/* ============================================
   NoBudgetPC.xyz - Improved UI/UX Stylesheet
   Better Navigation, Accessibility & Readability
   ============================================ */

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0b0f19;
    --darker-bg: #050810;
    --card-bg: #151b2b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #2d3748;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --ad-bg: #f8fafc;
    --max-width: 1280px;
    --header-height: 70px;
    --content-width: 800px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 2rem;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 16px;
}

/* ============================================
   IMPROVED HEADER - NON-STICKY, CLEAN
   ============================================ */

header {
    background: var(--darker-bg);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    position: relative; /* Changed from fixed to relative */
    width: 100%;
    top: 0;
    z-index: 100;
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.5px;
}

.logo::before {
    content: "◆";
    font-size: 1.4rem;
    -webkit-text-fill-color: var(--primary-color);
}

/* Enhanced Navigation */
.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width var(--transition-base);
    border-radius: 2px;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--card-bg);
}

/* ============================================
   BREADCRUMB NAVIGATION - NEW
   ============================================ */

.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    background: var(--darker-bg);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--border-color);
    font-size: 0.75rem;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   IMPROVED HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    padding: 4rem 2rem 5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.cta-button-secondary {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: none;
}

.cta-button-secondary:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: none;
}

/* ============================================
   AD CONTAINERS - OPTIMIZED & LESS INTRUSIVE
   ============================================ */

.ad-container {
    background: var(--ad-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 2.5rem 0;
    text-align: center;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 0.875rem;
    position: relative;
}

.ad-label {
    position: absolute;
    top: -0.75rem;
    left: 1rem;
    background: var(--dark-bg);
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.ad-sidebar {
    position: sticky;
    top: 2rem;
    margin-bottom: 2rem;
}

.ad-in-article {
    margin: 3rem auto;
    max-width: 728px;
}

/* ============================================
   MAIN CONTENT LAYOUT - IMPROVED
   ============================================ */

.main-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 2rem;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 4rem;
    align-items: start;
}

.content-area {
    min-width: 0;
    max-width: 100%;
}

.sidebar {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* ============================================
   ARTICLE CARDS - ENHANCED HOVER STATES
   ============================================ */

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 1.75rem;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.view-all {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap var(--transition-fast);
}

.view-all:hover {
    gap: 0.5rem;
    text-decoration: underline;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.article-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.article-card:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.article-image {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    overflow: hidden;
}

.article-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.5) 100%);
}

.article-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    width: fit-content;
    transition: all var(--transition-fast);
}

.article-card:hover .article-category {
    background: var(--primary-color);
    color: white;
}

.article-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
    color: var(--text-primary);
    font-weight: 600;
}

.article-card h3 a {
    color: inherit;
    text-decoration: none;
    background-image: linear-gradient(var(--primary-color), var(--primary-color));
    background-position: 0% 100%;
    background-repeat: no-repeat;
    background-size: 0% 2px;
    transition: background-size var(--transition-base);
}

.article-card h3 a:hover {
    background-size: 100% 2px;
}

.article-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.read-more:hover {
    gap: 0.75rem;
    color: var(--accent-color);
}

.read-more::after {
    content: "→";
    transition: transform var(--transition-fast);
}

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

.article-meta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* ============================================
   SINGLE POST NAVIGATION - NEW
   ============================================ */

.post-navigation {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 1.5rem;
    margin: 3rem 0;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.post-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
    max-width: 48%;
}

.post-nav-item:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
}

.post-nav-item.prev {
    align-items: flex-start;
    text-align: left;
}

.post-nav-item.next {
    align-items: flex-end;
    text-align: right;
    margin-left: auto;
}

.post-nav-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.post-nav-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   TABLE OF CONTENTS - NEW
   ============================================ */

.toc {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    position: sticky;
    top: 2rem;
    margin-bottom: 2rem;
}

.toc-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.toc-list li {
    position: relative;
    padding-left: 1rem;
}

.toc-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
}

.toc-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    display: block;
    padding: 0.25rem 0;
}

.toc-list a:hover {
    color: var(--primary-color);
    padding-left: 0.25rem;
}

/* ============================================
   IMPROVED ARTICLE CONTENT READABILITY
   ============================================ */

.article-header {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.article-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.article-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.article-body {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: var(--content-width);
    margin: 0 auto;
}

.article-body h2 {
    font-size: 1.875rem;
    color: var(--text-primary);
    margin: 2.5rem 0 1rem;
    font-weight: 700;
    line-height: 1.3;
    scroll-margin-top: 2rem;
}

.article-body h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 2rem 0 1rem;
    font-weight: 600;
    scroll-margin-top: 2rem;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body a {
    color: var(--primary-color);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
    transition: all var(--transition-fast);
}

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

.article-body ul,
.article-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--text-muted);
    background: rgba(99, 102, 241, 0.05);
    padding: 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-body code {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--accent-color);
}

.article-body pre {
    background: var(--darker-bg);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

/* ============================================
   TAGS & CATEGORIES
   ============================================ */

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.875rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* ============================================
   BACK TO TOP BUTTON - NEW
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    border: none;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    font-size: 1.25rem;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    background: var(--secondary-color);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .sidebar {
        order: 2;
    }
    
    .content-area {
        order: 1;
    }
    
    .ad-sidebar {
        position: relative;
        top: 0;
    }
    
    .toc {
        position: relative;
        top: 0;
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--darker-bg);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        padding: 3rem 1.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .main-container {
        padding: 2rem 1rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .article-title {
        font-size: 1.75rem;
    }
    
    .article-body {
        font-size: 1rem;
    }
    
    .post-navigation {
        flex-direction: column;
    }
    
    .post-nav-item {
        max-width: 100%;
    }
    
    .post-nav-item.next {
        align-items: flex-start;
        text-align: left;
        margin-left: 0;
    }
    
    .breadcrumb {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 1rem;
        right: 1rem;
    }
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2px solid var(--primary-color);
    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-width: 0;
}

/* ============================================
   LOADING STATES & SKELETONS
   ============================================ */

.skeleton {
    background: linear-gradient(90deg, var(--card-bg) 25%, rgba(99, 102, 241, 0.1) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   SEARCH BAR - NEW
   ============================================ */

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-input {
    width: 100%;
    padding: 1rem 1.25rem;
    padding-left: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}