);
    color: #fff;
}

.lumen-featured-content h2,
.lumen-featured-content h3 { color: #fff; margin-bottom: var(--lumen-space-2); }
.lumen-featured-content h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
.lumen-featured-content a { color: #fff; }
.lumen-featured-content .lumen-meta { color: rgba(255,255,255,0.85); }

/* 7. Post Cards & Archive --------------------------------- */
.lumen-archive-header {
    margin-bottom: var(--lumen-space-7);
    padding-bottom: var(--lumen-space-5);
    border-bottom: 1px solid var(--lumen-color-border);
}

.lumen-archive-header .lumen-archive-title {
    font-size: var(--lumen-fs-2xl);
    margin-bottom: var(--lumen-space-2);
}

.lumen-archive-header p { color: var(--lumen-color-muted); margin: 0; }

.lumen-post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--lumen-space-6);
}

.lumen-post-card {
    background: var(--lumen-color-bg);
    border-radius: var(--lumen-radius-lg);
    overflow: hidden;
    transition: transform var(--lumen-dur-base) var(--lumen-ease),
                box-shadow var(--lumen-dur-base) var(--lumen-ease);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--lumen-color-border);
}

.lumen-post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lumen-shadow-lg);
}

.lumen-post-card .lumen-card-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--lumen-color-surface);
}

.lumen-post-card .lumen-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--lumen-dur-slow) var(--lumen-ease);
}

.lumen-post-card:hover .lumen-card-thumb img { transform: scale(1.06); }

.lumen-post-card .lumen-card-body {
    padding: var(--lumen-space-5) var(--lumen-space-5) var(--lumen-space-5);
    display: flex;
    flex-direction: column;
    gap: var(--lumen-space-3);
    flex: 1;
}

.lumen-post-card h2,
.lumen-post-card h3 {
    font-size: var(--lumen-fs-lg);
    margin: 0;
    line-height: var(--lumen-lh-snug);
}

.lumen-post-card h2 a,
.lumen-post-card h3 a { color: var(--lumen-color-text); }
.lumen-post-card h2 a:hover,
.lumen-post-card h3 a:hover { color: var(--lumen-color-accent); }

.lumen-post-card .lumen-excerpt {
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-sm);
    line-height: var(--lumen-lh-normal);
    margin: 0;
}

.lumen-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lumen-space-3);
    align-items: center;
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-xs);
}

.lumen-meta a { color: inherit; }
.lumen-meta a:hover { color: var(--lumen-color-accent); }

.lumen-meta .lumen-meta-sep {
    width: 3px; height: 3px;
    background: currentColor;
    border-radius: 50%;
    opacity: 0.5;
}

.lumen-category-pill {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--lumen-radius-pill);
    background: var(--lumen-color-tag-bg);
    color: var(--lumen-color-tag-text);
    font-size: var(--lumen-fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: all var(--lumen-dur-fast) var(--lumen-ease);
}
.lumen-category-pill:hover {
    background: var(--lumen-gradient-btn);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Rotating accent colors for category pills */
.lumen-post-grid > *:nth-child(6n+2) .lumen-category-pill { background: #fce7f3; color: #be185d; }
.lumen-post-grid > *:nth-child(6n+3) .lumen-category-pill { background: #fef3c7; color: #b45309; }
.lumen-post-grid > *:nth-child(6n+4) .lumen-category-pill { background: #d1fae5; color: #047857; }
.lumen-post-grid > *:nth-child(6n+5) .lumen-category-pill { background: #cffafe; color: #0e7490; }
.lumen-post-grid > *:nth-child(6n+6) .lumen-category-pill { background: #fee2e2; color: #b91c1c; }

/* 8. Single Post ------------------------------------------ */
.lumen-single {
    max-width: var(--lumen-container-narrow);
    margin: 0 auto;
}

.lumen-single-header {
    text-align: center;
    margin-bottom: var(--lumen-space-7);
    padding-bottom: var(--lumen-space-6);
    border-bottom: 1px solid var(--lumen-color-border);
}

.lumen-single-header .entry-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    margin-bottom: var(--lumen-space-4);
    line-height: var(--lumen-lh-tight);
}

