/*
 * Theme Name:   YourTechBlog
 * Theme URI:    https://yourtechblog.com
 * Description:  A Medium-inspired dark mode WordPress child theme for a Programming & DevOps blog. Built on SND.
 * Author:       YourTechBlog Team
 * Author URI:   https://yourtechblog.com
 * Template:     snd
 * Version:      1.1.0
 * License:      GNU General Public License v2 or later
 * License URI:  https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:  yourtechblog
 * Tags:         dark, medium-style, developer, programming, devops, tech, blog, reading
 */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */

:root {
    /* ── Medium Dark Mode Backgrounds ── */
    --bg-primary: #191919;
    --bg-card: #242424;
    --bg-elevated: #2a2a2a;
    --bg-surface: #1c1c1c;
    --bg-input: #2a2a2a;

    /* ── Accent — Modern Blue ── */
    --accent-cyan: #00b8ff;
    --accent-purple: #6b7280;
    --accent-gradient: linear-gradient(135deg, #00b8ff, #0077cc);
    --accent-cyan-glow: rgba(0, 184, 255, 0.2);
    --accent-purple-glow: rgba(107, 114, 128, 0.15);

    /* ── Text Colors ── */
    --text-primary: #e6e6e6;
    --text-heading: #f2f2f2;
    --text-muted: #b3b3b3;
    --text-link: #00b8ff;

    /* ── Borders ── */
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(0, 184, 255, 0.2);

    /* ── Typography — Charter/Bitter serif for headings (Medium-style) ── */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-heading: 'Charter', 'Bitter', 'Georgia', 'Times New Roman', serif;

    /* ── Spacing ── */
    --section-padding: 40px 0;
    --container-width: 1200px;
    --card-radius: 8px;
    --btn-radius: 6px;

    /* ── Transitions ── */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* ── Shadows — subtle, no neon glow ── */
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
    --shadow-card-hover: 0 4px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow-cyan: 0 0 16px rgba(0, 184, 255, 0.18);
    --shadow-glow-purple: 0 0 16px rgba(107, 114, 128, 0.1);
}


/* ==========================================================================
   2. GLOBAL RESET & BASE STYLES
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

body,
body.flavor-flavor {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-heading);
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5em;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.6rem; }
h4 { font-size: 1.3rem; }

p {
    color: var(--text-primary);
    margin-bottom: 1.2em;
}

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

a:hover {
    color: var(--accent-purple);
}

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

::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}


/* ==========================================================================
   3. UTILITY CLASSES
   ========================================================================== */

.ytb-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.ytb-section {
    padding: var(--section-padding);
}

.ytb-section-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-heading);
}

.ytb-section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 28px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.ytb-gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ytb-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--btn-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.ytb-btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow-cyan);
}

.ytb-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 245, 212, 0.5);
    color: var(--bg-primary);
}

.ytb-btn-outline {
    background: transparent;
    color: var(--accent-cyan);
    border: 2px solid var(--accent-cyan);
}

.ytb-btn-outline:hover {
    background: rgba(0, 245, 212, 0.1);
    transform: translateY(-2px);
    color: var(--accent-cyan);
}

.ytb-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ytb-badge-cyan {
    background: rgba(0, 184, 255, 0.15);
    color: var(--accent-cyan);
}

.ytb-badge-purple {
    background: rgba(123, 47, 247, 0.15);
    color: var(--accent-purple);
}


/* ==========================================================================
   4. HEADER & NAVIGATION
   ========================================================================== */

.ytb-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-normal);
}

.ytb-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    border-bottom-color: var(--border-accent);
}

.ytb-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.ytb-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-heading);
    text-decoration: none;
}

.ytb-logo:hover {
    color: var(--text-heading);
}

.ytb-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: contain;
    display: block;
}

.ytb-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ytb-nav a {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--btn-radius);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.ytb-nav a:hover,
.ytb-nav a.current-menu-item > a,
.ytb-nav .current-menu-item > a {
    color: var(--accent-cyan);
    background: rgba(0, 245, 212, 0.08);
}

/* Hamburger Menu Button */
.ytb-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.ytb-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.ytb-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.ytb-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.ytb-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}


/* ==========================================================================
   5. HERO SECTION
   ========================================================================== */

