:root {
    --navy: #001f3f;
    --navy-light: #003366;
    --accent: #0074D7;
    --bg-color: #f4f6f9;
    --card-bg: #ffffff;
    --text-color: #333333;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-top: 70px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: var(--navy);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.2rem;
    font-weight: bold;
}

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: white;
    transition: 0.3s;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 1rem;
}

.install-btn {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.install-btn:hover {
    opacity: 0.9;
}

.main-container {
    display: flex;
    justify-content: center;
    padding: 20px;
}

.card {
    background-color: var(--card-bg);
    width: 100%;
    max-width: 650px;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.card h1 {
    font-size: 1.5rem;
    color: var(--navy);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--navy);
    color: white;
    border: none;
    width: 100%;
    padding: 12px;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: var(--navy-light);
}

.results-section {
    margin-top: 25px;
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.key-box {
    margin-bottom: 15px;
}

.key-box h4 {
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: var(--navy);
}

.key-box textarea {
    width: 100%;
    height: 80px;
    font-family: monospace;
    font-size: 0.8rem;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: vertical;
    background-color: #f9f9f9;
}

.btn-secondary {
    background-color: #e2e8f0;
    color: var(--navy);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 5px;
}

.btn-secondary:hover {
    background-color: #cbd5e1;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--navy);
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    .nav-menu.active {
        display: flex;
    }
}