/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-bg: #0a0a0f;
    --secondary-bg: #0d1117;
    --accent-bg: #16213e;
    --card-bg: #0f1923;
    --primary-purple: #8b5cf6;
    --primary-blue: #3b82f6;
    --accent-purple: #a855f7;
    --accent-blue: #60a5fa;
    --accent-green: #00ff41;
    --matrix-green: #00ff41;
    --matrix-dim: #003b0d;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #1e293b;
    --hover-bg: #1e293b;
    --gradient-primary: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    --gradient-secondary: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    --gradient-accent: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    --gradient-danger: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
    --shadow-primary: 0 10px 25px rgba(139, 92, 246, 0.2);
    --shadow-secondary: 0 5px 15px rgba(0, 0, 0, 0.4);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --blur-bg: rgba(10, 10, 15, 0.85);

    /* Fluid Typography */
    --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.825rem);
    --fs-sm: clamp(0.825rem, 0.75rem + 0.375vw, 0.95rem);
    --fs-base: clamp(0.95rem, 0.875rem + 0.375vw, 1.05rem);
    --fs-lg: clamp(1.05rem, 0.95rem + 0.5vw, 1.2rem);
    --fs-xl: clamp(1.2rem, 1.05rem + 0.75vw, 1.45rem);
    --fs-2xl: clamp(1.45rem, 1.25rem + 1vw, 1.9rem);
    --fs-3xl: clamp(1.9rem, 1.6rem + 1.5vw, 2.8rem);
    --fs-4xl: clamp(2.4rem, 1.9rem + 2.5vw, 3.8rem);

    /* Fluid Spacing */
    --space-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
    --space-sm: clamp(0.5rem, 0.4rem + 0.5vw, 0.875rem);
    --space-md: clamp(0.875rem, 0.7rem + 0.875vw, 1.75rem);
    --space-lg: clamp(1.25rem, 1rem + 1.25vw, 2.5rem);
    --space-xl: clamp(1.75rem, 1.3rem + 2.25vw, 3.5rem);
    --space-2xl: clamp(2.5rem, 1.75rem + 3.75vw, 5.5rem);

    --container-7xl: 80rem;
    --container-4xl: 56rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: var(--fs-base);
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* ======================================
   MATRIX RAIN BACKGROUND (CSS-driven)
   ====================================== */
.matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.18;
}

/* Radial glow overlays (no extra DOM) */
.container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 15% 85%, rgba(0,255,65,0.04) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 15%, rgba(139,92,246,0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 50%, rgba(59,130,246,0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Spider Web Overlay */
.spider-web {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.04;
}

.web-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, var(--text-muted), transparent);
    height: 1px;
    animation: web-shimmer 10s ease-in-out infinite;
}

.web-line.vertical {
    width: 1px;
    height: 100%;
    background: linear-gradient(0deg, transparent, var(--text-muted), transparent);
}

@keyframes web-shimmer {
    0%, 100% { opacity: 0.03; }
    50% { opacity: 0.12; }
}

/* ======================================
   HEADER
   ====================================== */
.header {
    background: var(--blur-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0,255,65,0.04);
}

.header-content {
    max-width: var(--container-7xl);
    margin: 0 auto;
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.logo h1 {
    font-size: var(--fs-2xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.1rem;
    letter-spacing: -0.02em;
}

.logo p {
    font-size: var(--fs-xs);
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.04em;
}

.nav {
    display: flex;
    gap: 0.2rem;
    background: rgba(15, 25, 35, 0.9);
    padding: 0.2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.45rem 0.7rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: var(--fs-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
    text-decoration: none;
    letter-spacing: 0.02em;
}

.nav-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

.nav-btn.active {
    color: white;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-primary);
}

.nav-btn i {
    font-size: 0.85rem;
}

/* ======================================
   BREADCRUMB
   ====================================== */
.breadcrumb {
    max-width: var(--container-7xl);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-xs);
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--primary-purple);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

