/*
Theme Name: Zobinzo
Theme URI: https://zobinzo.com
Author: Zobinzo
Author URI: https://zobinzo.com
Description: Premium, modern WordPress theme for the Zobinzo online tools platform. Clean four-color design system, responsive layout, blog support, and reusable tool page architecture.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.1
License: GNU General Public License v2 or later
Text Domain: zobinzo
*/

/* ==========================================================================
   1. DESIGN TOKENS — Mandatory Zobinzo Brand Palette
   - Soft background: #F8F9FF
   - White surfaces: #FFFFFF
   - Deep navy: #171A2B
   - Electric violet: #6C4DFF
   - Light lavender: #EAE5FF
   ========================================================================== */
:root {
    /* Approved base palette */
    --zb-bg: #F8F9FF;
    --zb-surface: #FFFFFF;
    --zb-navy: #171A2B;
    --zb-text: #171A2B;
    --zb-violet: #6C4DFF;
    --zb-accent: #6C4DFF;
    --zb-lavender: #EAE5FF;

    /* Derived states & transparencies */
    --zb-accent-hover: #5835F5;
    --zb-accent-active: #4828E0;
    --zb-accent-light: #EAE5FF;
    --zb-accent-tint: rgba(108, 77, 255, 0.08);
    --zb-accent-glow: rgba(108, 77, 255, 0.16);
    --zb-text-secondary: rgba(23, 26, 43, 0.65);
    --zb-text-tertiary: rgba(23, 26, 43, 0.42);
    --zb-border: rgba(23, 26, 43, 0.08);
    --zb-border-hover: rgba(108, 77, 255, 0.28);
    --zb-shadow-sm: 0 1px 3px rgba(23, 26, 43, 0.04), 0 1px 2px rgba(23, 26, 43, 0.02);
    --zb-shadow-md: 0 4px 16px rgba(23, 26, 43, 0.06), 0 2px 6px rgba(23, 26, 43, 0.03);
    --zb-shadow-lg: 0 14px 34px -4px rgba(23, 26, 43, 0.09), 0 4px 12px rgba(108, 77, 255, 0.06);

    /* Layout */
    --zb-max-width: 1200px;
    --zb-header-h: 64px;
    --zb-radius-sm: 6px;
    --zb-radius-md: 10px;
    --zb-radius-lg: 14px;
    --zb-radius-xl: 20px;
    --zb-radius-full: 999px;
    --zb-transition: 0.18s ease;

    /* Typography */
    --zb-font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --zb-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--zb-header-h) + 24px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--zb-font);
    background: var(--zb-bg);
    color: var(--zb-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--zb-accent);
    text-decoration: none;
    transition: color var(--zb-transition);
}
a:hover { color: var(--zb-accent-hover); }
a:focus-visible {
    outline: 2px solid var(--zb-accent);
    outline-offset: 2px;
    border-radius: 3px;
}

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

.zb-container {
    max-width: var(--zb-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

.zb-main { flex: 1 0 auto; }

/* ==========================================================================
   3. HEADER & NAVIGATION — Sticky, Backdrop Blur
   ========================================================================== */
.zb-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--zb-header-h);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--zb-border);
}

.zb-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.zb-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--zb-text);
    flex-shrink: 0;
}

.zb-logo-mark {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zb-logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.035em;
    color: var(--zb-text);
}

.zb-logo-dot {
    color: var(--zb-violet);
}

/* Nav */
.zb-nav { display: flex; align-items: center; }

.zb-nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
    align-items: center;
}

.zb-nav-link {
    color: var(--zb-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: var(--zb-radius-sm);
    transition: all var(--zb-transition);
    white-space: nowrap;
}

.zb-nav-link:hover {
    color: var(--zb-text);
    background: var(--zb-accent-light);
}

.zb-nav-link.is-active {
    color: var(--zb-accent);
    background: var(--zb-accent-light);
}

