:root {
    --bg-color: #0a0a0b;
    --bg-alt: #111112;
    --gold: #c5a059;
    --text-white: #ffffff;
    --text-gray: #a0a0a0;
    --card-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
    scroll-behavior: smooth;
}

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

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem 5%;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(10, 10, 11, 0.9);
    z-index: 100;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--gold);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 4rem 5%;
    min-height: 90vh;
}

h1 { font-size: 3.5rem; line-height: 1.1; margin-bottom: 1.5rem; }
.tagline { color: var(--gold); font-weight: bold; margin-bottom: 1rem; }
.description { color: var(--text-gray); font-size: 1.1rem; margin-bottom: 2rem; }

model-viewer {
    width: 100%;
    height: 600px;
    --progress-bar-color: var(--gold);
}

.controls-hint {
    position: absolute;
    bottom: 20%;
    right: 5%;
    color: var(--text-gray);
    font-size: 0.75rem;
    text-align: center;
}

/* Estrutura Geral de Seções */
.section-container {
    padding: 6rem 5%;
}

.section-content {
    max-width: 1200px;
    margin: 0 auto;
}

.alternate-bg { background-color: var(--bg-alt); }

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--gold);
}

.text-center { text-align: center; }

/* Grids e Layouts */
.grid-two-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.highlight-box {
    background: var(--bg-alt);
    padding: 2.5rem;
    border-left: 4px solid var(--gold);
}

.highlight-box ul { list-style: none; }
.highlight-box li { margin-bottom: 1rem; font-size: 1.2rem; }

/* Testemunhos */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-alt);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
}

.testimonial-card span {
    display: block;
    margin-top: 1rem;
    color: var(--gold);
    font-weight: bold;
}

footer {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
    font-size: 0.8rem;
    border-top: 1px solid #222;
}

/* Responsividade */
@media (max-width: 968px) {
    .hero, .grid-two-cols { grid-template-columns: 1fr; text-align: center; }
    h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
    model-viewer { height: 400px; }
}