/* ======================================
   MAIN CONTENT
   ====================================== */
.main {
    flex: 1;
    max-width: var(--container-7xl);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    width: 100%;
    position: relative;
    z-index: 1;
}

/* ======================================
   PAGE HEADERS (Hero)
   ====================================== */
.page-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl) 0;
}

.page-header h1 {
    font-size: var(--fs-4xl);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.page-header p {
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.65;
}

/* ======================================
   POST / PROJECT GRID
   ====================================== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.post-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: var(--space-lg);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.35), 0 0 0 1px rgba(139,92,246,0.25);
    border-color: rgba(139,92,246,0.4);
}

.post-card:hover::before {
    transform: scaleX(1);
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

.post-category {
    background: var(--gradient-primary);
    color: white;
    padding: 0.2rem 0.65rem;
    border-radius: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.68rem;
}

.post-card h3 {
    font-size: var(--fs-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    line-height: 1.3;
}

.post-card p {
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: var(--space-md);
    font-size: var(--fs-sm);
}

.read-more {
    color: var(--primary-purple);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: all 0.2s ease;
    font-size: var(--fs-sm);
}

.read-more:hover {
    color: var(--accent-purple);
    transform: translateX(4px);
}

/* ======================================
   ARTICLE CONTENT
   ====================================== */
.article-content {
    max-width: 90%;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: var(--space-2xl);
    box-shadow: var(--shadow-card);
    position: relative;
}

.article-content::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1rem 1rem 0 0;
}

@media (min-width: 1200px) {
    .article-content { max-width: 88%; }
}

@media (min-width: 1400px) {
    .article-content { max-width: 84%; }
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    color: var(--text-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.article-content h1 {
    font-size: var(--fs-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0;
    line-height: 1.15;
}

.article-content h2 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--space-sm);
    color: var(--text-primary);
}

.article-content h3 {
    font-size: var(--fs-xl);
    font-weight: 600;
    color: var(--accent-blue);
}

.article-content p {
    margin-bottom: var(--space-md);
    line-height: 1.75;
    color: var(--text-secondary);
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow-secondary);
    border: 1px solid var(--border-color);
}

.article-content pre {
    background: #050c0f;
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-green);
    border-radius: 0.5rem;
    padding: var(--space-lg);
    overflow-x: auto;
    margin: var(--space-lg) 0;
    font-family: 'Cascadia Code', 'Courier New', Courier, monospace;
    font-size: 0.88em;
    line-height: 1.6;
    -webkit-overflow-scrolling: touch;
}

.article-content code {
    background: rgba(0,255,65,0.06);
    border: 1px solid rgba(0,255,65,0.15);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Cascadia Code', 'Courier New', monospace;
    font-size: 0.87em;
    color: var(--accent-green);
}

.article-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: #b0ffb8;
}

.article-content blockquote {
    border-left: 3px solid var(--primary-purple);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    font-style: italic;
    color: var(--text-secondary);
    background: rgba(139,92,246,0.05);
    border-radius: 0 0.5rem 0.5rem 0;
}

.article-content ul,
.article-content ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.article-content li {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    line-height: 1.65;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    font-size: var(--fs-sm);
    border-radius: 0.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.article-content th {
    background: var(--hover-bg);
    padding: 0.6rem 0.9rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-content td {
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    vertical-align: top;
}

.article-content tr:nth-child(even) td {
    background: rgba(255,255,255,0.02);
}

/* ======================================
   BACK BUTTON
   ====================================== */
.back-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: var(--fs-sm);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
    text-decoration: none;
}

.back-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    transform: translateX(-4px);
    border-color: rgba(139,92,246,0.3);
}

/* ======================================
   FOOTER
   ====================================== */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) var(--space-lg);
    margin-top: auto;
    position: relative;
    z-index: 1;
}

.footer-content {
    max-width: var(--container-7xl);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-content p {
    color: var(--text-muted);
    font-size: var(--fs-xs);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    color: var(--text-muted);
    font-size: var(--fs-lg);
    transition: all 0.2s ease;
    padding: var(--space-sm);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.social-link:hover {
    color: var(--primary-purple);
    background: var(--hover-bg);
    transform: translateY(-2px);
}

