/* ===========================================================
   ToolForge — Design System v3 (Final Professional)
   Complete rewrite — deep debug
   =========================================================== */

:root {
    --color-bg: #ffffff;
    --color-surface: #f8fafc;
    --color-surface-alt: #f1f5f9;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-divider: #f1f5f9;

    --color-primary: #0f766e;
    --color-primary-dark: #115e59;
    --color-primary-light: #ccfbf1;
    --color-accent: #f97316;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    --gradient-primary: linear-gradient(135deg, #0f766e 0%, #0e7490 100%);
    --gradient-accent: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    --gradient-hero: linear-gradient(135deg, #102a43 0%, #0f766e 58%, #155e75 100%);
    --gradient-card: linear-gradient(145deg, #ffffff, #f8fafc);

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
    --shadow-glow: 0 0 20px rgba(15,118,110,0.14);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;
    --font-accent: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    --max-width: 1200px;
    --gutter: 1.5rem;
    --gutter-sm: 1rem;
    --gutter-lg: 2.5rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Typography */
h1,h2,h3,h4,h5,h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}
h1 { font-size: clamp(1.75rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }
p { margin-bottom: 1rem; color: var(--color-text); }

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }
button, input, textarea, select { font: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 3px solid rgba(15,118,110,0.35);
    outline-offset: 2px;
}
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
    position: fixed; top: 0.75rem; left: 0.75rem; z-index: 2000;
    padding: 0.65rem 1rem; color: #fff; background: var(--color-text);
    border-radius: var(--radius-md); transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); color: #fff; text-decoration: none; }

/* === CONTAINER === */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--gutter) * 1.5);
}
.section { padding: var(--gutter-lg) 0; }
.section-title { text-align: center; margin-bottom: 0.5rem; }
.section-subtitle {
    text-align: center; color: var(--color-text-muted);
    max-width: 40rem; margin: 0 auto var(--gutter);
}

/* === BUTTONS === */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; font-weight: 600; font-size: 0.9rem;
    padding: 0.65rem 1.5rem; border-radius: var(--radius-md);
    border: none; cursor: pointer; transition: all 0.25s ease;
    text-decoration: none; white-space: nowrap; font-family: var(--font-sans);
}
.btn-primary {
    background: var(--gradient-primary); color: #fff;
    box-shadow: 0 4px 14px rgba(99,102,241,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(99,102,241,0.45); }
.btn-white {
    background: rgba(255,255,255,0.15); color: #fff;
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(8px);
}
.btn-white:hover { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.5); color:#fff; }
.btn-outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-sm { padding: 0.4rem 1rem; font-size: 0.8rem; }

/* === HEADER === */
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; padding: 0 var(--gutter);
    max-width: var(--max-width);
    margin: 0 auto;
}
.logo {
    display: flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-heading); font-weight: 800;
    font-size: 1.5rem; color: var(--color-text); text-decoration: none;
    line-height: 1.2; padding: 0.5rem 0;
}
.logo .logo-img { 
    width: auto; 
    height: 2.25rem; 
    max-width: 180px;
    flex: 0 0 auto; 
    object-fit: contain; 
    vertical-align: middle;
} /* full logo image: icon + wordmark */
.logo-mark { 
    width: 2.25rem; 
    height: 2.25rem; 
    flex: 0 0 2.25rem; 
    object-fit: contain; 
    border-radius: 0.5rem;
    vertical-align: middle;
    display: flex;
    align-items: center;
    justify-content: center;
}
.logo .logo-mark-fallback { 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    color: #fff; 
    -webkit-text-fill-color: #fff; 
    background: var(--gradient-primary); 
    font-size: 1.1rem; 
    font-weight: 800;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.5rem;
    line-height: 1;
}
.logo span { 
    background: var(--gradient-primary); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    background-clip: text;
    vertical-align: middle;
    line-height: 1.2;
}

.mobile-menu-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.mobile-menu-toggle span { width: 24px; height: 2.5px; background: var(--color-text); border-radius: 2px; }