.lumen-single-header .lumen-meta { justify-content: center; }

.lumen-featured-image {
    margin: 0 calc(50% - 50vw) var(--lumen-space-7);
    max-width: 100vw;
    text-align: center;
}

.lumen-featured-image img {
    max-width: var(--lumen-container);
    width: 100%;
    margin: 0 auto;
    border-radius: 0;
}

@media (min-width: 768px) {
    .lumen-featured-image img { border-radius: var(--lumen-radius-lg); }
}

.lumen-entry-content {
    font-family: var(--lumen-font-serif);
    font-size: var(--lumen-fs-md);
    line-height: var(--lumen-lh-loose);
}

.lumen-entry-content > * { max-width: 100%; }

.lumen-entry-content h2 { font-size: var(--lumen-fs-xl); margin-top: var(--lumen-space-7); }
.lumen-entry-content h3 { font-size: var(--lumen-fs-lg); margin-top: var(--lumen-space-6); }

.lumen-entry-content img,
.lumen-entry-content figure {
    margin: var(--lumen-space-6) auto;
    border-radius: var(--lumen-radius-md);
}

.lumen-entry-content figure figcaption {
    text-align: center;
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-sm);
    font-family: var(--lumen-font-sans);
    margin-top: var(--lumen-space-2);
}

.lumen-entry-content a {
    text-decoration: underline;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

.lumen-entry-footer {
    margin-top: var(--lumen-space-7);
    padding-top: var(--lumen-space-5);
    border-top: 1px solid var(--lumen-color-border);
    display: flex;
    flex-wrap: wrap;
    gap: var(--lumen-space-4);
    align-items: center;
    justify-content: space-between;
}

.lumen-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lumen-space-2);
    list-style: none;
    padding: 0;
    margin: 0;
}

.lumen-tags li { margin: 0; }

.lumen-tags a {
    display: inline-block;
    padding: 4px var(--lumen-space-3);
    background: var(--lumen-color-surface);
    color: var(--lumen-color-muted);
    border-radius: var(--lumen-radius-pill);
    font-size: var(--lumen-fs-xs);
    border: 1px solid var(--lumen-color-border);
    transition: all var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-tags a:hover {
    background: var(--lumen-color-accent);
    color: #fff;
    border-color: var(--lumen-color-accent);
}

.lumen-share {
    display: flex;
    gap: var(--lumen-space-2);
    align-items: center;
    margin: var(--lumen-space-7) 0;
}

.lumen-share-label {
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--lumen-color-muted);
    margin-right: var(--lumen-space-2);
}

.lumen-share a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--lumen-color-surface);
    color: var(--lumen-color-text);
    border: 1px solid var(--lumen-color-border);
    transition: transform var(--lumen-dur-fast) var(--lumen-ease),
                background var(--lumen-dur-fast) var(--lumen-ease),
                color var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-share a:hover {
    background: var(--lumen-color-accent);
    color: #fff;
    border-color: var(--lumen-color-accent);
    transform: translateY(-2px);
}

.lumen-share svg { width: 18px; height: 18px; }

.lumen-author-box {
    display: flex;
    gap: var(--lumen-space-5);
    align-items: flex-start;
    padding: var(--lumen-space-6);
    background: var(--lumen-color-surface);
    border-radius: var(--lumen-radius-lg);
    margin: var(--lumen-space-7) 0;
}

.lumen-author-box img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    flex-shrink: 0;
}

.lumen-author-box h3 { margin: 0 0 var(--lumen-space-2); font-size: var(--lumen-fs-md); }
.lumen-author-box p { margin: 0; color: var(--lumen-color-muted); font-size: var(--lumen-fs-sm); }

.lumen-related {
    margin-top: var(--lumen-space-8);
    padding-top: var(--lumen-space-7);
    border-top: 1px solid var(--lumen-color-border);
}

.lumen-related h2 {
    text-align: center;
    margin-bottom: var(--lumen-space-6);
    font-size: var(--lumen-fs-xl);
}

.lumen-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--lumen-space-4);
    margin: var(--lumen-space-7) 0;
}

.lumen-post-nav a {
    display: block;
    padding: var(--lumen-space-5);
    background: var(--lumen-color-surface);
    border: 1px solid var(--lumen-color-border);
    border-radius: var(--lumen-radius-md);
    color: var(--lumen-color-text);
    transition: transform var(--lumen-dur-fast) var(--lumen-ease),
                box-shadow var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-post-nav a:hover { transform: translateY(-2px); box-shadow: var(--lumen-shadow-md); }

