:root {
    --primary-blue: #00008b;
    /* Azul do Logo */
    --light-grey: #f4f7f6;
    --white: #ffffff;
    --dark-text: #1a1a1a;
    --accent-blue: #0047ab;
}

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

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

/* Utilitários */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
    color: #00008b;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: var(--primary-blue);
}

/* Header */
header {
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.95);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 25px;
    list-style: none;
    align-items: center;
}

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

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

/* Footer */
footer {
    background: #0a0a0a;
    color: white;
    padding: 60px 0 20px;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.social-links a {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: 0.3s;
}

.social-links a:hover {
    background: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid #333;
    margin-top: 40px;
    padding-top: 20px;
    font-size: 0.8rem;
    opacity: 0.7;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }
}