.primary-nav { display: flex; align-items: center; gap: 2.5rem; }
.primary-nav a {
    font-weight: 600; color: var(--color-text-muted); padding: 0.5rem 0;
    position: relative; font-size: 0.95rem;
    text-decoration: none;
    transition: color 0.2s ease;
    line-height: 1;
}
.primary-nav a:hover { color: var(--color-primary); }
.primary-nav a::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 0; height: 2px; background: var(--gradient-primary);
    transition: width 0.3s ease;
}
.primary-nav a:hover::after, .primary-nav a.active::after { width: 100%; }
.primary-nav a.active { color: var(--color-primary); font-weight: 600; }

.nav-search { display: flex; align-items: center; gap: 0; }
.nav-search input {
    padding: 0.6rem 1rem; border: 2px solid var(--color-border);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: 0.875rem; background: var(--color-surface);
    color: var(--color-text); width: 200px; transition: all 0.25s;
    font-family: var(--font-sans);
    height: 40px;
}
.nav-search input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); background: #fff; }
.nav-search button {
    background: var(--color-primary); color: #fff; border: 2px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 0.6rem 1rem; cursor: pointer; font-weight: 600; font-size: 0.875rem;
    transition: background 0.25s; font-family: var(--font-sans);
    height: 40px;
}
.nav-search button:hover { background: var(--color-primary-dark); }
.nav-search button:focus-visible { outline-color: rgba(255,255,255,0.8); }

/* === HERO === */
.hero {
    position: relative; overflow: hidden;
    background: var(--gradient-hero); color: #fff;
    padding: clamp(4rem, 10vh, 8rem) 0; min-height: 500px;
    display: flex; align-items: center;
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background: url('../images/hero-illustration.svg') center/contain no-repeat;
    opacity: 0.12; pointer-events: none;
    background-size: 500px auto; background-position: right center;
}
.hero::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(99,102,241,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.hero .container {
    position: relative; z-index: 2;
    display: flex; flex-wrap: wrap; align-items: center; gap: clamp(2rem, 7vw, 6rem);
}
.hero-text { flex: 1 1 360px; max-width: 500px; }
.hero-text h1 { color: #fff; font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
.hero-text .tagline {
    font-size: clamp(1rem, 2vw, 1.25rem); color: rgba(255,255,255,0.9); opacity: 1;
    max-width: 32rem; margin-bottom: 1.5rem; line-height: 1.7;
    font-family: var(--font-sans);
}
.hero-search { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; max-width: 500px; }
.hero-search input {
    flex: 1; padding: 0.75rem 1rem; border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-md); font-size: 1rem;
    background: rgba(255,255,255,0.1); color: #fff;
    font-family: var(--font-sans); transition: all 0.25s;
    backdrop-filter: blur(8px);
}
.hero-search input::placeholder { color: rgba(255,255,255,0.6); }
.hero-search input:focus { outline: none; border-color: rgba(255,255,255,0.6); background: rgba(255,255,255,0.15); }
.hero-search button {
    background: rgba(255,255,255,0.2); color: #fff; border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-md); padding: 0.75rem 1.5rem;
    cursor: pointer; font-weight: 600; font-size: 0.9rem;
    transition: background 0.25s; font-family: var(--font-sans);
}
.hero-search button:hover { background: rgba(255,255,255,0.35); }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.hero-actions .btn-outline { color: #fff; border-color: rgba(255,255,255,0.55); }
.hero-actions .btn-outline:hover { background: #fff; color: var(--color-primary-dark); border-color: #fff; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(255,255,255,0.15); color: #fff;
    padding: 0.35rem 1rem; border-radius: var(--radius-full);
    font-size: 0.85rem; font-weight: 600; backdrop-filter: blur(8px);
    margin-bottom: 1rem; display: inline-block;
}
.hero-category-slider { flex: 1 1 360px; min-width: 0; max-width: 510px; }
.hero-slider-viewport { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,0.22); border-radius: var(--radius-xl); background: rgba(255,255,255,0.09); box-shadow: 0 24px 60px rgba(3, 30, 42, 0.22); backdrop-filter: blur(10px); }
.hero-slider-track { display: grid; }
.hero-category-slide { grid-area: 1 / 1; display: grid; grid-template-rows: auto minmax(10rem, 15rem) auto; min-width: 0; padding: 1rem; color: #fff; opacity: 0; pointer-events: none; transform: translateX(1.5rem); transition: opacity 0.45s ease, transform 0.45s ease; text-decoration: none; }
.hero-category-slide.is-active { opacity: 1; pointer-events: auto; transform: translateX(0); }
.hero-category-slide:hover { color: #fff; text-decoration: none; }
.hero-category-slide img { width: 100%; height: 100%; min-height: 10rem; object-fit: contain; border-radius: var(--radius-lg); }
.hero-slide-label { color: rgba(255,255,255,0.65); font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; }
.hero-slide-content { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.35rem 0.75rem; padding: 1rem 0.25rem 0.25rem; }
.hero-slide-content strong { flex: 1 1 100%; color: #fff; font-family: var(--font-heading); font-size: 1.35rem; }
.hero-slide-content span { flex: 1 1 12rem; color: rgba(255,255,255,0.74); font-size: 0.82rem; line-height: 1.45; }
.hero-slide-content em { color: #99f6e4; font-size: 0.78rem; font-style: normal; font-weight: 700; white-space: nowrap; }
.hero-slider-controls { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin-top: 0.85rem; }
.hero-slider-arrow { display: inline-flex; align-items: center; justify-content: center; width: 2.25rem; height: 2.25rem; border: 1px solid rgba(255,255,255,0.28); border-radius: 50%; color: #fff; background: rgba(255,255,255,0.1); cursor: pointer; transition: background 0.2s, transform 0.2s; }
.hero-slider-arrow:hover { background: rgba(255,255,255,0.24); transform: translateY(-1px); }
.hero-slider-dots { display: flex; align-items: center; justify-content: center; gap: 0.45rem; }
.hero-slider-dot { width: 0.45rem; height: 0.45rem; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,0.38); cursor: pointer; transition: width 0.2s, background 0.2s; }
.hero-slider-dot.is-active { width: 1.35rem; border-radius: var(--radius-full); background: #99f6e4; }

