/* Minimalist Developer Portfolio
   Content-first design with monochromatic palette + single accent */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Monochromatic palette */
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;
    --black: #09090b;

    /* Single accent color */
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #dbeafe;

    /* Semantic */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-400);
    --border: var(--gray-200);
}

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

html {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Layout */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-wide {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
    transition: color 0.2s;
}

.nav-logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
}

.hero-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 2rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

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

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

/* Section */
.section {
    padding: 4rem 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.section-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.skill-category h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

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

.skill-tag {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: var(--white);
    border: 1px solid var(--border);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
}

/* Experience */
.experience-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
}

.experience-item:last-child {
    border-bottom: none;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.experience-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.experience-company {
    color: var(--accent);
}

.experience-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.experience-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.experience-bullets {
    list-style: none;
    padding-left: 0;
}

.experience-bullets li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.experience-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.project-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.2s;
}

.project-card:hover {
    border-color: var(--gray-300);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

.project-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.project-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.project-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--gray-100);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

/* Blog/Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.post-card {
    display: block;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
}

.post-card:hover .post-title {
    color: var(--accent);
}

.post-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.post-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

.post-excerpt {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

@media (min-width: 640px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--text-muted);
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-link svg {
    width: 20px;
    height: 20px;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Prose (Article Content) */
.prose {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.prose h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.prose h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.prose p {
    margin-bottom: 1.5rem;
}

.prose a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.prose a:hover {
    color: var(--accent-hover);
}

.prose code {
    font-family: 'SF Mono', Menlo, Monaco, monospace;
    font-size: 0.875em;
    background: var(--gray-100);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

.prose pre {
    background: var(--gray-900);
    color: var(--gray-100);
    padding: 1.25rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.875rem;
}

.prose pre code {
    background: none;
    padding: 0;
}

/* Splash Syntax Highlighting */
.prose pre code .keyword { color: #fc5fa3; }
.prose pre code .type { color: #5dd8ff; }
.prose pre code .call { color: #67b7a4; }
.prose pre code .property { color: #67b7a4; }
.prose pre code .number { color: #d0bf69; }
.prose pre code .string { color: #fc6a5d; }
.prose pre code .comment { color: #6c7986; }
.prose pre code .dotAccess { color: #67b7a4; }
.prose pre code .preprocessing { color: #fd8f3f; }

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

.prose li {
    margin-bottom: 0.5rem;
}

.prose blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.prose img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1.5rem 0;
}

/* Article Header */
.article-header {
    padding: 6rem 0 2rem;
}

.article-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

.article-tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

/* About Page */
.about-hero {
    padding: 8rem 0 3rem;
    background: var(--bg-secondary);
}

.about-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .about-hero-content {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
        gap: 3rem;
    }
}

.about-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.about-intro {
    flex: 1;
}

.about-tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 500px;
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

@media (min-width: 768px) {
    .about-stats {
        justify-content: flex-start;
    }
}

.about-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

@media (min-width: 768px) {
    .about-stat {
        align-items: flex-start;
    }
}

.about-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
}

.about-stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.about-content {
    max-width: 680px;
    margin: 0 auto;
}

.about-content h2 {
    margin-top: 3rem;
}

.about-content h2:first-child {
    margin-top: 0;
}

/* Highlights Grid */
.highlights-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .highlights-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.highlight-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.highlight-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.highlight-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.highlight-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact-cta {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border-radius: 16px;
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.contact-text {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.contact-email {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--accent);
}

.contact-email:hover {
    text-decoration: underline;
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-8 { margin-top: 2rem; }
.text-sm { font-size: 0.875rem; }
.text-muted { color: var(--text-muted); }
.font-medium { font-weight: 500; }

/* Selection */
::selection {
    background: var(--accent-light);
    color: var(--accent-hover);
}

/* Focus */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}