:root {
    /* Light Theme (Default) */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --bg-dark: #ffffff;
    --bg-darker: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --code-bg: #1e293b;
}

[data-theme="dark"] {
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --code-bg: #020617;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-dark);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: background 0.3s, border-color 0.3s;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    transition: all 0.3s;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.theme-toggle .fa-sun { display: none; }
.theme-toggle .fa-moon { display: block; }

[data-theme="dark"] .theme-toggle .fa-sun { display: block; }
[data-theme="dark"] .theme-toggle .fa-moon { display: none; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
}

.hero-content { flex: 1; }

.hero-greeting {
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.hero-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.hero-description {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 500px;
    margin-bottom: 2rem;
}

.hero-cta { display: flex; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }

.btn {
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--gradient);
    color: white;
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3); }

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--bg-card); border-color: var(--primary); }

.hero-socials { display: flex; gap: 1rem; }

.hero-socials a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all 0.3s;
}

.hero-socials a:hover { background: var(--primary); color: white; transform: translateY(-3px); border-color: var(--primary); }

.hero-visual { flex: 1; display: flex; justify-content: center; }

.code-block {
    background: var(--code-bg);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow);
}

.code-header {
    padding: 0.75rem 1rem;
    background: #334155;
    display: flex;
    gap: 0.5rem;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.code-block pre {
    padding: 1.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-block code { color: #94a3b8; }
.code-block .keyword { color: #c792ea; }
.code-block .class { color: #82aaff; }
.code-block .string { color: #c3e88d; }
.code-block .method { color: #82aaff; }
.code-block .comment { color: #64748b; font-style: italic; }

/* Sections */
.section { padding: 5rem 0; }
.section-alt { background: var(--bg-darker); }

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

/* About */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p { color: var(--text-secondary); margin-bottom: 1rem; font-size: 1.05rem; }
.about-text strong { color: var(--primary); }

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label { color: var(--text-muted); font-size: 0.9rem; }

/* Timeline */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 0.5rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-dark);
}

.timeline-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.5rem; }
.timeline-company { font-size: 1.3rem; font-weight: 600; color: var(--text-primary); }
.timeline-type { font-size: 0.8rem; color: var(--secondary); background: rgba(16, 185, 129, 0.1); padding: 0.25rem 0.75rem; border-radius: 20px; }
.timeline-role { font-size: 1rem; color: var(--primary); margin-bottom: 0.25rem; }
.timeline-date { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.75rem; }
.timeline-stack { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.75rem; font-style: italic; }
.timeline-highlights { list-style: none; }
.timeline-highlights li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    padding-left: 1.25rem;
    position: relative;
}
.timeline-highlights li::before { content: '▹'; position: absolute; left: 0; color: var(--primary); }

/* OSS Grid */
.oss-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 1.5rem; }

.oss-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.oss-card:hover { border-color: var(--primary); transform: translateY(-5px); }

.oss-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.oss-icon { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.oss-icon.spring { background: linear-gradient(135deg, #6db33f, #5fa134); }
.oss-icon.testcontainers { background: linear-gradient(135deg, #00b8d4, #0097a7); }
.oss-icon.kafka { background: linear-gradient(135deg, #231f20, #444); color: white; }
.oss-name { font-size: 1.2rem; font-weight: 600; }
.oss-desc { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }

.oss-prs { display: flex; flex-direction: column; gap: 0.5rem; }
.oss-pr {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background: var(--bg-darker);
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s;
    border: 1px solid var(--border);
}
.oss-pr:hover { background: var(--bg-card-hover); }
.oss-pr-icon { color: var(--secondary); }
.oss-pr-title { color: var(--text-secondary); font-size: 0.85rem; flex: 1; }
.oss-pr-number { color: var(--text-muted); font-size: 0.8rem; }

/* Skills */
.skills-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

.skill-category h3 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.skill-tag {
    background: var(--bg-card);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.skill-tag:hover { border-color: var(--primary); color: var(--text-primary); }

/* Education */
.education-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
}

.education-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
}

.education-content h3 { font-size: 1.25rem; margin-bottom: 0.25rem; }
.education-school { color: var(--text-secondary); margin-bottom: 0.5rem; }
.education-details { display: flex; gap: 1.5rem; color: var(--text-muted); font-size: 0.9rem; }
.education-gpa { color: var(--secondary); }

