:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --border-color: #30363d;
    --accent-color: #58a6ff;
    --accent-green: #3fb950;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    --heading-color: #f0f6fc;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-stack);
    line-height: 1.6;
    padding: 2rem 1rem;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

/* Hero Section */
header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2.5rem;
    margin-bottom: 2.5rem;
}

.badge {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-green);
    background: rgba(63, 185, 80, 0.1);
    border: 1px solid rgba(63, 185, 80, 0.3);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 1rem;
}

h1 {
    color: var(--heading-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.bio-text {
    font-size: 1.05rem;
    max-width: 750px;
}

/* Sections */
section {
    margin-bottom: 3rem;
}

h2 {
    color: var(--heading-color);
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

h2::before {
    content: "//";
    color: var(--accent-color);
    font-family: var(--font-mono);
}

/* Grid Layout for Principles */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.card h3 {
    color: var(--heading-color);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Tech Stack Pills */
.stack-group {
    margin-bottom: 1rem;
}

.stack-title {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

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

.pill {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--heading-color);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
}

/* Contact Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.social-links a {
    color: var(--accent-color);
    text-decoration: none;
    margin-right: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.social-links a:hover {
    text-decoration: underline;
}

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

    footer {
        flex-direction: column;
        align-items: flex-start;
    }
}