/* === NAVIGATION AND TOOL CONTROLS === */
.breadcrumbs { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 1rem var(--gutter); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; list-style: none; color: var(--color-text-muted); font-size: 0.8rem; }
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before { content: '/'; margin-right: 0.4rem; color: var(--color-border); }
.breadcrumbs a { color: var(--color-text-muted); }
.breadcrumbs a:hover { color: var(--color-primary); }

/* === GRID LAYOUTS === */
.tool-grid, .category-grid, .post-grid, .feature-grid {
    display: grid; gap: var(--gutter);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
}

/* === TOOL CARD === */
.tool-card {
    display: flex; flex-direction: column;
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); overflow: hidden;
    text-decoration: none; color: var(--color-text);
    transition: all 0.3s ease;
}
.tool-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: var(--color-primary-light); }
.tool-card-thumbnail {
    width: 100%; height: 180px; overflow: hidden;
    background: var(--color-surface-alt);
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--color-border);
}
.tool-card-thumbnail img {
    width: 100%; height: 100%; object-fit: contain; padding: 1.5rem;
    transition: transform 0.3s ease;
}
.tool-card:hover .tool-card-thumbnail img { transform: scale(1.05); }
.tool-card-content { padding: 1.25rem; display: flex; flex-direction: column; flex: 1; }
.tool-card-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
.tool-card-desc { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1rem; line-height: 1.4; flex: 1; }
.tool-card-footer {
    margin-top: auto; padding-top: 0.75rem; border-top: 1px solid var(--color-border);
    font-size: 0.85rem; color: var(--color-primary); font-weight: 600;
    display: flex; align-items: center; gap: 0.4rem;
}

