/* Variáveis de Cores e Fontes */
:root {
    --primary-color: #2563eb;
    --dark-color: #1e293b;
    --light-bg: #f8fafc;
    --text-main: #334155;
    --text-muted: #64748b;
    --white: #ffffff;
    --font-main: 'Inter', sans-serif;
}

/* Reset Básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    background: var(--white);
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--dark-color);
}

.logo span { color: var(--primary-color); }

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li { margin-left: 2rem; }

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--primary-color); }

.btn-nav {
    background: var(--primary-color);
    color: white !important;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
}

/* Hero Section */
.hero {
    padding: 100px 0;
    background: linear-gradient(to bottom right, #f8fafc, #ffffff);
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span { color: var(--primary-color); }

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s;
    margin: 0 0.5rem;
}

.btn-primary { background: var(--primary-color); color: white; }
.btn-secondary { background: #e2e8f0; color: var(--dark-color); }

.btn-primary:hover { transform: translateY(-3px); }

/* Seção de Cards */
.features { padding: 80px 0; background: var(--light-bg); }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s;
}

.card:hover { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); }

.card h3 { margin-bottom: 1rem; color: var(--dark-color); }

/* Responsividade */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Oculta menu em mobile para brevidade */
    .hero h1 { font-size: 2.5rem; }
}