@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* VARIÁVEIS CSS (Preparadas para Dark Mode) */
:root {
    --bg-color: #f5f5f7;
    --surface-color: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent: #0066cc;
    --accent-hover: #004499;
    --nav-bg: rgba(255, 255, 255, 0.75);
    --border-color: rgba(0,0,0,0.08);
    --timeline-bg: rgba(0,0,0,0.04);
    --border-radius: 18px;
    --border-radius-sm: 10px;
    --transition: all 0.3s ease;
}

/* TEMA ESCURO */
[data-theme="dark"] {
    --bg-color: #000000;
    --surface-color: #1c1c1e;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --accent: #2997ff;
    --accent-hover: #147ce5;
    --nav-bg: rgba(28, 28, 30, 0.75);
    --border-color: rgba(255,255,255,0.1);
    --timeline-bg: rgba(255,255,255,0.08);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* NAVBAR */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.5px;
}

.nav-brand span {
    font-weight: 400;
    color: var(--text-secondary);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
}

/* AÇÕES DO MENU (Redes e Tema) */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.social-icon {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.social-icon:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.theme-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-btn:hover {
    background: var(--timeline-bg);
}

/* BOTÃO MENU MOBILE */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* CONTAINER GERAL */
.container {
    max-width: 1000px;
    margin: 100px auto 60px auto;
    padding: 0 30px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeTab 0.4s ease forwards;
}

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

/* HERO SECTION */
.hero { margin-bottom: 50px; }
.hero h1 { font-size: 3rem; letter-spacing: -1px; margin-bottom: 5px; }
.hero h2 { font-size: 1.5rem; color: var(--text-secondary); font-weight: 400; margin-bottom: 20px; }
.bio { font-size: 1.1rem; color: var(--text-primary); max-width: 800px; margin-bottom: 20px; }
.contact-info { display: flex; gap: 20px; flex-wrap: wrap; font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 25px; }

/* BOTÕES PRINCIPAIS */
.hero-actions { margin-top: 20px; }
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 4px 10px rgba(0, 102, 204, 0.3);
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 102, 204, 0.4);
}

/* ESTRUTURA CV */
.cv-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 50px; }
h3 { font-size: 1.3rem; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.margin-top { margin-top: 40px; }

/* TIMELINE */
.timeline { border-left: 2px solid var(--border-color); padding-left: 25px; margin-bottom: 40px; }
.timeline-item { position: relative; margin-bottom: 30px; }
.timeline-dot { position: absolute; left: -32px; top: 5px; width: 12px; height: 12px; background-color: var(--surface-color); border: 2px solid var(--accent); border-radius: 50%; }
.timeline-item h4 { font-size: 1.1rem; margin-bottom: 2px; }
.timeline-item h5 { font-size: 0.95rem; color: var(--text-secondary); font-weight: 400; }
.timeline-item .date { display: inline-block; font-size: 0.85rem; color: var(--text-secondary); background: var(--timeline-bg); padding: 3px 8px; border-radius: 6px; margin: 8px 0; }
.timeline-item p { font-size: 0.95rem; color: var(--text-secondary); }

/* SKILLS TAGS */
.skills-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag { background: var(--surface-color); border: 1px solid var(--border-color); padding: 8px 14px; border-radius: var(--border-radius-sm); font-size: 0.9rem; font-weight: 500; transition: var(--transition); }
.tag:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }

/* IDIOMAS */
.language-cards { display: flex; flex-direction: column; gap: 15px; }
.lang-card { background: var(--surface-color); border: 1px solid var(--border-color); padding: 15px; border-radius: var(--border-radius-sm); }
.lang-header { display: flex; justify-content: space-between; align-items: center; }
.lang-level { font-size: 0.8rem; font-weight: 600; color: var(--accent); background: var(--timeline-bg); padding: 3px 8px; border-radius: 6px; }
.lang-stats { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border-color); font-size: 0.85rem; display: flex; justify-content: space-between; }