/* === CATEGORY CARD === */
.category-card {
    display: flex; flex-direction: column;
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); overflow: hidden;
    text-decoration: none; color: var(--color-text);
    transition: all 0.3s ease;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: var(--color-primary-light); }
.category-card-header {
    width: 100%; height: 160px; overflow: hidden;
    background: var(--color-surface-alt);
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--color-border);
}
.category-card-header img,
.category-card-header svg {
    width: 100%; height: 100%; object-fit: contain; padding: 1.5rem;
}
.category-card-content { padding: 1.25rem; display: flex; flex-direction: column; flex: 1; }
.category-card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.4rem; }
.category-card-desc { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1rem; line-height: 1.4; flex: 1; }
.category-card-footer {
    margin-top: auto; padding-top: 0.75rem; border-top: 1px solid var(--color-border);
    font-size: 0.85rem; color: var(--color-primary); font-weight: 600;
}

/* === FEATURE CARD === */
.feature-card {
    display: flex; flex-direction: column; align-items: center; text-align: center;
    background: var(--color-surface); border: 2px solid var(--color-border);
    border-radius: var(--radius-lg); padding: 2rem 1.5rem;
    text-decoration: none; color: var(--color-text);
    transition: all 0.3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: var(--color-primary); }
.feature-card-icon {
    width: 72px; height: 72px; display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.25rem; border-radius: var(--radius-xl);
    background: var(--color-primary-light);
}
.feature-card-icon svg { width: 40px; height: 40px; }
.feature-card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
.feature-card-desc { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.5; }

/* === POST CARD === */
.post-card {
    display: flex; flex-direction: column;
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); overflow: hidden;
    text-decoration: none; color: var(--color-text);
    transition: all 0.3s ease;
}

.post-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.featured-post {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 40%);
    align-items: stretch;
    margin-bottom: 2rem;
}

.featured-post .post-card-thumbnail {
    grid-column: 2;
    grid-row: 1;
    height: auto;
    min-height: 260px;
    padding: 1rem;
    border-bottom: 0;
    border-left: 1px solid var(--color-border);
}

.featured-post .post-card-thumbnail img {
    object-fit: contain;
    border-radius: var(--radius-md);
}

.featured-post .post-card-content {
    grid-column: 1;
    grid-row: 1;
    justify-content: center;
    padding: clamp(1.5rem, 4vw, 2.75rem);
}

.featured-post .post-card-title {
    font-size: clamp(1.35rem, 2.5vw, 2rem);
    max-width: 38rem;
}

.featured-post .post-card-excerpt {
    max-width: 42rem;
}

/* === BLOG THUMBNAIL === */
.post-card-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    overflow: hidden;
    background: var(--color-surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
}

.post-card-thumbnail img,
.post-card-thumbnail svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.post-card-content {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.post-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.post-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}

.post-card-excerpt {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    flex: 1;
}

/* === BLOG ARTICLE === */
.container.section.blog-article {
    max-width: 52rem;
    padding: clamp(2rem, 5vw, 4rem) var(--gutter);
}

.blog-article-header {
    max-width: 48rem;
    margin: 0 auto 1.5rem;
    text-align: center;
}

.blog-article-header h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    line-height: 1.1;
    margin-bottom: 1rem;
}

.blog-article-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem 0.65rem;
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.blog-article-meta a {
    color: var(--color-primary);
    font-weight: 600;
}

.blog-article-hero {
    margin: 0 auto 2.5rem;
    padding: 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.blog-article-hero img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 34rem;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.post-content {
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.85;
    font-size: 1.03rem;
}

.post-content > * + * {
    margin-top: 1.15rem;
}

.post-content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 1.5rem auto;
    border-radius: var(--radius-md);
}

.post-content h2,
.post-content h3 {
    margin-top: 2rem;
}

.post-content ul,
.post-content ol {
    padding-left: 1.35rem;
}

.post-content a {
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.post-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--color-primary);
    background: var(--color-surface);
    color: var(--color-text-muted);
}

