:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --text-color: #333;
    --card-background: #fff;
    --shadow: 0 4px 8px rgba(0,0,0,0.1);
}

body {
    font-family: sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

header {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem;
    background-image: linear-gradient(45deg, #007bff, #0056b3);
}

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

nav {
    display: flex;
    justify-content: center;
    background: var(--card-background);
    box-shadow: var(--shadow);
}

nav button {
    background: none;
    border: none;
    padding: 1rem 2rem;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--secondary-color);
    transition: color 0.3s, border-bottom 0.3s;
}

nav button.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

main {
    padding: 2rem;
    max-width: 900px;
    margin: auto;
}

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

.job-listing, form {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
    transition: transform 0.2s;
}

.job-listing:hover {
    transform: translateY(-5px);
}

.job-listing h3 {
    margin-top: 0;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input, textarea, button {
    padding: 0.8rem;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
    background-color: #343a40;
    color: white;
}