.zb-nav-cta {
    background: var(--zb-accent);
    color: var(--zb-surface) !important;
    padding: 0.42rem 1rem;
    border-radius: var(--zb-radius-md);
    font-weight: 600;
    font-size: 0.88rem;
    margin-left: 0.5rem;
    transition: background var(--zb-transition);
}
.zb-nav-cta:hover { background: var(--zb-accent-hover); color: var(--zb-surface) !important; }

/* Mobile toggle */
.zb-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-sm);
    cursor: pointer;
    padding: 0.4rem;
    color: var(--zb-text);
    line-height: 0;
}
.zb-menu-toggle:focus-visible {
    outline: 2px solid var(--zb-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   4. BUTTONS — Shared Design System
   ========================================================================== */
.zb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    font-family: var(--zb-font);
    font-weight: 600;
    border: none;
    border-radius: var(--zb-radius-md);
    cursor: pointer;
    transition: all var(--zb-transition);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
}
.zb-btn:focus-visible {
    outline: 2px solid var(--zb-accent);
    outline-offset: 2px;
}

.zb-btn-primary {
    background: var(--zb-accent);
    color: var(--zb-surface);
    padding: 0.7rem 1.5rem;
    font-size: 0.95rem;
}
.zb-btn-primary:hover { background: var(--zb-accent-hover); color: var(--zb-surface); }

.zb-btn-secondary {
    background: var(--zb-surface);
    color: var(--zb-text);
    border: 1px solid var(--zb-border);
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
}
.zb-btn-secondary:hover { border-color: var(--zb-accent); color: var(--zb-accent); }

.zb-btn-ghost {
    background: transparent;
    color: var(--zb-accent);
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}
.zb-btn-ghost:hover { background: var(--zb-accent-light); }

.zb-btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }
.zb-btn-sm { padding: 0.4rem 0.85rem; font-size: 0.82rem; }
.zb-btn-xl { padding: 1rem 2.5rem; font-size: 1.05rem; border-radius: var(--zb-radius-lg); }

/* ==========================================================================
   5. HERO SECTION
   ========================================================================== */
.zb-hero {
    position: relative;
    padding: 5rem 0 4rem;
    text-align: center;
    overflow: hidden;
    background: var(--zb-surface);
}

.zb-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 640px;
    height: 640px;
    background: radial-gradient(circle, rgba(108, 77, 255, 0.14) 0%, rgba(234, 229, 255, 0.08) 50%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.zb-hero > .zb-container { position: relative; z-index: 1; }

.zb-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--zb-accent-light);
    border: 1px solid rgba(108, 77, 255, 0.2);
    padding: 0.3rem 0.9rem;
    border-radius: var(--zb-radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--zb-accent);
    margin-bottom: 1.5rem;
}

.zb-hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--zb-text);
    letter-spacing: -0.035em;
    line-height: 1.15;
    max-width: 780px;
    margin: 0 auto 1.25rem;
}

.zb-hero-title span { color: var(--zb-accent); }

.zb-hero-desc {
    font-size: 1.15rem;
    color: var(--zb-text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.65;
}

/* Hero search */
.zb-hero-search {
    max-width: 520px;
    margin: 0 auto 1.75rem;
    position: relative;
}

.zb-hero-search input {
    width: 100%;
    padding: 0.9rem 1.1rem 0.9rem 2.8rem;
    font-size: 0.95rem;
    font-family: var(--zb-font);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    background: var(--zb-surface);
    color: var(--zb-text);
    box-shadow: var(--zb-shadow-sm);
    outline: none;
    transition: border-color var(--zb-transition), box-shadow var(--zb-transition);
}
.zb-hero-search input:focus {
    border-color: var(--zb-accent);
    box-shadow: 0 0 0 3px var(--zb-accent-light);
}
.zb-hero-search input::placeholder { color: var(--zb-text-tertiary); }

.zb-hero-search-icon {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--zb-text-tertiary);
    pointer-events: none;
    display: flex;
}

