/* Configurações Globais */
:root {
    --primary-color: #0d1117;
    --secondary-color: #161b22;
    --accent-color: #58a6ff;
    --text-color: #c9d1d9;
    --border-color: #30363d;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    background-color: var(--primary-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex-grow: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header e Navegação */
header {
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

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

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

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--accent-color);
}

/* Conteúdo da Página Principal */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: #8b949e;
}

.about, .projects {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.about p {
    line-height: 1.7;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.project-card h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Conteúdo das Páginas de App */
.app-container {
    text-align: center;
}

.app-container h1 {
    margin-bottom: 2rem;
}

.app-container iframe {
    width: 100%;
    height: 85vh; /* Altura do AppWeb na tela */
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

/* Rodapé */
footer {
    background-color: var(--secondary-color);
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    color: #8b949e;
}

footer p {
    margin: 0.25rem 0;
}

/* Responsividade para Celulares */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }
}