/* --- VARIÁVEIS DE COR --- */
:root {
    --primary-bg: #111111; /* Fundo escuro para destacar o logo metálico */
    --secondary-bg: #1a1a1a;
    --accent-color: #A8B1B8; /* Tom prateado/metálico inspirado no logo */
    --text-light: #f5f5f5;
    --text-dark: #333333;
}

/* --- RESET BÁSICO --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
    font-family: 'Montserrat', sans-serif; 
    color: var(--text-dark); 
    background-color: #fafafa; 
}
h1, h2, h3, .logo { font-family: 'Playfair Display', serif; }

/* --- CABEÇALHO E NAVEGAÇÃO --- */
header {
    position: fixed; 
    width: 100%; 
    top: 0; 
    z-index: 1000;
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    padding: 25px 50px; 
    transition: all 0.4s ease;
    background: transparent; 
    color: var(--text-light);
}
/* Classe adicionada via JS ao rolar a página */
header.scrolled { 
    background-color: var(--primary-bg); 
    padding: 15px 50px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.5); 
}
.logo { 
    font-size: 28px; 
    font-weight: 700; 
    letter-spacing: 3px; 
    text-transform: uppercase; 
}
nav ul { list-style: none; display: flex; gap: 40px; }
nav a { 
    color: inherit; 
    text-decoration: none; 
    font-size: 13px; 
    text-transform: uppercase; 
    letter-spacing: 2px; 
    transition: color 0.3s; 
}
nav a:hover { color: var(--accent-color); }

/* --- SESSÃO HERO (Principal) --- */
.hero {
    height: 100vh;
    /* Imagem de fundo temporária de uma casa de luxo */
    background: linear-gradient(rgba(17, 17, 17, 0.7), rgba(17, 17, 17, 0.5)), url('https://images.unsplash.com/photo-1600596542815-ffad4c1539a9?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center;
    text-align: center; 
    color: var(--text-light); 
    padding: 0 20px;
}
.hero h1 { 
    font-size: 4rem; 
    margin-bottom: 20px; 
    font-weight: 700; 
    letter-spacing: 2px; 
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}
.hero p { 
    font-size: 1.2rem; 
    max-width: 650px; 
    margin-bottom: 40px; 
    font-weight: 300; 
    line-height: 1.8; 
}
.btn {
    padding: 15px 40px; 
    background-color: transparent; 
    border: 1px solid var(--accent-color);
    color: var(--text-light); 
    text-decoration: none; 
    font-size: 14px; 
    text-transform: uppercase;
    letter-spacing: 2px; 
    transition: all 0.3s; 
    cursor: pointer;
}
.btn:hover { 
    background-color: var(--accent-color); 
    color: var(--primary-bg); 
}

/* --- SESSÃO DE DIFERENCIAIS (Sobre) --- */
.features { 
    padding: 100px 20px; 
    text-align: center; 
    max-width: 1200px; 
    margin: 0 auto; 
}
.features h2 { 
    font-size: 2.5rem; 
    margin-bottom: 60px; 
    color: var(--primary-bg); 
}
.cards { 
    display: flex; 
    justify-content: space-between; 
    gap: 30px; 
    flex-wrap: wrap; 
}
.card { 
    flex: 1; 
    min-width: 300px; 
    padding: 50px 30px; 
    background: #ffffff; 
    box-shadow: 0 10px 30px rgba(0,0,0,0.05); 
    border-bottom: 3px solid var(--accent-color);
    transition: transform 0.3s ease;
}
.card:hover { transform: translateY(-10px); }
.card h3 { 
    font-size: 1.5rem; 
    margin-bottom: 20px; 
    color: var(--primary-bg);
}
.card p { 
    font-size: 1rem; 
    color: #666; 
    line-height: 1.7; 
    font-weight: 300;
}

/* --- RODAPÉ --- */
footer { 
    background-color: var(--primary-bg); 
    color: #888; 
    text-align: center; 
    padding: 40px 20px; 
    font-size: 13px; 
    letter-spacing: 1px;
}

/* --- RESPONSIVIDADE (Celulares) --- */
@media(max-width: 768px) {
    header { padding: 20px; flex-direction: column; gap: 15px; background-color: var(--primary-bg); }
    nav ul { gap: 20px; flex-wrap: wrap; justify-content: center;}
    .hero h1 { font-size: 2.5rem; }
}