:root {
    --primary-color: #25D366;
    --accent-color: #00d4ff; 
    --bg-dark: #0a0a0a; 
    --card-bg: #161616; 
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
}


body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    color: var(--text-main);
}


.landing-container {
    background-color: var(--card-bg);
    width: 100%;
    max-width: 450px;
    min-height: 100vh;
    box-shadow: 0 0 40px rgba(0,0,0,0.8);
    display: flex;
    flex-direction: column;
}


.image-section img {
    width: 100%;
    height: auto;
    display: block;
    border-bottom: 2px solid #222;
}


.info-section {
    padding: 35px 20px;
    text-align: center;
}


h1 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    font-weight: bold;
}


.description {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 30px;
}


.price-tag {
    font-size: 2.8rem;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 40px;
}


.currency {
    font-size: 1.1rem;
    margin-right: 8px;
    color: var(--text-muted);
}


.btn-whatsapp {
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 18px 30px;
    font-size: 1.25rem;
    font-weight: bold;
    border-radius: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: 0.3s;
    width: 85%;
    animation: pulse-glow 2.5s infinite;
}


@keyframes pulse-glow {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { transform: scale(1.03); box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}


footer {
    margin-top: auto;
    padding: 25px;
    text-align: center;
    font-size: 0.85rem;
    background: #0f0f0f;
    color: #444;
    border-top: 1px solid #222;
}