.post-content pre {
    max-width: 100%;
    overflow-x: auto;
    padding: 1rem;
    background: #0f172a;
    color: #e2e8f0;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.post-content :not(pre) > code {
    padding: 0.15rem 0.35rem;
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
    border-radius: 4px;
}

.post-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
}

.post-content th,
.post-content td {
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--color-border);
    text-align: left;
}

.post-content th {
    background: var(--color-surface);
}

.related-posts {
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* === ABOUT PAGE === */
.about-intro {
    position: relative; overflow: hidden; color: #fff;
    background: var(--gradient-hero); border-bottom: 1px solid rgba(255,255,255,0.12);
}
.about-intro::after {
    content: ''; position: absolute; width: 28rem; height: 28rem; right: -10rem; top: -14rem;
    border: 1px solid rgba(255,255,255,0.12); border-radius: 50%; box-shadow: 0 0 0 3rem rgba(255,255,255,0.03), 0 0 0 6rem rgba(255,255,255,0.02);
    pointer-events: none;
}
.about-intro-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 3rem; min-height: 26rem; padding-top: 4.5rem; padding-bottom: 4.5rem; }
.about-intro-copy { max-width: 42rem; }
.about-eyebrow, .about-block-kicker { display: block; margin-bottom: 0.85rem; color: var(--color-accent); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.about-intro h1 { max-width: 38rem; margin-bottom: 1rem; color: #fff; font-size: clamp(2.25rem, 5vw, 4rem); line-height: 1.05; }
.about-intro p { max-width: 36rem; margin-bottom: 1.5rem; color: rgba(255,255,255,0.82); font-size: 1.1rem; line-height: 1.7; }
.about-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.about-actions .btn-outline { color: #fff; border-color: rgba(255,255,255,0.55); }
.about-actions .btn-outline:hover { background: #fff; color: var(--color-primary-dark); }
.about-intro-mark { display: flex; flex: 0 0 12rem; flex-direction: column; align-items: center; justify-content: center; width: 12rem; height: 12rem; border: 1px solid rgba(255,255,255,0.28); border-radius: 50%; background: rgba(255,255,255,0.08); box-shadow: 0 0 0 1rem rgba(255,255,255,0.03); transform: rotate(7deg); }
.about-intro-mark span { font-family: var(--font-heading); color: #fff; font-size: 3.5rem; font-weight: 800; line-height: 1; }
.about-intro-mark small { margin-top: 0.75rem; color: rgba(255,255,255,0.72); font-family: var(--font-mono); font-size: 0.7rem; line-height: 1.5; text-align: center; text-transform: uppercase; }
.about-section { padding-top: clamp(2.5rem, 6vw, 5rem); padding-bottom: clamp(3rem, 7vw, 6rem); }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 52rem; margin: 0 auto clamp(2.5rem, 6vw, 5rem); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.about-stat { padding: 1.35rem 1rem; text-align: center; }
.about-stat + .about-stat { border-left: 1px solid var(--color-border); }
.about-stat strong { display: block; color: var(--color-primary-dark); font-family: var(--font-heading); font-size: 2rem; line-height: 1.1; }
.about-stat span { display: block; margin-top: 0.35rem; color: var(--color-text-muted); font-size: 0.78rem; font-weight: 600; }
.about-content-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; max-width: 64rem; margin: 0 auto; }
.about-content-block { padding: clamp(1.35rem, 3vw, 2rem); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.about-content-featured { grid-row: span 2; background: linear-gradient(145deg, var(--color-primary-light), var(--color-surface)); border-color: rgba(15,118,110,0.22); }
.about-content-block h2 { margin-bottom: 0.8rem; font-size: 1.35rem; }
.about-content-block p { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.7; }
.about-content-block p:last-child { margin-bottom: 0; }

