:root {
    --primary-color: #00e5ff; 
    --primary-hover: #00bfff;
    --bg-color: #121212; 
    --bg-light: #1a1a1a; 
    --card-bg: #1e1e1e; 
    --text-main: #f5f5f5; 
    --text-muted: #b3b3b3; 
    --border-color: #333333; 
}

html {
    scroll-behavior: smooth; 
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, sans-serif;
}

body {
    line-height: 1.7;
    color: var(--text-main);
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--text-main);
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section, .hero-content {
    animation: fadeUp 1s ease-out forwards;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background-color: rgba(18, 18, 18, 0.85); 
    backdrop-filter: blur(12px); 
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

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

#hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    font-weight: 400;
    letter-spacing: -1px;
}

.hero-content h2 {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-content p {
    max-width: 500px;
    margin: 0 auto 3rem;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: transparent;
    color: var(--primary-color);
    border-radius: 3px; 
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 5px rgba(0, 229, 255, 0.1); 
    transition: all 0.3s ease; 
}

.btn:hover {
    background-color: var(--primary-color);
    color: var(--bg-color); 
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.5); 
    transform: translateY(-2px);
}

.btn-outline {
    border-color: var(--border-color);
    color: var(--text-main);
    box-shadow: none;
}

.btn-outline:hover {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

.contact-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.section {
    padding: 8rem 10%;
}

.bg-light {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    text-align: left;
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 4rem;
    color: var(--text-main);
    letter-spacing: 2px;
    text-transform: uppercase;
    border-left: 3px solid var(--primary-color);
    padding-left: 15px;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.about-text strong {
    color: var(--text-main);
    font-weight: 500;
}

.contact-info h3 {
    margin-bottom: 1.5rem;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--text-main);
}

.contact-info ul {
    list-style: none;
}

.contact-info li {
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.contact-info strong {
    color: var(--text-main);
    font-weight: 500;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    font-weight: 500;
    color: var(--text-main);
    font-size: 1.1rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tags span {
    background-color: rgba(0, 229, 255, 0.05);
    color: var(--primary-color);
    padding: 0.4rem 1rem;
    border-radius: 3px;
    font-size: 0.85rem;
    border: 1px solid rgba(0, 229, 255, 0.2);
    transition: all 0.3s ease;
}

.tags span:hover {
    background-color: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    padding: 3rem 2rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease; 
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color); 
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5), 0 0 10px rgba(0, 229, 255, 0.1);
}

.card h3 {
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--text-main);
    font-size: 1.2rem;
}

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

.highlight-card {
    border: 1px solid rgba(0, 229, 255, 0.4);
}

.table-container {
    overflow-x: auto;
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    background-color: transparent;
}

.styled-table thead tr {
    border-bottom: 1px solid var(--primary-color);
    text-align: left;
}

.styled-table th {
    color: var(--text-main);
    font-weight: 500;
    padding: 1.5rem 0;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.styled-table td {
    padding: 1.5rem 0;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.styled-table tbody tr:hover td {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.02);
}

.interests-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.interest-block h3 {
    margin-bottom: 1.5rem;
    font-weight: 500;
    color: var(--text-main);
    font-size: 1.1rem;
}

.interest-block ul {
    list-style: none;
}

.interest-block li {
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.interest-block strong {
    color: var(--text-main);
    font-weight: 500;
}

footer {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

footer a {
    color: var(--primary-color);
    font-weight: 500;
    border-bottom: 1px solid var(--primary-color);
}

footer a:hover {
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .about-grid, .interests-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .section {
        padding: 5rem 5%;
    }
    .styled-table th, .styled-table td {
        padding: 1rem;
    }
}