.lumen-post-nav .lumen-nav-label {
    display: block;
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--lumen-color-muted);
    margin-bottom: var(--lumen-space-2);
}

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

/* 9. Sidebar & Widgets ------------------------------------ */
.lumen-sidebar { font-size: var(--lumen-fs-sm); }

.lumen-widget {
    margin-bottom: var(--lumen-space-7);
    padding-bottom: var(--lumen-space-6);
    border-bottom: 1px solid var(--lumen-color-border);
}

.lumen-widget:last-child { border-bottom: 0; }

.lumen-widget .widget-title {
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--lumen-space-4);
    color: var(--lumen-color-muted);
    font-family: var(--lumen-font-sans);
}

.lumen-widget ul { list-style: none; padding: 0; margin: 0; }
.lumen-widget ul li {
    padding: var(--lumen-space-2) 0;
    border-bottom: 1px solid var(--lumen-color-border);
    margin: 0;
}
.lumen-widget ul li:last-child { border-bottom: 0; }
.lumen-widget ul li a { color: var(--lumen-color-text); }
.lumen-widget ul li a:hover { color: var(--lumen-color-accent); }

/* 10. Comments -------------------------------------------- */
.lumen-comments {
    margin-top: var(--lumen-space-8);
    padding-top: var(--lumen-space-7);
    border-top: 1px solid var(--lumen-color-border);
}

.lumen-comments .comments-title {
    font-size: var(--lumen-fs-xl);
    margin-bottom: var(--lumen-space-6);
}

.lumen-comment-list { list-style: none; padding: 0; margin: 0 0 var(--lumen-space-7); }
.lumen-comment-list .children { list-style: none; padding-left: var(--lumen-space-6); margin-top: var(--lumen-space-5); }

.lumen-comment-list .comment {
    padding: var(--lumen-space-5) 0;
    border-bottom: 1px solid var(--lumen-color-border);
    margin: 0;
}

.lumen-comment-list .comment-body {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: var(--lumen-space-4);
}

.lumen-comment-list .avatar {
    border-radius: 50%;
    width: 56px;
    height: 56px;
}

.lumen-comment-list .comment-meta {
    margin-bottom: var(--lumen-space-3);
    font-size: var(--lumen-fs-sm);
}

.lumen-comment-list .comment-meta .fn { font-weight: 600; color: var(--lumen-color-text); }
.lumen-comment-list .comment-meta .says { display: none; }

.lumen-comment-list .comment-metadata { color: var(--lumen-color-muted); font-size: var(--lumen-fs-xs); }

.lumen-comment-list .reply { margin-top: var(--lumen-space-3); }
.lumen-comment-list .reply a {
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

.comment-respond {
    background: var(--lumen-color-surface);
    padding: var(--lumen-space-6);
    border-radius: var(--lumen-radius-lg);
    margin-top: var(--lumen-space-6);
}

.comment-respond .comment-reply-title { font-size: var(--lumen-fs-lg); margin-bottom: var(--lumen-space-2); }
.comment-respond .comment-notes { color: var(--lumen-color-muted); font-size: var(--lumen-fs-sm); margin-bottom: var(--lumen-space-5); }

.comment-form { display: grid; gap: var(--lumen-space-4); }
.comment-form-author, .comment-form-email, .comment-form-url { display: block; }
.comment-form label {
    display: block;
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--lumen-color-muted);
    margin-bottom: var(--lumen-space-2);
}

/* 11. Forms & Buttons ------------------------------------- */
input[type="text"], input[type="email"], input[type="url"],
input[type="password"], input[type="search"], input[type="number"],
input[type="tel"], textarea, select {
    width: 100%;
    padding: var(--lumen-space-3) var(--lumen-space-4);
    border: 1px solid var(--lumen-color-border);
    border-radius: var(--lumen-radius-md);
    background: var(--lumen-color-bg);
    color: var(--lumen-color-text);
    font-family: inherit;
    font-size: var(--lumen-fs-sm);
    transition: border-color var(--lumen-dur-fast) var(--lumen-ease),
                box-shadow var(--lumen-dur-fast) var(--lumen-ease);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--lumen-color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea { min-height: 140px; resize: vertical; }

