body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #fdfdfd;
    color: #555;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
    padding: 0 20px;
}

.header-container {
    width: 80%;
    margin: auto;
    padding: 0 20px;
}

header {
    background: #2c3e50;
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: #1abc9c 3px solid;
}

header h1 {
    text-align: center;
    margin: 0;
    font-size: 2.5em;
    padding-bottom: 10px;
}

header p {
    text-align: center;
    font-size: 1.2em;
}

.tagline {
    text-align: center;
    font-size: 1.1em;
    margin-top: 5px;
    margin-bottom: 15px;
    color: #a7a7a7; /* Lighter color for secondary text */
}

nav {
    display: flex;
    justify-content: center;
    padding-top: 10px;
    padding-bottom: 10px;
    flex-wrap: wrap;
}

nav ul {
    padding: 0;
    list-style: none;
}

nav ul li {
    display: inline;
    padding: 0 20px;
}

nav a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}

nav a:hover {
    color: #1abc9c;
    font-weight: bold;
}

section {
    padding: 20px 0;
    border-bottom: 1px solid #ddd;
}

section h2 {
    text-align: center;
    padding-bottom: 20px;
    font-size: 2em;
}

#about {
    background: #fff;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.expertise-card {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.expertise-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.expertise-card h3 {
    margin-top: 0;
}

.job {
    margin-bottom: 20px;
}

.job h3 {
    margin-bottom: 10px;
}

#skills ul {
    list-style: none;
    padding: 0;
    text-align: center;
}

#skills ul li {
    display: inline-block;
    background: #1abc9c;
    color: #fff;
    padding: 5px 15px;
    margin: 5px;
    border-radius: 5px;
}

#contact a {
    color: #555;
    text-decoration: none;
}

#contact a:hover {
    color: #1abc9c;
}


footer {
    text-align: center;
    padding: 30px 0;
    background: #2c3e50;
    color: #fff;
}

@media (max-width: 768px) {
    .container, .header-container {
        width: 95%;
        padding: 0 10px;
    }

    header h1 {
        font-size: 2em;
    }

    header p {
        font-size: 1em;
    }

    .tagline {
        font-size: 0.9em;
    }

    nav ul li {
        display: block;
        text-align: center;
        padding: 10px 0;
    }

    .expertise-grid {
        grid-template-columns: 1fr;
    }
}