.ytb-hero {
    position: relative;
    padding: 72px 24px 24px;
    overflow: hidden;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
}

/* Subtle top fade for depth */
.ytb-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center top, rgba(255, 255, 255, 0.025) 0%, transparent 60%);
    pointer-events: none;
}

.ytb-hero::after {
    display: none;
}

/* Two-column hero grid */
.ytb-hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.ytb-hero-left  { display: flex; flex-direction: column; }
.ytb-hero-right { display: flex; flex-direction: column; gap: 12px; align-self: center; }

/* Eyebrow label */
.ytb-hero-eyebrow {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(62, 181, 73, 0.08);
    border: 1px solid rgba(62, 181, 73, 0.2);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-cyan);
    margin-bottom: 24px;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    font-family: var(--font-body);
    width: fit-content;
}

.ytb-hero-title {
    font-size: 3.4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text-heading);
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
}

.ytb-hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 0;
    line-height: 1.7;
    border-left: 3px solid var(--accent-cyan);
    padding-left: 16px;
}

/* CTA buttons — stacked column in right pane */
.ytb-hero-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Topic tiles grid in hero right */
.ytb-hero-tiles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.ytb-tile {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border-radius: var(--btn-radius);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.ytb-tile:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(62, 181, 73, 0.06);
}

.ytb-tile-primary {
    grid-column: 1 / -1;
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border: none;
    font-size: 0.95rem;
    box-shadow: var(--shadow-glow-cyan);
}

.ytb-tile-primary:hover {
    color: var(--bg-primary);
    box-shadow: 0 0 30px rgba(62, 181, 73, 0.4);
}

/* AIOps pipeline monitor widget */
.ytb-aiops-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: var(--card-radius);
    padding: 20px 24px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    box-shadow: var(--shadow-card), 0 0 0 1px rgba(62, 181, 73, 0.05);
}

.ytb-aiops-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-subtle);
}

.ytb-aiops-title {
    color: var(--text-heading);
    font-weight: 600;
    font-size: 0.85rem;
    font-family: var(--font-body);
}

.ytb-aiops-live {
    color: var(--accent-cyan);
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    animation: ytb-pulse 2s infinite;
}

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

.ytb-aiops-row {
    display: grid;
    grid-template-columns: 64px 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.ytb-aiops-row:last-of-type { border-bottom: none; }

.ytb-aiops-stage {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--accent-cyan);
    opacity: 0.7;
}

.ytb-aiops-name { color: var(--text-primary); }
.ytb-aiops-ok   { color: var(--accent-cyan); white-space: nowrap; }
.ytb-aiops-warn { color: #f7c948; white-space: nowrap; }

.ytb-aiops-metrics {
    display: flex;
    justify-content: space-around;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
}

.ytb-aiops-metric { text-align: center; }
.ytb-aiops-metric .val {
    display: block;
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: 0.95rem;
}
.ytb-aiops-metric .lbl {
    display: block;
    color: var(--text-muted);
    font-size: 0.7rem;
    margin-top: 2px;
    font-family: var(--font-body);
}


/* ==========================================================================
   6. FEATURED POSTS GRID
   ========================================================================== */

.ytb-posts {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.ytb-posts-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

/* Post Card — horizontal row layout */
.ytb-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: grid;
    grid-template-columns: 160px 1fr;
    align-items: stretch;
}

.ytb-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-card-hover);
}

.ytb-card-image {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-elevated);
}

.ytb-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.ytb-card:hover .ytb-card-image img {
    transform: scale(1.05);
}

.ytb-card-image .ytb-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 0.7rem;
}

.ytb-card-body {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.ytb-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.ytb-card-excerpt {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 8px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ytb-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.ytb-card-date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ytb-card-readtime {
    color: var(--accent-cyan);
    font-weight: 500;
}

.ytb-posts-more {
    text-align: center;
}


/* ==========================================================================
   9. NEWSLETTER SECTION
   ========================================================================== */

.ytb-newsletter {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.ytb-newsletter-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.ytb-newsletter-card {
    padding: 36px;
    border-radius: var(--card-radius);
    background: var(--bg-card);
    border: 2px solid transparent;
    background-image: linear-gradient(var(--bg-card), var(--bg-card)),
                      var(--accent-gradient);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: var(--shadow-card);
}