/* === SHARED CONTENT AND TOOL UI === */
.tool-page-header { padding: clamp(2rem, 5vw, 4rem) 0 1.5rem; max-width: 48rem; }
.tool-page-header h1 { margin-bottom: 0.75rem; }
.tool-desc { color: var(--color-text-muted); font-size: 1.05rem; max-width: 42rem; }
.tool-interface, .content-block {
    width: 100%; max-width: 54rem; margin: 0 auto 2rem;
    padding: clamp(1rem, 3vw, 2rem); background: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.tool-interface label { display: block; margin-bottom: 0.4rem; font-weight: 600; font-size: 0.9rem; }
.tool-interface input, .tool-interface textarea, .tool-interface select,
.content-block input, .content-block textarea, .content-block select {
    width: 100%; min-width: 0; padding: 0.7rem 0.8rem; color: var(--color-text);
    background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md);
}
.tool-interface textarea, .content-block textarea { min-height: 8rem; resize: vertical; }
.tool-interface input[type="checkbox"], .tool-interface input[type="radio"] { width: auto; }
.tool-interface .stat-row {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem; margin-top: 1rem;
}
.tool-interface .stat {
    min-width: 0; padding: 0.85rem 0.65rem; text-align: center;
    background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md);
}
.tool-interface .stat-value { color: var(--color-primary-dark); font-size: 1.35rem; font-weight: 800; line-height: 1.2; overflow-wrap: anywhere; }
.tool-interface .stat-label { margin-top: 0.25rem; color: var(--color-text-muted); font-size: 0.72rem; line-height: 1.25; }
.tool-controls { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }
.btn-secondary { background: var(--color-text); color: #fff; }
.btn-secondary:hover { background: #1e293b; color: #fff; transform: translateY(-1px); }
.related-tools { max-width: 54rem; margin: 2.5rem auto; }
.related-tools h2 { margin-bottom: 1rem; }
.content-block { line-height: 1.75; }
.content-block h2 { margin-bottom: 0.75rem; }
.content-block ol, .content-block ul { padding-left: 1.35rem; }
.content-block li + li { margin-top: 0.45rem; }
.faq-item + .faq-item { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--color-border); }
.faq-item h3 { font-size: 1rem; margin-bottom: 0.3rem; }

/* === FOOTER === */
.site-footer {
    background: var(--color-surface); border-top: 1px solid var(--color-border);
    margin-top: auto;
}
.site-footer .footer-inner {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--gutter-lg); padding: 3rem var(--gutter);
    align-items: start;
}
.footer-col h4 { font-size: 1rem; font-weight: 700; margin-bottom: 1rem; color: var(--color-text); }
.site-footer .logo { 
    margin-bottom: 0.75rem; 
    display: inline-block;
    align-self: flex-start;
}
.site-footer .logo .logo-img { 
    height: 2rem; 
    max-width: 140px;
} /* smaller logo in footer */
.footer-col a { display: block; margin-bottom: 0.5rem; color: var(--color-text-muted); font-size: 0.9rem; }
.footer-col a:hover { color: var(--color-primary); }
.site-footer .footer-bottom {
    text-align: center; padding: 1.5rem var(--gutter);
    font-size: 0.85rem; color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
}
.admin-stealth-link {
    display: inline-block;
    margin-left: 0.35rem;
    opacity: 0.15;
    font-size: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.25s ease, transform 0.25s ease;
    vertical-align: middle;
}
.admin-stealth-link:hover,
.admin-stealth-link:focus-visible {
    opacity: 0.85;
    transform: scale(1.15);
    outline: none;
}

/* === EMPTY STATE === */
.empty-state { text-align: center; padding: 4rem 2rem; }
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.empty-state p { color: var(--color-text-muted); }

/* === BADGES === */
.badge {
    display: inline-block; padding: 0.25rem 0.75rem; border-radius: var(--radius-full);
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
}
.badge-published, .badge-active { background: #ecfdf5; color: #065f46; }
.badge-draft { background: #fef3c7; color: #92400e; }
.badge-inactive { background: #f3f4f6; color: #6b7280; }