.lumen-btn,
button, input[type="submit"], input[type="button"], input[type="reset"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--lumen-space-2);
    padding: var(--lumen-space-3) var(--lumen-space-5);
    background: var(--lumen-gradient-btn);
    color: #fff;
    border: 0;
    border-radius: var(--lumen-radius-md);
    font-family: inherit;
    font-size: var(--lumen-fs-sm);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.32);
    transition: background var(--lumen-dur-fast) var(--lumen-ease),
                transform var(--lumen-dur-fast) var(--lumen-ease),
                box-shadow var(--lumen-dur-fast) var(--lumen-ease),
                filter var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-btn:hover,
button:hover, input[type="submit"]:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(99, 102, 241, 0.42);
    filter: brightness(1.05);
}

.lumen-btn:active, button:active { transform: translateY(0); }

.lumen-btn--ghost {
    background: transparent;
    color: var(--lumen-color-text);
    border: 1px solid var(--lumen-color-border);
}
.lumen-btn--ghost:hover { background: var(--lumen-color-surface); color: var(--lumen-color-text); }

.lumen-read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--lumen-space-2);
    color: var(--lumen-color-accent);
    font-weight: 600;
    font-size: var(--lumen-fs-sm);
    margin-top: auto;
    align-self: flex-start;
}

.lumen-read-more::after {
    content: '\2192';
    transition: transform var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-read-more:hover::after { transform: translateX(4px); }

/* 12. Pagination ------------------------------------------ */
.lumen-pagination {
    display: flex;
    justify-content: center;
    gap: var(--lumen-space-2);
    margin-top: var(--lumen-space-8);
    flex-wrap: wrap;
}

.lumen-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--lumen-space-3);
    border-radius: var(--lumen-radius-md);
    border: 1px solid var(--lumen-color-border);
    color: var(--lumen-color-text);
    font-size: var(--lumen-fs-sm);
    font-weight: 500;
    transition: all var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-pagination .page-numbers:hover,
.lumen-pagination .page-numbers.current {
    background: var(--lumen-color-accent);
    color: #fff;
    border-color: var(--lumen-color-accent);
}

.lumen-pagination .page-numbers.dots {
    border: none;
    background: none;
}

/* 13. Footer ---------------------------------------------- */
.lumen-footer {
    position: relative;
    background: linear-gradient(180deg, #0f172a 0%, #1e1b4b 100%);
    color: #cbd5e1;
    padding: var(--lumen-space-9) 0 var(--lumen-space-5);
    font-size: var(--lumen-fs-sm);
    overflow: hidden;
}

.lumen-footer::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 3px;
    background: var(--lumen-gradient-accent-line);
}

.lumen-footer::after {
    content: '';
    position: absolute;
    width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.32) 0%, transparent 65%);
    top: -240px; right: -120px;
    pointer-events: none;
}

.lumen-footer .lumen-container { position: relative; z-index: 1; }

.lumen-footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--lumen-space-3);
    max-width: 360px;
    margin-bottom: var(--lumen-space-6);
}

.lumen-footer-brand .lumen-brand-mark {
    color: #fff;
}

.lumen-footer-brand p {
    color: #cbd5e1;
    margin: 0;
    line-height: var(--lumen-lh-normal);
}

.lumen-footer-grid {
    display: grid;
    grid-template-columns: 1.6fr repeat(3, 1fr);
    gap: var(--lumen-space-7);
    margin-bottom: var(--lumen-space-7);
    align-items: start;
}

.lumen-footer h4 {
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: #fff;
    margin-bottom: var(--lumen-space-4);
    font-family: var(--lumen-font-sans);
    font-weight: 700;
}

.lumen-footer ul { list-style: none; padding: 0; margin: 0; }
.lumen-footer ul li { margin: 0 0 var(--lumen-space-2); border: none; padding: 0; }
.lumen-footer ul li a { color: #cbd5e1; transition: color var(--lumen-dur-fast) var(--lumen-ease), padding-left var(--lumen-dur-fast) var(--lumen-ease); }
.lumen-footer ul li a:hover { color: #fff; padding-left: 4px; }