.zb-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==========================================================================
   6. SECTION TITLES
   ========================================================================== */
.zb-section {
    padding: 4.5rem 0;
}

.zb-section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.zb-section-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--zb-accent);
    margin-bottom: 0.5rem;
}

.zb-section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--zb-text);
    letter-spacing: -0.025em;
    margin: 0 0 0.5rem;
}

.zb-section-desc {
    font-size: 1rem;
    color: var(--zb-text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ==========================================================================
   7. TOOL CARDS GRID
   ========================================================================== */
.zb-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 1.25rem;
}

.zb-tool-card {
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--zb-shadow-sm);
    transition: transform var(--zb-transition), box-shadow var(--zb-transition), border-color var(--zb-transition);
}

.zb-tool-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--zb-shadow-lg);
    border-color: rgba(108, 77, 255, 0.35);
}

.zb-tool-card:focus-visible {
    outline: 2px solid var(--zb-accent);
    outline-offset: 2px;
}

.zb-tool-card-icon {
    width: 46px;
    height: 46px;
    background: var(--zb-accent-light);
    color: var(--zb-accent);
    border-radius: var(--zb-radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.zb-tool-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.35rem;
}

.zb-tool-card-desc {
    font-size: 0.88rem;
    color: var(--zb-text-secondary);
    margin: 0 0 1.25rem;
    line-height: 1.55;
    flex: 1 0 auto;
}

.zb-tool-card-action {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--zb-accent);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.zb-tool-card:hover .zb-tool-card-action { gap: 0.5rem; }

/* ==========================================================================
   8. CATEGORY CARDS
   ========================================================================== */
.zb-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.zb-category-card {
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    padding: 1.5rem 1.25rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: all var(--zb-transition);
}

.zb-category-card:hover {
    border-color: var(--zb-accent);
    box-shadow: var(--zb-shadow-md);
    transform: translateY(-2px);
}

.zb-category-card-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
    color: var(--zb-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.zb-category-card-name {
    font-size: 0.92rem;
    font-weight: 650;
    color: var(--zb-text);
    margin: 0 0 0.2rem;
}

.zb-category-card-count {
    font-size: 0.78rem;
    color: var(--zb-text-tertiary);
}

/* ==========================================================================
   9. FEATURES / WHY USE
   ========================================================================== */
.zb-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.zb-feature-card {
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    padding: 1.75rem;
}

.zb-feature-icon {
    width: 42px;
    height: 42px;
    background: var(--zb-accent-light);
    color: var(--zb-accent);
    border-radius: var(--zb-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.zb-feature-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.35rem;
}

.zb-feature-desc {
    font-size: 0.88rem;
    color: var(--zb-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ==========================================================================
   10. HOW IT WORKS — Steps
   ========================================================================== */
.zb-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.zb-step { text-align: center; }

.zb-step-num {
    width: 48px;
    height: 48px;
    background: var(--zb-accent);
    color: var(--zb-surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0 auto 1rem;
}

.zb-step-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.35rem;
}

.zb-step-desc {
    font-size: 0.88rem;
    color: var(--zb-text-secondary);
    line-height: 1.55;
    margin: 0;
}

/* ==========================================================================
   11. FAQ ACCORDION
   ========================================================================== */
.zb-faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.zb-faq-item {
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-md);
    overflow: hidden;
}

.zb-faq-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--zb-text);
    text-align: left;
    line-height: 1.4;
    transition: background var(--zb-transition);
}
.zb-faq-btn:hover { background: var(--zb-accent-light); }

.zb-faq-chevron {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--zb-text-tertiary);
    transition: transform var(--zb-transition);
}

.zb-faq-item.is-open .zb-faq-chevron { transform: rotate(180deg); }

.zb-faq-answer {
    display: none;
    padding: 0 1.25rem 1rem;
    font-size: 0.9rem;
    color: var(--zb-text-secondary);
    line-height: 1.65;
}