/* PROJETOS */
.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 { font-size: 2.5rem; border: none; margin-bottom: 10px; }
.section-header p { color: var(--text-secondary); font-size: 1.1rem; }
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.project-card { background: var(--surface-color); border-radius: var(--border-radius); overflow: hidden; border: 1px solid var(--border-color); transition: var(--transition); display: flex; flex-direction: column; }
.project-card:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.project-visual { height: 180px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.nuance-bg { background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%); }
[data-theme="dark"] .nuance-bg { background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%); }
.sentinel-bg { background: linear-gradient(135deg, #1d1d1f 0%, #434344 100%); }
.project-image { width: 100%; height: 100%; object-fit: cover; }
.sentinel-icon { width: 60px; height: 60px; color: #ffffff; }

.project-info { padding: 25px; flex-grow: 1; display: flex; flex-direction: column; }
.project-info h3 { border: none; margin: 0; padding: 0; font-size: 1.4rem; }

/* TECH STACK TAGS */
.tech-stack { display: flex; gap: 8px; margin: 10px 0 15px 0; }
.tech-tag { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; background: var(--timeline-bg); color: var(--accent); padding: 4px 8px; border-radius: 4px; }

.project-bio { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 25px; flex-grow: 1; }
.btn-github { display: flex; align-items: center; justify-content: center; gap: 8px; background: var(--text-primary); color: var(--bg-color); text-decoration: none; padding: 12px; border-radius: var(--border-radius-sm); font-weight: 500; font-size: 0.95rem; transition: var(--transition); }
.btn-github:hover { opacity: 0.8; }

.more-card { background: transparent; border: 2px dashed var(--border-color); justify-content: center; align-items: center; text-align: center; min-height: 350px; }
.more-card:hover { border-color: var(--text-secondary); background: var(--timeline-bg); }
.more-content { padding: 30px; }
.more-icon { font-size: 2rem; color: var(--text-secondary); margin-bottom: 10px; letter-spacing: 2px; }
.more-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* CALL TO ACTION */
.cta-section { text-align: center; margin-top: 80px; padding: 50px 30px; background: var(--surface-color); border-radius: var(--border-radius); border: 1px solid var(--border-color); }
.cta-section h2 { border: none; margin-bottom: 15px; font-size: 2rem; }
.cta-section p { color: var(--text-secondary); margin-bottom: 25px; font-size: 1.1rem; }

/* ANIMAÇÕES */
.fade-in { opacity: 0; animation: fadeInAnim 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
@keyframes fadeInAnim { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }


/* --- MEDIA QUERIES (RESPONSIVIDADE PARA MOBILE) --- */
@media (max-width: 768px) {
    /* Grid de CV passa para 1 coluna */
    .cv-grid { 
        grid-template-columns: 1fr; 
    }
    
    /* Mostrar botão do menu hambúrguer */
    .mobile-menu-btn {
        display: block;
        order: 2; /* Coloca o botão do lado direito */
    }

    /* Esconder os links normais e ações, preparando para o menu dropdown */
    .nav-links, .nav-actions {
        display: none;
        flex-direction: column;
        width: 100%;
        text-align: center;
        background-color: var(--surface-color);
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    /* Quando a classe 'active' for adicionada ao menu, mostra-o */
    .nav-links.active, .nav-actions.active {
        display: flex;
    }

    /* Ajustar posição absoluta do menu dropdown */
    .nav-content {
        flex-wrap: wrap; /* Permite que o menu caia para a linha de baixo */
        padding: 15px 20px;
    }
    
    .nav-brand {
        order: 1; /* Mantém o logo à esquerda */
    }

    .nav-links {
        order: 3; /* Menu dropdown cai para baixo */
        margin-top: 15px;
        gap: 15px;
        border-bottom: none;
        padding-bottom: 0;
    }

    .nav-actions {
        order: 4; /* Redes sociais debaixo do menu dropdown */
        flex-direction: row;
        justify-content: center;
        padding-top: 15px;
    }
    
    /* Animação do botão hambúrguer quando ativo (vira um X) */
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Ajustes de texto para ecrãs menores */
    .hero h1 { font-size: 2.2rem; }
    .hero h2 { font-size: 1.2rem; }
    .container { padding: 0 20px; margin-top: 80px; }
}