* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

header {
    background: #1f2933;
    padding: 20px 0;
}

nav {
    max-width: 1100px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

nav h1 {
    color: #fff;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

nav ul li a:hover {
    text-decoration: underline;
}

.hero {
    background: linear-gradient(to right, #3b82f6, #2563eb);
    color: #fff;
    padding: 80px 20px;
    text-align: center;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

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

.card {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

footer {
    background: #1f2933;
    color: #fff;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

form {
    max-width: 500px;
    margin: auto;
}

form input, form textarea, form button {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

form button {
    background: #2563eb;
    color: #fff;
    border: none;
    cursor: pointer;
}

form button:hover {
    background: #1e40af;
}