.lumen-footer-newsletter input[type="email"] {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #fff;
    margin-bottom: var(--lumen-space-3);
}
.lumen-footer-newsletter input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.55);
}
.lumen-footer-newsletter input[type="email"]:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--lumen-color-secondary);
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.2);
}
.lumen-footer-newsletter button {
    width: 100%;
}

.lumen-social {
    display: flex;
    gap: var(--lumen-space-2);
    margin-top: var(--lumen-space-4);
}
.lumen-social a {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    transition: all var(--lumen-dur-fast) var(--lumen-ease);
}
.lumen-social a:hover {
    background: var(--lumen-gradient-btn);
    border-color: transparent;
    transform: translateY(-2px);
    color: #fff;
}
.lumen-social svg { width: 18px; height: 18px; }

.lumen-footer-bottom {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lumen-space-4);
    align-items: center;
    justify-content: space-between;
    padding-top: var(--lumen-space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.lumen-footer-bottom .lumen-credits {
    color: #94a3b8;
    margin: 0;
}

.lumen-footer-bottom a {
    color: #cbd5e1;
}
.lumen-footer-bottom a:hover { color: #fff; }

.lumen-footer .lumen-footer-menu {
    display: flex;
    gap: var(--lumen-space-4);
    list-style: none;
    margin: 0;
    padding: 0;
}
.lumen-footer .lumen-footer-menu li { margin: 0; padding: 0; border: none; }
.lumen-footer .lumen-footer-menu a { font-size: var(--lumen-fs-xs); }

.lumen-back-to-top {
    position: fixed;
    bottom: var(--lumen-space-6);
    right: var(--lumen-space-6);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--lumen-color-accent);
    color: #fff;
    border: 0;
    cursor: pointer;
    box-shadow: var(--lumen-shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--lumen-dur-base) var(--lumen-ease),
                visibility var(--lumen-dur-base),
                transform var(--lumen-dur-base) var(--lumen-ease),
                background var(--lumen-dur-fast) var(--lumen-ease);
    z-index: 90;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.lumen-back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.lumen-back-to-top:hover { background: var(--lumen-color-accent-hover); transform: translateY(-2px); }

/* 14. Animations & Transitions ---------------------------- */
@keyframes lumen-fade-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes lumen-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes lumen-spin {
    to { transform: rotate(360deg); }
}

@keyframes lumen-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.lumen-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--lumen-dur-slow) var(--lumen-ease),
                transform var(--lumen-dur-slow) var(--lumen-ease);
    will-change: opacity, transform;
}

.lumen-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.lumen-reveal[data-lumen-delay="1"] { transition-delay: 80ms; }
.lumen-reveal[data-lumen-delay="2"] { transition-delay: 160ms; }
.lumen-reveal[data-lumen-delay="3"] { transition-delay: 240ms; }
.lumen-reveal[data-lumen-delay="4"] { transition-delay: 320ms; }

.lumen-page-loader {
    position: fixed;
    inset: 0;
    background: var(--lumen-color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--lumen-dur-slow) var(--lumen-ease),
                visibility var(--lumen-dur-slow);
}

.lumen-page-loader.is-loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.lumen-page-loader__spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--lumen-color-border);
    border-top-color: var(--lumen-color-accent);
    border-radius: 50%;
    animation: lumen-spin 0.8s linear infinite;
}

.lumen-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--lumen-color-accent);
    width: 0;
    z-index: 200;
    transition: width 80ms linear;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .lumen-reveal { opacity: 1; transform: none; }
}

/* 15. Utility / Accessibility ----------------------------- */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    -webkit-clip-path: inset(50%);
    clip-path: inset(50%);
    height: 1px; width: 1px;
    margin: -1px; padding: 0;
    overflow: hidden;
    position: absolute !important;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background: var(--lumen-color-bg);
    clip: auto !important;
    -webkit-clip-path: none;
    clip-path: none;
    color: var(--lumen-color-text);
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 1em 1.5em;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
    box-shadow: var(--lumen-shadow-md);
    border-radius: var(--lumen-radius-md);
}

