body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: #f5f7fa;
    color: #333;
}

header.sticky {
    position: sticky;
    top: 0;
    background-color: #012c55;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 1rem;
    font-weight: bold;
}

.hero {
    background: linear-gradient(to right, #003366, #006699);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.btn {
    background: white;
    color: #003366;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    text-decoration: none;
    transition: background 0.3s;
}

.btn:hover {
    background: #eee;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.cards {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.card {
    flex: 1 1 30%;
    background: white;
    padding: 1.5rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    border-radius: 12px;
    transition: transform 0.3s;
}

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

footer {
    text-align: center;
    padding: 2rem;
    background: #012c55;
    color: white;
}

input, textarea {
    width: 100%;
    padding: 1rem;
    margin: 0.5rem 0;
    border: 1px solid #ccc;
    border-radius: 6px;
}

button {
    padding: 1rem 2rem;
    background: #012c55;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background: #014b8a;
}

.whatsapp-float {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: #25D366;
    color: white;
    padding: 12px 16px;
    border-radius: 50%;
    text-align: center;
    font-size: 24px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 1000;
}

.fade-in {
    animation: fadeIn 1s ease-in;
}
.slide-up {
    animation: slideUp 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}