* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background-color: #000;
    color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}
.navbar {
    background-color: #111;
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #333;
}
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: #fff;
}
.nav-link {
    color: #fff;
    margin: 0 10px;
    font-weight: 500;
}
.nav-link:hover {
    color: #6ea8fe;
}
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}
.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.hero p {
    font-size: 1.5rem;
    max-width: 600px;
}
section {
    padding: 80px 20px;
    max-width: 900px;
    margin: 0 auto;
}
.section-title {
    font-size: 2.5rem;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 2px solid #333;
}
.about-content {
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
}
.education-item {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #111;
    border-radius: 5px;
}
.skill-category {
    margin-bottom: 25px;
}
.skill-badge {
    display: inline-block;
    background-color: #333;
    color: #fff;
    padding: 8px 15px;
    margin: 5px;
    border-radius: 4px;
}
.certification-item {
    background-color: #111;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}
.certification-item h4 {
    color: #6ea8fe;
}
.certification-item .date {
    color: #aaa;
    font-style: italic;
}
.btn-certificate {
    margin-top: 10px;
    border: 1px solid #6ea8fe;
    color: #6ea8fe;
}
.btn-certificate:hover {
    background-color: #6ea8fe;
    color: #000;
}
.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}
.contact-icon {
    font-size: 1.5rem;
    margin-right: 15px;
    color: #6ea8fe;
}
footer {
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid #333;
    margin-top: 50px;
}
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    .hero p {
        font-size: 1.2rem;
    }
    .section-title {
        font-size: 2rem;
    }
}