:root {
    --primary-blue: #0056b3;
    --dark-blue: #003d80;
    --light-blue: #e7f1ff;
    --white: #ffffff;
    --text-grey: #333333;
    --light-grey: #f8f9fa;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--white);
    color: var(--text-grey);
    line-height: 1.6;
}

header {
    background: var(--white);
    border-bottom: 3px solid var(--primary-blue);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-blue);
    text-decoration: none;
    text-transform: uppercase;
}

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

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-grey);
    font-weight: 500;
    transition: 0.3s;
}

nav ul li a:hover {
    color: var(--primary-blue);
}

.hero {
    padding: 80px 5%;
    text-align: center;
    background: linear-gradient(180deg, var(--light-blue) 0%, var(--white) 100%);
}

.hero h1 {
    font-size: 3rem;
    color: var(--dark-blue);
    margin-bottom: 20px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px;
}

.btn {
    background: var(--primary-blue);
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    display: inline-block;
    margin-top: 20px;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--dark-blue);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    padding: 30px;
    background: var(--light-grey);
    border-left: 5px solid var(--primary-blue);
    border-radius: 5px;
}

.form-group {
    margin-bottom: 15px;
}

input, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-top: 5px;
}

footer {
    background: var(--dark-blue);
    color: white;
    text-align: center;
    padding: 40px 5%;
    margin-top: 40px;
}

footer a {
    color: #ccc;
    margin: 0 10px;
    text-decoration: none;
    font-size: 0.9rem;
}

.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25d366;
    color: white;
    padding: 15px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    z-index: 1001;
}