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

body {
    font-family: "Inter", system-ui, sans-serif;
    background: #0d1117;
    color: #c9d1d9;
    line-height: 1.6;
}

/* Header */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: #161b22;
    border-bottom: 1px solid #30363d;
    position: sticky;
    top: 0;
    z-index: 10;
}

.logo {
    font-family: "JetBrains Mono", monospace;
    font-size: 1.4rem;
    color: #58a6ff;
}

.nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: #c9d1d9;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav a:hover {
    color: #58a6ff;
}

/* Hero */
.hero {
    text-align: center;
    padding: 5rem 2rem;
    background: radial-gradient(circle at top, #1f2937, #0d1117);
}

.hero h2 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    color: #58a6ff;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.8;
}

/* Sections */
.content-section {
    padding: 3rem 2rem;
    max-width: 1100px;
    margin: auto;
}

.content-section h2 {
    font-family: "JetBrains Mono", monospace;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #58a6ff;
}

/* Cards */
.card-list {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background: #161b22;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #30363d;
    box-shadow: 0 0 12px rgba(88, 166, 255, 0.1);
}

.card h3 {
    margin-bottom: 0.5rem;
    color: #79c0ff;
}

.tag {
    font-style: italic;
}

.button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.6rem 1.2rem;
    background: #58a6ff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: background 0.2s ease;
}

.button:hover {
    background: #8b949e;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 2rem;
    color: #8b949e;
    border-top: 1px solid #30363d;
}