.alignleft { float: left; margin-right: var(--lumen-space-5); }
.alignright { float: right; margin-left: var(--lumen-space-5); }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }
.alignwide { width: 100%; }
.alignfull { width: 100vw; margin-left: calc(50% - 50vw); }

.sticky { position: relative; }

.wp-caption { max-width: 100%; }
.wp-caption-text { color: var(--lumen-color-muted); font-size: var(--lumen-fs-sm); text-align: center; }

.gallery { display: grid; gap: var(--lumen-space-3); margin: var(--lumen-space-5) 0; }
.gallery-columns-2 { grid-template-columns: repeat(2, 1fr); }
.gallery-columns-3 { grid-template-columns: repeat(3, 1fr); }
.gallery-columns-4 { grid-template-columns: repeat(4, 1fr); }
.gallery-item { margin: 0 !important; }

/* 16. PostBlogHub Components ------------------------------ */

/* Brand mark (logo + wordmark) */
.lumen-brand-mark {
    display: inline-flex;
    align-items: center;
    gap: var(--lumen-space-3);
    text-decoration: none;
    color: inherit;
}

.lumen-brand-mark__icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--lumen-gradient-btn);
    color: #fff;
    font-family: var(--lumen-font-serif);
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.32);
    flex-shrink: 0;
    transition: transform var(--lumen-dur-base) var(--lumen-ease), box-shadow var(--lumen-dur-base) var(--lumen-ease);
}

.lumen-brand-mark:hover .lumen-brand-mark__icon {
    transform: rotate(-6deg) scale(1.05);
    box-shadow: 0 10px 28px rgba(99, 102, 241, 0.45);
}

.lumen-brand-mark__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.lumen-brand-mark__name {
    font-family: var(--lumen-font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--lumen-color-text);
}
.lumen-brand-mark__tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--lumen-color-muted);
    font-weight: 600;
    margin-top: 2px;
}

.lumen-footer-brand .lumen-brand-mark__name { color: #fff; }
.lumen-footer-brand .lumen-brand-mark__tag { color: rgba(255,255,255,0.6); }

/* Categories showcase grid (homepage) */
.lumen-categories-section {
    margin: var(--lumen-space-8) 0;
}

.lumen-section-header {
    text-align: center;
    margin-bottom: var(--lumen-space-7);
}
.lumen-section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--lumen-space-3);
}
.lumen-section-header p {
    color: var(--lumen-color-muted);
    max-width: 560px;
    margin: 0 auto;
}

.lumen-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--lumen-space-5);
}

.lumen-category-card {
    position: relative;
    padding: var(--lumen-space-6) var(--lumen-space-5);
    border-radius: var(--lumen-radius-lg);
    background: var(--lumen-color-bg);
    border: 1px solid var(--lumen-color-border);
    text-decoration: none;
    color: var(--lumen-color-text);
    overflow: hidden;
    transition: transform var(--lumen-dur-base) var(--lumen-ease),
                box-shadow var(--lumen-dur-base) var(--lumen-ease),
                border-color var(--lumen-dur-base) var(--lumen-ease);
}

.lumen-category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--lumen-gradient-soft);
    opacity: 0;
    transition: opacity var(--lumen-dur-base) var(--lumen-ease);
}

.lumen-category-card > * { position: relative; z-index: 1; }

.lumen-category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lumen-shadow-lg);
    border-color: transparent;
    color: var(--lumen-color-text);
}
.lumen-category-card:hover::before { opacity: 1; }

.lumen-category-card__icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--lumen-space-4);
    font-size: 1.5rem;
}

.lumen-category-card__title {
    font-size: var(--lumen-fs-md);
    margin-bottom: var(--lumen-space-2);
    font-weight: 600;
}

.lumen-category-card__count {
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.lumen-category-grid > *:nth-child(6n+1) .lumen-category-card__icon { background: #eef2ff; color: #6366f1; }
.lumen-category-grid > *:nth-child(6n+2) .lumen-category-card__icon { background: #fce7f3; color: #ec4899; }
.lumen-category-grid > *:nth-child(6n+3) .lumen-category-card__icon { background: #fef3c7; color: #d97706; }
.lumen-category-grid > *:nth-child(6n+4) .lumen-category-card__icon { background: #d1fae5; color: #059669; }
.lumen-category-grid > *:nth-child(6n+5) .lumen-category-card__icon { background: #cffafe; color: #0891b2; }
.lumen-category-grid > *:nth-child(6n+6) .lumen-category-card__icon { background: #fee2e2; color: #dc2626; }