.ytb-newsletter-card h2 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.ytb-newsletter-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.ytb-newsletter-form {
    display: flex;
    gap: 12px;
}

.ytb-newsletter-input {
    flex: 1;
    padding: 14px 20px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--btn-radius);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.ytb-newsletter-input::placeholder {
    color: var(--text-muted);
}

.ytb-newsletter-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}

.ytb-newsletter-privacy {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 16px;
}


/* ==========================================================================
   10. FOOTER
   ========================================================================== */

.ytb-footer {
    padding: 28px 0 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
}

.ytb-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 20px;
}

.ytb-footer-brand h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.ytb-footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.ytb-footer-heading {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ytb-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ytb-footer-links li {
    margin-bottom: 6px;
}

.ytb-footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    text-decoration: none;
}

.ytb-footer-links a:hover {
    color: var(--accent-cyan);
}

.ytb-footer-social {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.ytb-footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.ytb-footer-social a:hover {
    color: var(--accent-cyan);
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.ytb-footer-bottom {
    padding: 14px 0;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}


/* ==========================================================================
   11. SINGLE POST STYLES
   ========================================================================== */

.ytb-single {
    padding-top: 20px;
}

.ytb-single-header {
    max-width: 800px;
    margin: 0 auto 16px;
    text-align: center;
    padding: 0 24px;
}

.ytb-single-header .ytb-badge { margin-bottom: 8px !important; }

.ytb-single-header h1 {
    font-size: 2.6rem;
    margin-bottom: 12px;
}

.ytb-single-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.ytb-single-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ytb-single-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 60px;
}

.ytb-single-content h2 { margin-top: 48px; }
.ytb-single-content h3 { margin-top: 36px; }

.ytb-single-content pre {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--card-radius);
    padding: 24px;
    overflow-x: auto;
    margin: 24px 0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.7;
}

.ytb-single-content code {
    font-family: var(--font-mono);
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--accent-cyan);
}

.ytb-single-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.ytb-single-content blockquote {
    border-left: 3px solid var(--accent-cyan);
    margin: 24px 0;
    padding: 16px 24px;
    background: rgba(0, 245, 212, 0.05);
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
}

.ytb-single-content blockquote p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-style: italic;
}

.ytb-single-content ul,
.ytb-single-content ol {
    padding-left: 24px;
    margin-bottom: 1.2em;
}

.ytb-single-content li {
    margin-bottom: 8px;
    color: var(--text-primary);
}

.ytb-single-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    background: var(--bg-card);
    border-radius: var(--card-radius);
    overflow: hidden;
}

.ytb-single-content th {
    background: var(--bg-elevated);
    color: var(--text-heading);
    font-weight: 600;
    padding: 14px 18px;
    text-align: left;
    font-size: 0.9rem;
}

.ytb-single-content td {
    padding: 12px 18px;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}

/* Author Bio Card */
.ytb-author-card {
    display: flex;
    gap: 20px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--card-radius);
    padding: 28px;
    margin: 48px 0;
}

.ytb-author-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 2px solid var(--accent-cyan);
    object-fit: cover;
    flex-shrink: 0;
}

.ytb-author-name {
    font-weight: 700;
    color: var(--text-heading);
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.ytb-author-bio {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Related Posts */
.ytb-related {
    padding: 48px 0 60px;
    border-top: 1px solid var(--border-subtle);
}


/* ==========================================================================
   12. ARCHIVE / CATEGORY PAGES
   ========================================================================== */

.ytb-archive {
    padding-top: 120px;
    padding-bottom: 60px;
}

.ytb-archive-header {
    text-align: center;
    margin-bottom: 48px;
}

.ytb-archive-header h1 {
    margin-bottom: 8px;
}

.ytb-archive-header p {
    color: var(--text-muted);
}

/* Pagination */
.ytb-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 40px 0;
}

.ytb-pagination a,
.ytb-pagination span {
    padding: 10px 16px;
    border-radius: var(--btn-radius);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.ytb-pagination a {
    color: var(--text-muted);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    text-decoration: none;
}

.ytb-pagination a:hover {
    border-color: var(--border-accent);
    color: var(--accent-cyan);
}

.ytb-pagination .current {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    font-weight: 700;
}


/* ==========================================================================
   13. BREADCRUMB
   ========================================================================== */