.zb-faq-item.is-open .zb-faq-answer { display: block; }

/* ==========================================================================
   12. CTA SECTION
   ========================================================================== */
.zb-cta-section {
    background: radial-gradient(circle at 50% 0%, rgba(108, 77, 255, 0.25) 0%, transparent 65%), var(--zb-navy);
    padding: 4rem 1.5rem;
    text-align: center;
    border-radius: var(--zb-radius-xl);
    border: 1px solid rgba(108, 77, 255, 0.22);
    margin: 0 1.5rem 4rem;
    max-width: calc(var(--zb-max-width) - 3rem);
    margin-left: auto;
    margin-right: auto;
}

.zb-cta-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--zb-surface);
    letter-spacing: -0.02em;
    margin: 0 0 0.75rem;
}

.zb-cta-desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.65);
    margin: 0 auto 2rem;
    max-width: 480px;
    line-height: 1.6;
}

.zb-cta-section .zb-btn-primary {
    background: var(--zb-accent);
    color: var(--zb-surface);
}
.zb-cta-section .zb-btn-primary:hover {
    background: var(--zb-surface);
    color: var(--zb-text);
}

/* ==========================================================================
   13. FOOTER — Deep Navy (#171A2B)
   ========================================================================== */
.zb-footer {
    background: var(--zb-navy);
    color: rgba(255, 255, 255, 0.7);
    padding: 4.5rem 0 2.25rem;
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.zb-footer a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--zb-transition);
}
.zb-footer a:hover { color: var(--zb-lavender); }

.zb-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.zb-footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.75rem;
    text-decoration: none;
}

.zb-footer-logo-text {
    font-size: 1.2rem;
    font-weight: 750;
    color: var(--zb-surface);
}

.zb-footer-desc {
    font-size: 0.88rem;
    line-height: 1.65;
    max-width: 320px;
    margin: 0;
}

.zb-footer-col h4 {
    color: var(--zb-surface);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 1rem;
}

.zb-footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.zb-footer-links a { font-size: 0.88rem; }

.zb-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ==========================================================================
   14. BLOG LISTING
   ========================================================================== */
.zb-blog-hero {
    background: var(--zb-surface);
    padding: 3rem 0 2.5rem;
    text-align: center;
    border-bottom: 1px solid var(--zb-border);
}

.zb-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.zb-post-card {
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all var(--zb-transition);
}

.zb-post-card:hover {
    box-shadow: var(--zb-shadow-lg);
    transform: translateY(-2px);
    border-color: var(--zb-accent-glow);
}

.zb-post-card-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--zb-bg);
}

.zb-post-card-body { padding: 1.25rem 1.5rem 1.5rem; }

.zb-post-card-meta {
    font-size: 0.78rem;
    color: var(--zb-text-tertiary);
    margin-bottom: 0.5rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.zb-post-card-cat {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--zb-accent);
    background: var(--zb-accent-light);
    padding: 0.15rem 0.5rem;
    border-radius: var(--zb-radius-sm);
}

.zb-post-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.4rem;
    line-height: 1.35;
}

.zb-post-card-excerpt {
    font-size: 0.88rem;
    color: var(--zb-text-secondary);
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.zb-post-card-read {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--zb-accent);
    margin-top: 1rem;
}

/* Pagination */
.zb-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.zb-pagination a,
.zb-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    border-radius: var(--zb-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--zb-border);
    color: var(--zb-text);
    background: var(--zb-surface);
    text-decoration: none;
    transition: all var(--zb-transition);
}

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

.zb-pagination .current {
    background: var(--zb-accent);
    color: var(--zb-surface);
    border-color: var(--zb-accent);
}

/* ==========================================================================
   15. SINGLE POST
   ========================================================================== */
.zb-article {
    max-width: 740px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem;
}

.zb-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--zb-text-tertiary);
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
}