/* ======================================
   SKILL TAGS
   ====================================== */
.skill-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.4rem 0.9rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: var(--fs-xs);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-tag:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

/* ======================================
   EXPERTISE CARDS
   ====================================== */
.expertise-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: var(--space-lg);
    text-align: center;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.expertise-card:hover {
    transform: translateY(-3px);
    border-color: rgba(139,92,246,0.4);
}

/* ======================================
   HERO / ABOUT SECTION
   ====================================== */
.hero {
    position: relative;
}

.about-preview {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: var(--space-2xl);
    margin: var(--space-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-preview::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--matrix-green), var(--primary-purple), var(--primary-blue));
}

/* ======================================
   AVATAR PLACEHOLDER
   ====================================== */
.avatar-placeholder {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 2rem;
    font-weight: 800;
    color: white;
    box-shadow: var(--shadow-primary), 0 0 0 3px rgba(139,92,246,0.2);
}

/* ======================================
   CTA SECTION
   ====================================== */
.cta-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: var(--space-2xl);
    margin: var(--space-2xl) 0;
    text-align: center;
    position: relative;
}

/* ======================================
   EMPTY STATE
   ====================================== */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

/* ======================================
   MOBILE RESPONSIVE — improved
   ====================================== */
@media (max-width: 768px) {
    .header-content {
        padding: var(--space-xs) var(--space-md);
        gap: var(--space-sm);
    }

    .logo h1 { font-size: var(--fs-xl); }
    .logo p { font-size: 0.65rem; }

    .nav {
        width: auto;
        flex-wrap: wrap;
        gap: 0.15rem;
        padding: 0.15rem;
    }

    .nav-btn {
        padding: 0.4rem 0.55rem;
        font-size: 0.7rem;
        gap: 0.15rem;
    }

    .nav-btn i { font-size: 0.75rem; }

    .posts-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .article-content {
        max-width: 100%;
        padding: var(--space-lg) var(--space-md);
        border-radius: 0.75rem;
    }

    .article-content pre {
        font-size: 0.78rem;
        padding: var(--space-md);
        overflow-x: auto;
        white-space: pre;
        -webkit-overflow-scrolling: touch;
    }

    .article-content table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .image-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    .page-header { padding: var(--space-lg) 0; }
    .page-header h1 { font-size: var(--fs-3xl); }

    .about-preview, .cta-section {
        padding: var(--space-lg);
        margin: var(--space-lg) 0;
    }

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

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        gap: var(--space-xs);
        padding: var(--space-xs) var(--space-sm);
        align-items: stretch;
    }

    .logo { text-align: center; }
    .logo h1 { font-size: var(--fs-lg); }

    .nav {
        width: 100%;
        justify-content: center;
    }

    .nav-btn {
        flex: 1;
        min-width: 0;
        justify-content: center;
        padding: 0.45rem 0.4rem;
        font-size: 0.68rem;
    }

    .nav-btn span { display: none; }
    .nav-btn i { font-size: 0.85rem; }

    .main {
        padding: var(--space-lg) var(--space-sm);
    }

    .breadcrumb {
        padding: var(--space-sm) var(--space-sm) 0;
        font-size: 0.7rem;
    }

    .article-content {
        padding: var(--space-md) var(--space-sm);
        border-radius: 0.5rem;
    }

    .article-content pre {
        font-size: 0.72rem;
        padding: var(--space-sm);
    }

    .article-content code {
        font-size: 0.78em;
    }

    .article-content th,
    .article-content td {
        padding: 0.4rem 0.5rem;
        font-size: 0.75rem;
    }

    .post-card {
        padding: var(--space-md);
    }

    .footer {
        padding: var(--space-md) var(--space-sm);
    }
}

@media (max-width: 360px) {
    .nav-btn {
        padding: 0.38rem 0.35rem;
        font-size: 0.65rem;
    }
}