:root {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --card-bg: #ffffff;
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --border-color: #e2e8f0;
    --footer-bg: #1e293b;
    --footer-text: #f8fafc;
    --error-color: #ef4444;
    --success-color: #10b981;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: #1e293b;
    --primary-color: #818cf8;
    --primary-hover: #6366f1;
    --border-color: #334155;
    --footer-bg: #020617;
    --footer-text: #e2e8f0;
}


/* Reset e Estilos Globais */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}


/* Header e Navegação */

header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.profile-img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-btn {
    background: none;
    border: none;
    font-size: 1rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
}

.nav-btn:hover {
    background-color: var(--border-color);
}

.nav-btn.active {
    background-color: var(--primary-color);
    color: #ffffff;
}

.theme-toggle {
    background-color: var(--border-color);
    border: none;
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
}


/* Menu Responsivo (Mobile) */

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}


/* Container Principal (Abas) */

main {
    flex: 1;
    padding: 2rem 5%;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}


/* Estilos da Seção: Sobre Mim */

.bio-text p {
    margin-bottom: 1rem;
    text-align: justify;
}

.info-tags {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.info-tag {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
}


/* Estilos da Seção: Habilidades */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.skill-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
}

.skill-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}


/* Estilos da Seção: Projetos */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.project-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.project-card h3 {
    margin-bottom: 0.5rem;
}

.project-card p {
    flex: 1;
    margin-bottom: 1rem;
}


/* Estilos da Seção: Contato */

.contact-form {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    font-size: 1rem;
}

.submit-btn:hover {
    background-color: var(--primary-hover);
}

.form-message {
    padding: 1rem;
    border-radius: 4px;
    display: none;
    font-weight: bold;
}

.form-message.success {
    display: block;
    background-color: var(--success-color);
    color: white;
}

.form-message.error {
    display: block;
    background-color: var(--error-color);
    color: white;
}


/* Footer */

footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 2rem 5%;
    margin-top: auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: var(--footer-text);
    text-decoration: none;
    font-weight: bold;
}

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


/* Responsividade */

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    nav {
        display: none;
        /* Escondido por padrão no mobile */
        width: 100%;
        flex-direction: column;
        padding-top: 1rem;
        margin-top: 1rem;
        border-top: 1px solid var(--border-color);
    }
    nav.active {
        display: flex;
        /* Mostrado quando ativado via JS */
    }
    .nav-btn {
        width: 100%;
        text-align: left;
    }
}