:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent: #00ff88;
    --accent-dim: #00cc6a;
    --border: #30363d;
}

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

html {
    scroll-behavior: smooth;
}

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

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

a:hover {
    color: var(--accent-dim);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 0;
}

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

nav .logo {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav ul a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

nav ul a:hover {
    color: var(--accent);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 4rem;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-content h1 .accent {
    color: var(--accent);
}

.hero-content .tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-content .intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
}

.hero-content .cta {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.hero-content .cta:hover {
    background-color: var(--accent-dim);
    color: var(--bg-primary);
}

.hero-content .cta.secondary {
    background-color: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    margin-left: 1rem;
}

.hero-content .cta.secondary:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
}

/* Sections */
section {
    padding: 5rem 0;
}

section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

section h2::before {
    content: '> ';
    color: var(--accent);
}

/* About Section */
.about p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
}

.skill-category h3 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    color: var(--text-secondary);
    padding: 0.3rem 0;
    font-size: 0.95rem;
}

.skill-category li::before {
    content: '- ';
    color: var(--accent);
}

.certification {
    margin-top: 2rem;
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    display: inline-block;
}

.certification span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.certification strong {
    color: var(--text-primary);
}

/* Projects Section */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.project {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    transition: border-color 0.2s ease;
}

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

.project h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.project .status {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project .status.complete {
    background-color: rgba(0, 255, 136, 0.1);
    color: var(--accent);
}

.project .status.in-progress {
    background-color: rgba(255, 193, 7, 0.1);
    color: #ffc107;
}

.project .status.archived {
    background-color: rgba(139, 148, 158, 0.1);
    color: #8b949e;
}

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

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

.project .tech-stack span {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    color: var(--text-secondary);
}

.project .link {
    display: inline-block;
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    max-width: 500px;
}

.contact-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
}

.contact-item .label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    min-width: 60px;
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }

    nav ul a {
        font-size: 0.8rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content .tagline {
        font-size: 1.2rem;
    }

    section {
        padding: 3rem 0;
    }

    section h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }
}