/* Newsletter strip */
.lumen-newsletter {
    margin: var(--lumen-space-8) 0;
    padding: var(--lumen-space-7);
    border-radius: var(--lumen-radius-lg);
    background: var(--lumen-gradient-soft);
    text-align: center;
    border: 1px solid var(--lumen-color-border);
}

.lumen-newsletter h2 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    margin-bottom: var(--lumen-space-3);
}
.lumen-newsletter p {
    color: var(--lumen-color-muted);
    margin-bottom: var(--lumen-space-5);
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.lumen-newsletter-form {
    display: flex;
    gap: var(--lumen-space-2);
    max-width: 480px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
}
.lumen-newsletter-form input[type="email"] {
    flex: 1 1 240px;
    background: #fff;
    border-color: var(--lumen-color-border);
}
.lumen-newsletter-form button { flex: 0 0 auto; }

/* FAQ accordion */
.lumen-faq {
    max-width: 760px;
    margin: 0 auto;
    display: grid;
    gap: var(--lumen-space-4);
}

.lumen-faq-item {
    border: 1px solid var(--lumen-color-border);
    border-radius: var(--lumen-radius-md);
    background: var(--lumen-color-bg);
    overflow: hidden;
    transition: border-color var(--lumen-dur-fast) var(--lumen-ease),
                box-shadow var(--lumen-dur-fast) var(--lumen-ease);
}

.lumen-faq-item.is-open {
    border-color: var(--lumen-color-accent);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.12);
}

.lumen-faq-q {
    width: 100%;
    background: none;
    border: none;
    padding: var(--lumen-space-5);
    text-align: left;
    font-size: var(--lumen-fs-base);
    font-weight: 600;
    cursor: pointer;
    color: var(--lumen-color-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--lumen-space-3);
    transition: color var(--lumen-dur-fast) var(--lumen-ease);
    box-shadow: none;
}
.lumen-faq-q:hover { background: none; color: var(--lumen-color-accent); transform: none; box-shadow: none; filter: none; }

.lumen-faq-q__icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--lumen-color-tag-bg);
    color: var(--lumen-color-tag-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    line-height: 1;
    transition: transform var(--lumen-dur-base) var(--lumen-ease),
                background var(--lumen-dur-fast) var(--lumen-ease),
                color var(--lumen-dur-fast) var(--lumen-ease);
}
.lumen-faq-item.is-open .lumen-faq-q__icon {
    background: var(--lumen-gradient-btn);
    color: #fff;
    transform: rotate(45deg);
}

.lumen-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--lumen-dur-base) var(--lumen-ease);
}
.lumen-faq-a__inner {
    padding: 0 var(--lumen-space-5) var(--lumen-space-5);
    color: var(--lumen-color-muted);
    line-height: var(--lumen-lh-normal);
}
.lumen-faq-a__inner p:last-child { margin-bottom: 0; }

/* About page sections */
.lumen-about-hero {
    text-align: center;
    padding: var(--lumen-space-8) var(--lumen-space-5);
    background: var(--lumen-gradient-soft);
    border-radius: var(--lumen-radius-lg);
    margin-bottom: var(--lumen-space-7);
}
.lumen-about-hero h1 {
    font-size: clamp(2.25rem, 5vw, var(--lumen-fs-3xl));
    margin-bottom: var(--lumen-space-4);
    background: var(--lumen-gradient-btn);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.lumen-about-hero p {
    max-width: 640px;
    margin: 0 auto;
    font-size: var(--lumen-fs-md);
    color: var(--lumen-color-muted);
}

