/* Variables */
:root {
    --bg-color: #0d1117;       /* GitHub Dark Dimmed */
    --card-bg: #161b22;        /* Lighter card background */
    --text-main: #c9d1d9;      /* Off-white text */
    --text-muted: #8b949e;     /* Grey text */
    --accent: #238636;         /* GitHub Green */
    --accent-hover: #2ea043;   
    --border: #30363d;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    scroll-behavior: smooth;
}

a { text-decoration: none; color: inherit; transition: 0.2s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Utilities */
.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title { font-size: 2rem; margin-bottom: 40px; text-align: center; color: #fff; }
.highlight { color: #58a6ff; /* Soft Blue highlight */ }

/* Navbar */
.navbar {
    padding: 20px 0;
    position: sticky;
    top: 0;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(5px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: bold; font-size: 1.2rem; font-family: var(--font-mono); }
.nav-links { display: flex; gap: 20px; }
.nav-links a:hover { color: var(--accent); }

/* Hero */
.hero {
    text-align: center;
    padding: 100px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid var(--border);
    margin-bottom: 20px;
}
.hero h1 { font-size: 3rem; margin-bottom: 10px; }
.tagline { font-size: 1.2rem; color: var(--text-muted); font-family: var(--font-mono); margin-bottom: 30px; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid transparent;
}
.btn.primary { background-color: var(--accent); color: white; }
.btn.primary:hover { background-color: var(--accent-hover); }
.btn.secondary { background-color: transparent; border-color: var(--border); color: var(--text-main); margin-left: 10px; }
.btn.secondary:hover { border-color: var(--text-muted); background-color: var(--card-bg); }

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    transition: transform 0.2s, border-color 0.2s;
}
.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--text-muted);
}
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.card-header h3 { font-size: 1.2rem; }
.badge {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 12px;
    background: #30363d;
    color: var(--text-muted);
    font-family: var(--font-mono);
}
.card-links a { color: #58a6ff; font-size: 0.9rem; margin-top: 15px; display: inline-block; }
.card-links a:hover { text-decoration: underline; }

/* Skills */
.skills-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}
.skills-list li {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 1rem;
}

/* Contact & Footer */
.contact-wrapper { text-align: center; }
footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}
footer a { color: #58a6ff; }

/* Responsive */
@media (max-width: 600px) {
    .hero h1 { font-size: 2rem; }
    .nav-links { display: none; } /* Simplified for mobile */
    .btn { display: block; margin: 10px auto; width: 100%; max-width: 300px; }
    .btn.secondary { margin-left: auto; }
}

/* Simple Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}
@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}