body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f0fdf4;
    color: #065f46;
}

header {
    background: #065f46;
    color: white;
    padding: 15px;
    text-align: center;
}

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

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

.hero {
    text-align: center;
    padding: 50px 20px;
}

.btn {
    background: #10b981;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.btn:hover {
    background: #059669;
}

.tips-container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
}

.tip-card {
    background: white;
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.tip-card:hover {
    transform: scale(1.05);
}

.calculator {
    max-width: 400px;
    margin: auto;
    padding: 20px;
}

label {
    display: block;
    margin-top: 10px;
}

input {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
}

footer {
    text-align: center;
    padding: 10px;
    background: #065f46;
    color: white;
    margin-top: 30px;
}