:root {
    --color-bg: #ffffff;
    --color-text: #333;
    --color-heading: #1a1a1a;
    --color-muted: #666;
    --color-body: #555;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-tag-bg: #f3f4f6;
    --color-tag-text: #666;
    --color-border: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #121212;
        --color-text: #e0e0e0;
        --color-heading: #f0f0f0;
        --color-muted: #a0a0a0;
        --color-body: #b0b0b0;
        --color-accent: #60a5fa;
        --color-accent-hover: #93bbfd;
        --color-tag-bg: #252525;
        --color-tag-text: #a0a0a0;
        --color-border: #333;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

nav {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

nav a {
    color: var(--color-muted);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

nav a.active {
    color: var(--color-heading);
    font-weight: 600;
}

header {
    margin-bottom: 60px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-heading);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--color-muted);
    margin-bottom: 20px;
}

.cta-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cta-links a {
    display: inline-block;
    padding: 8px 20px;
    border: 2px solid var(--color-accent);
    border-radius: 6px;
    color: var(--color-accent);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.cta-links a:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    text-decoration: none;
}

section {
    margin-bottom: 50px;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-heading);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 10px;
}

.project, .article {
    margin-bottom: 25px;
}

.project h3, .article h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-accent);
}

.project p, .article p {
    color: var(--color-body);
    margin-bottom: 8px;
}

.links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-tag-bg);
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--color-tag-text);
    margin-right: 8px;
    margin-bottom: 8px;
}

.page-intro {
    color: var(--color-body);
    margin-bottom: 30px;
    font-size: 1.05rem;
    line-height: 1.7;
}

footer {
    margin-top: 80px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.9rem;
}

.contact-links {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.article-body p {
    color: var(--color-body);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.article-body h2 {
    margin-top: 40px;
}

.article-body ul {
    color: var(--color-body);
    margin-left: 20px;
    margin-bottom: 16px;
    line-height: 1.8;
    font-size: 1.05rem;
}

.article-body li {
    margin-bottom: 6px;
}

/* Resume styles */
.resume-section ul {
    color: var(--color-body);
    margin-left: 20px;
    margin-bottom: 16px;
    line-height: 1.8;
}

.resume-section li {
    margin-bottom: 4px;
}

.experience-entry {
    margin-bottom: 30px;
}

.experience-entry h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: 2px;
}

.experience-entry .role-meta {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.experience-entry .role-note {
    color: var(--color-muted);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 10px;
}

.competency-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 0.92rem;
}

.competency-table th,
.competency-table td {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    text-align: left;
    vertical-align: top;
}

.competency-table th {
    background: var(--color-tag-bg);
    color: var(--color-heading);
    font-weight: 600;
}

.competency-table td {
    color: var(--color-body);
}

.summary-text {
    color: var(--color-body);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.availability-text {
    color: var(--color-body);
    font-size: 1.05rem;
    line-height: 1.7;
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    nav {
        gap: 16px;
    }

    .competency-table {
        font-size: 0.82rem;
    }

    .competency-table th,
    .competency-table td {
        padding: 6px 8px;
    }
}