.ytb-breadcrumb {
    padding: 100px 24px 0;
    max-width: var(--container-width);
    margin: 0 auto;
}

.ytb-breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
}

.ytb-breadcrumb-list a {
    color: var(--text-muted);
}

.ytb-breadcrumb-list a:hover {
    color: var(--accent-cyan);
}

.ytb-breadcrumb-list .separator {
    color: var(--border-accent);
}


/* ==========================================================================
   14. RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet: 1024px and below */
@media (max-width: 1024px) {
    .ytb-hero-title {
        font-size: 3rem;
    }

    .ytb-footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* Tablet Portrait: 768px and below */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }

    /* Mobile Nav */
    .ytb-menu-toggle {
        display: flex;
    }

    .ytb-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-surface);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 4px;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border-subtle);
        z-index: 999;
    }

    .ytb-nav.open {
        right: 0;
    }

    .ytb-nav a {
        width: 100%;
        padding: 12px 16px;
        font-size: 1rem;
    }

    /* Hero */
    .ytb-hero {
        padding: 72px 24px 24px;
    }

    .ytb-hero-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .ytb-hero-title {
        font-size: 2.4rem;
    }

    .ytb-hero-subtitle {
        font-size: 1rem;
    }

    .ytb-hero-tiles {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Posts */
    .ytb-posts-grid {
        gap: 16px;
    }

    .ytb-card {
        grid-template-columns: 1fr;
    }

    .ytb-card-image {
        height: 120px;
    }

    .ytb-hero-subtitle {
        font-size: 1rem;
    }

    .ytb-aiops-widget {
        display: none;
    }

    /* Newsletter */
    .ytb-newsletter-inner { grid-template-columns: 1fr; }
    .ytb-newsletter-card {
        padding: 28px 20px;
    }

    .ytb-newsletter-form {
        flex-direction: column;
    }

    /* Footer */
    .ytb-footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }

    .ytb-section-title { font-size: 1.6rem; }

    /* Single Post */
    .ytb-single-header h1 {
        font-size: 1.8rem;
    }

    .ytb-author-card {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile S: 480px and below */
@media (max-width: 480px) {
    .ytb-hero-title {
        font-size: 2rem;
    }

    .ytb-hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .ytb-about-highlights {
        grid-template-columns: 1fr;
    }
}


/* ==========================================================================
   15. SND PARENT THEME OVERRIDES
   ========================================================================== */

/* Force our dark background globally */
body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

/* SND uses .wp-site-blocks and .entry-content — ensure dark treatment */
.wp-site-blocks,
.wp-block-group,
.wp-block-post-content {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* Block editor content inherits our font */
.wp-block-post-content p,
.wp-block-post-content li {
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.75;
}

/* SND site header — hide when our PHP header is active */
.ytb-custom-header-active .wp-block-template-part[class*="header"],
.ytb-custom-header-active header.site-header {
    display: none !important;
}


/* ==========================================================================
   16. POST ARTICLE STYLES  (.ytb-post)
   NOTE: <style> tags in post content are stripped by WordPress.com.
         All post CSS lives here, scoped to .ytb-post.
         Every article must wrap content in:
           <div class="ytb-post"><article class="article-body">...</article></div>
   ========================================================================== */

.ytb-post {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-primary);
}

/* ── Article body ── */
.ytb-post .article-body { padding: 8px 0 32px; }

.ytb-post .lede {
    font-size: 1.2rem;
    font-weight: 400;
    font-style: italic;
    color: var(--text-muted);
    border-left: 3px solid var(--accent-cyan);
    padding-left: 20px;
    margin-bottom: 24px;
    line-height: 1.65;
}

.ytb-post h2 {
    font-family: var(--font-heading);
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 32px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
}

.ytb-post h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin: 28px 0 8px;
    padding-left: 12px;
    border-left: 3px solid var(--accent-cyan);
    letter-spacing: 0.01em;
}

.ytb-post p       { margin-bottom: 14px; color: var(--text-primary); }
.ytb-post strong  { color: var(--text-heading); }

/* ── Pull quote ── */
.ytb-post .pull-quote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--bg-elevated);
    border-left: 4px solid var(--accent-cyan);
    position: relative;
}

.ytb-post .pull-quote blockquote {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-style: italic;
    line-height: 1.55;
    color: var(--text-heading);
    margin: 0;
    padding: 0;
    border: none;
    background: none;
}