.zb-breadcrumb a { color: var(--zb-text-secondary); }
.zb-breadcrumb a:hover { color: var(--zb-accent); }
.zb-breadcrumb-sep { color: var(--zb-text-tertiary); }

.zb-article-header { margin-bottom: 2rem; }

.zb-article-cat {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--zb-accent);
    background: var(--zb-accent-light);
    padding: 0.2rem 0.6rem;
    border-radius: var(--zb-radius-sm);
    margin-bottom: 0.75rem;
}

.zb-article h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--zb-text);
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin: 0 0 0.75rem;
}

.zb-article-meta {
    font-size: 0.85rem;
    color: var(--zb-text-tertiary);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.zb-article-featured {
    width: 100%;
    border-radius: var(--zb-radius-lg);
    margin-bottom: 2rem;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

/* Article content — WordPress blocks */
.zb-article-content h2 {
    font-size: 1.55rem;
    font-weight: 750;
    color: var(--zb-text);
    margin: 2.5rem 0 0.75rem;
    letter-spacing: -0.015em;
}

.zb-article-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 2rem 0 0.6rem;
}

.zb-article-content h4 {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--zb-text);
    margin: 1.5rem 0 0.5rem;
}

.zb-article-content p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--zb-text-secondary);
    margin: 0 0 1.25rem;
}

.zb-article-content a { color: var(--zb-accent); text-decoration: underline; }
.zb-article-content a:hover { color: var(--zb-accent-hover); }

.zb-article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--zb-radius-md);
    margin: 1.5rem 0;
}

.zb-article-content ul,
.zb-article-content ol {
    padding-left: 1.5rem;
    margin: 0 0 1.25rem;
}

.zb-article-content li {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--zb-text-secondary);
    margin-bottom: 0.3rem;
}

.zb-article-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-left: 3px solid var(--zb-accent);
    background: var(--zb-accent-light);
    border-radius: 0 var(--zb-radius-md) var(--zb-radius-md) 0;
}

.zb-article-content blockquote p {
    color: var(--zb-text);
    margin: 0;
}

.zb-article-content pre {
    background: var(--zb-text);
    color: rgba(255, 255, 255, 0.85);
    padding: 1.25rem;
    border-radius: var(--zb-radius-md);
    overflow-x: auto;
    font-family: var(--zb-font-mono);
    font-size: 0.88rem;
    line-height: 1.6;
    margin: 1.5rem 0;
}

.zb-article-content code {
    font-family: var(--zb-font-mono);
    font-size: 0.88em;
    background: var(--zb-accent-light);
    color: var(--zb-accent);
    padding: 0.15em 0.4em;
    border-radius: 4px;
}

.zb-article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.zb-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.92rem;
    overflow-x: auto;
    display: block;
}

.zb-article-content th,
.zb-article-content td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--zb-border);
    text-align: left;
}

.zb-article-content th {
    background: var(--zb-bg);
    font-weight: 600;
    color: var(--zb-text);
}

.zb-article-content .wp-caption {
    max-width: 100%;
    margin: 1.5rem 0;
}

.zb-article-content .wp-caption-text,
.zb-article-content figcaption {
    font-size: 0.82rem;
    color: var(--zb-text-tertiary);
    text-align: center;
    margin-top: 0.4rem;
}

/* Related Posts */
.zb-related-posts {
    margin-top: 3.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--zb-border);
}

.zb-related-posts h2 {
    font-size: 1.35rem;
    font-weight: 750;
    color: var(--zb-text);
    margin: 0 0 1.25rem;
}

.zb-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

/* ==========================================================================
   16. STATIC PAGES (About, Contact, Privacy, Terms)
   ========================================================================== */
.zb-page-article {
    max-width: 760px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}

.zb-page-article h1 {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--zb-text);
    letter-spacing: -0.025em;
    margin: 0 0 1.25rem;
}

.zb-page-article h2 {
    font-size: 1.45rem;
    font-weight: 750;
    color: var(--zb-text);
    margin: 2.25rem 0 0.75rem;
}

