/* ------------- DESIGN TOKENS ------------- */
:root {
    --bg-color: #0d1117;
    --surface-color: #161b22;
    --border-color: #30363d;
    
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-color: #58a6ff;
    --accent-hover: #79c0ff;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* ------------- RESET & BASE ------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-color);
}

body {
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 4rem 0;
}

section {
    padding: 2rem 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

.section-title::before {
    content: "## ";
    color: var(--border-color);
}

/* ------------- NAVIGATION ------------- */
.site-nav {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo:hover {
    text-decoration: none;
    color: var(--text-primary);
}

.logo::before {
    content: "~/ ";
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.nav-link:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.highlight-link {
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    color: var(--text-primary);
}

.highlight-link:hover {
    border-color: var(--text-secondary);
    text-decoration: none;
}

/* ------------- BUTTONS ------------- */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: var(--font-sans);
}

.btn-primary {
    background-color: var(--surface-color);
    color: var(--accent-color);
    border: 1px solid var(--border-color);
}

.btn-primary:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
}

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

.btn-secondary:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* ------------- HERO SECTION ------------- */
.hero {
    padding: 6rem 0 2rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.prompt {
    color: var(--accent-color);
    font-family: var(--font-mono);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    margin-bottom: 1.5rem;
}

.hero-text {
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 600px;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* ------------- ABOUT SECTION ------------- */
.about-content {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.about-text {
    margin-bottom: 1rem;
}

.about-text:last-child {
    margin-bottom: 0;
}

/* ------------- PROJECTS SECTION ------------- */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.project-item {
    display: flex;
    flex-direction: column;
}

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

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.project-title a {
    color: var(--text-primary);
}

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

.project-role {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

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

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

.tech-tag {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    padding: 0.2rem 0.6rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
}

/* ------------- FOOTER ------------- */
footer {
    padding: 3rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

.social-links a {
    color: var(--text-secondary);
}

.social-links a:hover {
    color: var(--text-primary);
}

/* ------------- RESPONSIVE ------------- */
@media (max-width: 600px) {
    .nav-links {
        display: none; /* simple fallback for mobile without js */
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.2rem;
    }
}