/* === RESPONSIVE === */
@media (max-width: 900px) {
    .primary-nav { gap: 1rem; }
    .nav-search input { width: 145px; }
}
@media (max-width: 768px) {
    .container { padding: 0 var(--gutter-sm); }
    .container.section.blog-article { padding-inline: var(--gutter-sm); }
    .header-inner { min-height: 64px; height: auto; padding-block: 0.4rem; }
    .logo .logo-img { height: 2.25rem; } /* slightly smaller on mobile */
    .hero { padding: 3.5rem 0; min-height: 0; }
    .hero .container { flex-direction: column; gap: 2.25rem; text-align: center; }
    .hero-text { max-width: 100%; }
    .hero-search { flex-direction: column; max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero-category-slider { width: 100%; max-width: 34rem; text-align: left; }
    .hero-category-slide { grid-template-rows: auto minmax(9rem, 13rem) auto; }
    .mobile-menu-toggle { display: flex; }
    .mobile-menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(7.5px) rotate(45deg); }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-7.5px) rotate(-45deg); }
    .mobile-menu-toggle span { transition: transform 0.2s, opacity 0.2s; }
    .primary-nav {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 0;
        padding: 0.75rem var(--gutter-sm) 1rem; background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px); border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-lg);
    }
    .primary-nav.is-open {
        display: flex;
        z-index: 1100;
    }
    .primary-nav a { padding: 0.7rem 0; }
    .primary-nav a::after { bottom: 0.35rem; }
    .nav-search { margin-top: 0.5rem; }
    .nav-search input { width: 100%; }
    .nav-search button { padding-inline: 1.1rem; }
    .hero-search { width: 100%; }
    .hero-actions .btn { flex: 1 1 12rem; }
    .post-card-meta { flex-wrap: wrap; gap: 0.5rem 1rem; }
    .featured-post { display: flex; flex-direction: column; }
    .featured-post .post-card-thumbnail { order: 1; min-height: 0; height: 220px; border-left: 0; border-bottom: 1px solid var(--color-border); padding: 0.75rem; }
    .featured-post .post-card-content { order: 2; padding: 1.35rem; }
    .footer-inner { grid-template-columns: 1fr; text-align: center; }
    .footer-col { margin-bottom: 1rem; }
    .about-intro-inner { align-items: flex-start; flex-direction: column; min-height: 0; gap: 2rem; padding-top: 3.5rem; padding-bottom: 3.5rem; }
    .about-intro::after { display: none; }
    .about-intro h1 { font-size: clamp(2.25rem, 10vw, 3.25rem); }
    .about-intro p { font-size: 1rem; }
    .about-intro-mark { align-self: flex-end; width: 8rem; height: 8rem; flex-basis: 8rem; }
    .about-intro-mark span { font-size: 2.35rem; }
    .about-content-grid { grid-template-columns: 1fr; }
    .about-content-featured { grid-row: auto; }
}
@media (max-width: 480px) {
    .hero { min-height: 380px; padding: 2rem 0; }
    .tool-grid, .category-grid, .post-grid, .feature-grid { grid-template-columns: 1fr; }
    .section { padding: var(--gutter) 0; }
    .hero-text h1 { font-size: 2rem; }
    .hero-actions .btn { width: 100%; }
    .hero-category-slide { padding: 0.75rem; grid-template-rows: auto minmax(8rem, 10rem) auto; }
    .hero-slide-content strong { font-size: 1.15rem; }
    .tool-card-thumbnail { height: 150px; }
    .category-card-header { height: 135px; }
    .post-card-thumbnail { height: 165px; }
    .about-stats { grid-template-columns: 1fr; }
    .about-stat + .about-stat { border-top: 1px solid var(--color-border); border-left: 0; }
    .about-actions .btn { width: 100%; }
    .tool-interface .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; }
    .tool-interface .stat { padding-inline: 0.45rem; }
}

/* === ANIMATIONS === */
@keyframes fadeIn { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
.fade-in { animation: fadeIn 0.6s ease-out forwards; }

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

/* === PRINT === */
@media print {
    .site-header, .mobile-menu-toggle, .hero-actions, .btn { display: none !important; }
    .container { max-width: none; padding: 0; }
    a { color: black; }
}