.zb-page-article p,
.zb-page-article li {
    font-size: 1rem;
    color: var(--zb-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   17. 404 PAGE
   ========================================================================== */
.zb-404 {
    text-align: center;
    padding: 5rem 1.5rem;
    max-width: 520px;
    margin: 0 auto;
}

.zb-404-code {
    font-size: 5rem;
    font-weight: 900;
    color: var(--zb-border);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.zb-404-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--zb-text);
    margin-bottom: 0.75rem;
}

.zb-404-desc {
    font-size: 1rem;
    color: var(--zb-text-secondary);
    margin-bottom: 2rem;
}

/* ==========================================================================
   18. NO-POSTS EMPTY STATE
   ========================================================================== */
.zb-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
}

.zb-empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.25rem;
    color: var(--zb-text-tertiary);
}

.zb-empty-state-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.4rem;
}

.zb-empty-state-desc {
    font-size: 0.92rem;
    color: var(--zb-text-secondary);
    margin: 0;
}

/* ==========================================================================
   19. HUB HERO (PDF Tools directory)
   ========================================================================== */
.zb-hub-hero {
    background: var(--zb-surface);
    padding: 3rem 0 2.5rem;
    text-align: center;
    border-bottom: 1px solid var(--zb-border);
}

.zb-hub-title {
    font-size: 2.15rem;
    font-weight: 800;
    color: var(--zb-text);
    letter-spacing: -0.025em;
    margin: 0 0 0.5rem;
}

.zb-hub-desc {
    font-size: 1.02rem;
    color: var(--zb-text-secondary);
    margin: 0 auto;
    max-width: 580px;
    line-height: 1.6;
}

/* Info banner */
.zb-info-banner {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    background: var(--zb-surface);
    border: 1px solid var(--zb-border);
    border-radius: var(--zb-radius-lg);
    padding: 1.5rem;
    margin-top: 2.5rem;
}

.zb-info-banner-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--zb-accent-light);
    color: var(--zb-accent);
    border-radius: var(--zb-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.zb-info-banner h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--zb-text);
    margin: 0 0 0.3rem;
}

.zb-info-banner p {
    font-size: 0.88rem;
    color: var(--zb-text-secondary);
    margin: 0;
    line-height: 1.55;
}

/* ==========================================================================
   20. RESPONSIVE
   ========================================================================== */
@media (max-width: 900px) {
    .zb-footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .zb-steps { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 768px) {
    .zb-hero-title { font-size: 2.2rem; }
    .zb-hero { padding: 3.5rem 0 3rem; }
    .zb-section { padding: 3rem 0; }
    .zb-section-title { font-size: 1.65rem; }
    .zb-cta-section { margin: 0 1rem 3rem; border-radius: var(--zb-radius-lg); }
    .zb-cta-title { font-size: 1.5rem; }

    .zb-nav-list {
        display: none;
        position: fixed;
        top: var(--zb-header-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--zb-surface);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0.25rem;
        overflow-y: auto;
        z-index: 999;
    }
    .zb-nav-list.is-open { display: flex; }
    .zb-nav-link { padding: 0.8rem 1rem; font-size: 1rem; }
    .zb-nav-cta { margin: 0.75rem 0 0; text-align: center; display: block; padding: 0.75rem; }
    .zb-menu-toggle { display: flex; }

    .zb-footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .zb-posts-grid { grid-template-columns: 1fr; }
    .zb-categories-grid { grid-template-columns: repeat(2, 1fr); }

    .zb-article h1 { font-size: 1.75rem; }
    .zb-article { padding: 2rem 1.25rem 3rem; }
}

@media (max-width: 480px) {
    .zb-hero-title { font-size: 1.8rem; }
    .zb-hero-actions { flex-direction: column; }
    .zb-hero-actions .zb-btn { width: 100%; }
    .zb-categories-grid { grid-template-columns: 1fr 1fr; }
    .zb-tools-grid { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}