.ytb-post .pull-quote cite {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 14px;
    font-style: normal;
}

/* ── Stat cards ── */
.ytb-post .stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin: 24px 0;
}

.ytb-post .stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-top: 3px solid var(--accent-cyan);
    padding: 24px 20px;
    border-radius: var(--card-radius);
}

.ytb-post .stat-number {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent-cyan);
    line-height: 1;
}

.ytb-post .stat-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 8px;
}

.ytb-post .stat-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 10px;
    line-height: 1.5;
}

/* ── Comparison table ── */
.ytb-post .comparison-wrap { margin: 24px 0; overflow-x: auto; }

.ytb-post .comparison-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background: var(--bg-card);
    border-radius: var(--card-radius);
    overflow: hidden;
}

.ytb-post .comparison-wrap thead tr { background: var(--bg-elevated); }

.ytb-post .comparison-wrap thead th {
    padding: 14px 16px;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-heading);
}

.ytb-post .comparison-wrap tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.03);
}

.ytb-post .comparison-wrap tbody tr:hover {
    background: var(--accent-cyan-glow);
}

.ytb-post .comparison-wrap tbody td {
    padding: 12px 16px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.ytb-post .comparison-wrap tbody td:first-child {
    font-weight: 600;
    color: var(--text-heading);
}

.ytb-post .comparison-wrap thead th:nth-child(2) { color: #f87171; }
.ytb-post .comparison-wrap thead th:nth-child(3) { color: #4ade80; }

.ytb-post .badge-yes { color: #4ade80; font-weight: 700; background: rgba(74,222,128,0.08); }
.ytb-post .badge-no  { color: #f87171; font-weight: 700; background: rgba(248,113,113,0.08); }

/* ── Callout ── */
.ytb-post .callout {
    background: var(--bg-elevated);
    border-left: 4px solid var(--accent-cyan);
    padding: 14px 18px;
    margin: 20px 0;
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
}

.ytb-post .callout-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.ytb-post .callout p { margin: 0; font-size: 0.95rem; color: var(--text-primary); }

/* ── Process steps ── */
.ytb-post .steps { margin: 24px 0; }

.ytb-post .step {
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
    align-items: flex-start;
}

.ytb-post .step-num {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    background: var(--accent-cyan);
    color: var(--bg-primary);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.ytb-post .step-body h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 5px;
}

.ytb-post .step-body p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

/* ── Divider ── */
.ytb-post .divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 32px 0;
}

.ytb-post .divider::before,
.ytb-post .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-subtle);
}

.ytb-post .divider-icon { font-size: 1rem; color: var(--text-muted); letter-spacing: 0.3em; }

/* ── References ── */
.ytb-post .references {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    padding: 28px 0;
    margin-top: 40px;
}

.ytb-post .references h2 {
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 12px;
    margin-bottom: 0;
}

.ytb-post .ref-list {
    list-style: none;
    counter-reset: ref;
    margin-top: 20px;
    padding: 0;
}

.ytb-post .ref-list li {
    counter-increment: ref;
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.ytb-post .ref-list li::before {
    content: '[' counter(ref) ']';
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    flex-shrink: 0;
    padding-top: 2px;
}

.ytb-post .ref-list a {
    color: var(--text-link);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ── Inline reference superscripts ── */
.ytb-post .ref-sup { font-size: 0.7rem; vertical-align: super; line-height: 0; }
.ytb-post .ref-sup a { color: var(--accent-cyan); text-decoration: none; font-family: var(--font-mono); }
.ytb-post .ref-sup a:hover { text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 640px) {
    .ytb-post h2  { font-size: 1.4rem; }
    .ytb-post .pull-quote { margin: 28px 0; padding: 20px; }
    .ytb-post .stat-grid { grid-template-columns: 1fr; }
}

/* SND site footer — hide when our PHP footer replaces it */
.ytb-custom-header-active .wp-block-template-part[class*="footer"],
.ytb-custom-header-active footer.site-footer {
    display: none !important;
}

/* Ensure links use our accent color */
.entry-content a,
.wp-block-post-content a {
    color: var(--text-link);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.entry-content a:hover,
.wp-block-post-content a:hover {
    color: var(--text-heading);
}