body{
    font-family: Arial, Helvetica, sans-serif;
    margin:0;
    background:#f5f7fa;
    color:#333;
}

header{
    background:#1f2937;
    color:white;
    padding:40px 20px;
    text-align:center;
}

header h1{
    margin:0;
    font-size:2.5em;
}

header p{
    margin-top:10px;
    opacity:0.8;
}

nav{
    background:#111827;
    padding:10px;
    text-align:center;
}

nav a{
    color:white;
    text-decoration:none;
    margin:0 15px;
    font-weight:bold;
}

nav a:hover{
    color:#60a5fa;
}

.container{
    max-width:1000px;
    margin:auto;
    padding:30px 20px;
}

section{
    margin-bottom:50px;
}

h2{
    border-bottom:3px solid #60a5fa;
    display:inline-block;
    padding-bottom:5px;
}

.projects{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.project{
    background:white;
    border-radius:8px;
    padding:20px;
    box-shadow:0 3px 10px rgba(0,0,0,0.1);
}

.project h3{
    margin-top:0;
}

.skills{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}

.skill{
    background:#e5e7eb;
    padding:8px 12px;
    border-radius:5px;
    font-size:0.9em;
}

footer{
    background:#1f2937;
    color:white;
    text-align:center;
    padding:20px;
}

button{
    background:#60a5fa;
    border:none;
    padding:10px 15px;
    border-radius:5px;
    cursor:pointer;
}

button:hover{
    background:#3b82f6;
}

.project-category{
    margin-top:40px;
    color:#1f2937;
    font-size:1.4em;
}