.lumen-about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--lumen-space-5);
    margin: var(--lumen-space-7) 0;
}
.lumen-stat {
    text-align: center;
    padding: var(--lumen-space-6) var(--lumen-space-4);
    background: var(--lumen-color-bg);
    border: 1px solid var(--lumen-color-border);
    border-radius: var(--lumen-radius-lg);
    transition: transform var(--lumen-dur-base) var(--lumen-ease), box-shadow var(--lumen-dur-base) var(--lumen-ease);
}
.lumen-stat:hover { transform: translateY(-4px); box-shadow: var(--lumen-shadow-md); }
.lumen-stat__value {
    font-family: var(--lumen-font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--lumen-gradient-btn);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
    margin-bottom: var(--lumen-space-2);
}
.lumen-stat__label {
    color: var(--lumen-color-muted);
    font-size: var(--lumen-fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.lumen-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--lumen-space-5);
    margin: var(--lumen-space-7) 0;
}
.lumen-feature {
    padding: var(--lumen-space-5);
    background: var(--lumen-color-surface);
    border-radius: var(--lumen-radius-md);
    border: 1px solid var(--lumen-color-border);
}
.lumen-feature__icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--lumen-gradient-btn);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--lumen-space-3);
}
.lumen-feature h3 { font-size: var(--lumen-fs-md); margin-bottom: var(--lumen-space-2); }
.lumen-feature p { color: var(--lumen-color-muted); font-size: var(--lumen-fs-sm); margin: 0; }

/* Page header for about/faq */
.lumen-page-header {
    text-align: center;
    padding: var(--lumen-space-8) 0 var(--lumen-space-7);
}
.lumen-page-header h1 {
    font-size: clamp(2rem, 4.5vw, 3rem);
    margin-bottom: var(--lumen-space-3);
}
.lumen-page-header p {
    color: var(--lumen-color-muted);
    max-width: 600px;
    margin: 0 auto;
    font-size: var(--lumen-fs-md);
}

/* 17. Responsive Breakpoints ------------------------------ */
@media (max-width: 1024px) {
    .lumen-content-wrap { grid-template-columns: minmax(0, 1fr) 280px; gap: var(--lumen-space-6); }
    .lumen-featured-grid .lumen-featured-primary { grid-column: span 12; }
    .lumen-featured-grid .lumen-featured-secondary {
        grid-column: span 12;
        grid-template-columns: 1fr 1fr;
    }
    .lumen-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 782px) {
    :root {
        --lumen-fs-2xl: 2rem;
        --lumen-fs-3xl: 2.5rem;
    }

    .lumen-content-wrap {
        grid-template-columns: minmax(0, 1fr);
        gap: var(--lumen-space-7);
    }

    .lumen-sidebar {
        margin-top: var(--lumen-space-6);
        padding-top: var(--lumen-space-6);
        border-top: 1px solid var(--lumen-color-border);
    }

    .lumen-menu-toggle { display: inline-flex; align-items: center; justify-content: center; }

    .lumen-primary-nav .lumen-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        gap: 0;
        background: var(--lumen-color-bg);
        padding: var(--lumen-space-5);
        border-top: 1px solid var(--lumen-color-border);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform var(--lumen-dur-base) var(--lumen-ease);
        z-index: 99;
    }

    .lumen-primary-nav.is-open .lumen-menu { transform: translateX(0); }

    .lumen-menu li { width: 100%; }
    .lumen-menu li a {
        display: block;
        padding: var(--lumen-space-4) var(--lumen-space-3);
        border-bottom: 1px solid var(--lumen-color-border);
        font-size: var(--lumen-fs-base);
    }
    .lumen-menu a::after { display: none; }
    .lumen-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 0;
        background: var(--lumen-color-surface);
        padding-left: var(--lumen-space-4);
    }

    .lumen-featured-grid .lumen-featured-secondary {
        grid-template-columns: 1fr;
    }

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

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

    .lumen-comment-list .children { padding-left: var(--lumen-space-4); }

    .lumen-footer-grid { grid-template-columns: 1fr; gap: var(--lumen-space-6); }
    .lumen-hero { padding: var(--lumen-space-7) var(--lumen-space-4) var(--lumen-space-7); }
    .lumen-brand-mark__tag { display: none; }
    .lumen-newsletter { padding: var(--lumen-space-6) var(--lumen-space-4); }
}

@media (max-width: 480px) {
    .lumen-container { padding: 0 var(--lumen-space-4); }
    .lumen-post-card .lumen-card-body { padding: var(--lumen-space-4); }
    .lumen-comment-list .comment-body { grid-template-columns: 40px 1fr; }
    .lumen-comment-list .avatar { width: 40px; height: 40px; }
}