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.contact-card:hover { border-color: var(--primary); transform: translateY(-5px); color: var(--text-primary); }
.contact-card i { font-size: 1.5rem; color: var(--primary); }

/* Footer */
.footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-dark); flex-direction: column; padding: 1rem; gap: 1rem; border-bottom: 1px solid var(--border); }
    .nav-menu.active { display: flex; }
    .nav-toggle { display: flex; }
    .hero { flex-direction: column; text-align: center; padding-top: 8rem; }
    .hero-description { margin: 0 auto 2rem; }
    .hero-cta { justify-content: center; }
    .hero-socials { justify-content: center; }
    .hero-visual { order: -1; }
    .about-content { grid-template-columns: 1fr; }
    .about-stats { flex-direction: row; flex-wrap: wrap; justify-content: center; }
    .stat { flex: 1; min-width: 120px; }
    .education-card { flex-direction: column; text-align: center; }
    .education-details { flex-direction: column; gap: 0.5rem; }
    .oss-grid { grid-template-columns: 1fr; }
}

/* Nav Actions for Mobile */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mobile-theme {
    display: none;
}

@media (max-width: 768px) {
    .mobile-theme {
        display: flex;
    }
    
    .nav-menu .theme-toggle {
        display: none;
    }
}

/* Blog Styles */
.blog-hero {
    padding: 8rem 0 3rem;
    text-align: center;
    background: var(--bg-darker);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.blog-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.blog-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.blog-date i {
    margin-right: 0.5rem;
}

.blog-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.blog-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.blog-tag {
    background: var(--bg-darker);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

.nav-menu a.active {
    color: var(--primary);
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* Blog Post Page */
.blog-post {
    padding: 8rem 0 4rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    transition: gap 0.3s;
}

.back-link:hover {
    gap: 0.75rem;
}

.post-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.post-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.post-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.post-meta i {
    margin-right: 0.5rem;
}

.post-content {
    max-width: 800px;
}

.post-content h2 {
    font-size: 1.75rem;
    margin: 2.5rem 0 1rem;
    color: var(--text-primary);
}

.post-content h3 {
    font-size: 1.35rem;
    margin: 2rem 0 0.75rem;
    color: var(--text-primary);
}

.post-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.post-content ul, .post-content ol {
    color: var(--text-secondary);
    margin: 1rem 0 1.5rem 1.5rem;
    line-height: 1.8;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content pre {
    background: var(--code-bg);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

.post-content code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    color: #e2e8f0;
}

.post-content p code {
    background: var(--bg-card);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    color: var(--primary);
    font-size: 0.9em;
}

.post-content a {
    color: var(--primary);
    text-decoration: none;
}

.post-content a:hover {
    text-decoration: underline;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

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

.post-content th {
    background: var(--bg-card);
    font-weight: 600;
}

.post-content td {
    color: var(--text-secondary);
}

.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 500;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    transition: gap 0.3s;
}

.read-more:hover {
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .post-header h1 {
        font-size: 1.75rem;
    }
    .post-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Improved Blog Post Spacing & Tables */
.post-content h2:first-of-type {
    margin-top: 0;
}

.post-content ul, .post-content ol {
    padding-left: 1.5rem;
    margin: 1.25rem 0 1.75rem;
}

.post-content li {
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    border: 2px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.post-content th {
    background: var(--bg-card);
    font-weight: 600;
    color: var(--text-primary);
    padding: 1rem 1.25rem;
    text-align: left;
    border: 1px solid var(--border);
    border-bottom: 2px solid var(--primary);
}

.post-content td {
    padding: 1rem 1.25rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    background: var(--bg-dark);
}

.post-content tr:hover td {
    background: var(--bg-card);
}

.post-content pre {
    margin: 2rem 0;
    padding: 1.5rem;
}

.post-content p + ul,
.post-content p + ol {
    margin-top: 0.5rem;
}

.post-content h3 + p {
    margin-top: 0.5rem;
}

.post-header {
    margin-bottom: 2.5rem;
}

/* Blog card spacing */
.blog-card-content {
    padding: 2rem;
}

.blog-excerpt {
    margin-bottom: 1.25rem;
}

.blog-tags {
    margin-bottom: 1rem;
}

/* Smaller stat boxes */
.stat {
    padding: 1rem 1.25rem;
}

.stat-number {
    font-size: 1.75rem;
}

.stat-label {
    font-size: 0.8rem;
}