:root {
    --primary: #2563eb;
    --dark: #1e293b;
    --light: #f8fafc;
    --accent: #e0f2fe;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: var(--light);
    color: var(--dark);
}

button#copy-btn {
    cursor: pointer;
    border: none;
    font-size: .75rem;
    font-weight: normal;
    width: fit-content;
    margin: 10px auto;
    padding: 5px 10px;
    border-radius: 8px;
    border: 1px solid var(--primary);
    background: var(--accent);
    color: var(--primary);
}

button#copy-btn:hover {
    background: var(--primary);
    color: var(--light);
    /* Grow slightly on hover */
    transform: scale(1.05);
    transition: transform 0.2s, background-color 0.2s, color 0.2s;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 20px;
}

header {
    text-align: center;
    padding: 40px 0;
}

h1 {
    font-size: 3rem;
    margin: 0;
    color: var(--primary);
    letter-spacing: -1px;
}

.tagline {
    font-size: 1.25rem;
    color: #64748b;
}

.highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.card h3 {
    margin-top: 0;
    color: var(--primary);
}

main {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.details {
    list-style: none;
    padding: 0;
}

.details li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.details li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.contact-box {
    background: var(--accent);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 14px 28px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
}

.email {
    color: var(--dark);
    font-size: 0.9rem;
}

.secure-note {
    display: block;
    margin-top: 15px;
    font-size: 0.8rem;
    color: #64748b;
    text-transform: uppercase;
}

footer {
    text-align: center;
    margin-top: 60px;
    color: #94a3b8;
    font-size: 0.9rem;
}

.for-sale-sign {
    width: 120px;
    transform: translate(-150%, 50%) rotate(-10deg);
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 2.2rem;
    }
    header {
        padding: 20px 0;
    }
    .for-sale-sign {
        transform: translate(-105%, 50%) rotate(-10deg) scale(0.75);
    }
}