/* =========================================
   VARIÁVEIS DE COR (CLARO E ESCURO)
   ========================================= */
:root {
    --bg-color: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --accent: #111827;
    --accent-hover: #374151;
    --border: #e5e7eb;
    --card-bg: #f9fafb;
    --btn-text: #ffffff;
    --tag-bg: #e5e7eb;
}

/* Variáveis ativadas quando o body tem a classe dark-mode */
body.dark-mode {
    --bg-color: #111827;
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --accent: #ffffff;
    --accent-hover: #f3f4f6;
    --border: #374151;
    --card-bg: #1f2937;
    --btn-text: #111827;
    --tag-bg: #374151;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

/* Centralização total e bonita na tela */
body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center; /* Centraliza verticalmente */
    min-height: 100vh; /* Ocupa 100% da altura da tela */
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.4s ease, color 0.4s ease; /* Transição suave de tema */
}

.container {
    max-width: 800px;
    width: 100%;
    padding: 60px 20px;
    display: flex;
    flex-direction: column;
    gap: 60px;
}

/* =========================================
   BOTÃO DE TEMA
   ========================================= */
.theme-switch-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: -30px;
}

.btn-theme {
    background: transparent;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    transition: transform 0.3s ease;
    padding: 10px;
}

.btn-theme:hover {
    transform: scale(1.15) rotate(10deg);
}

/* =========================================
   CABEÇALHO / HERO SECTION
   ========================================= */
.hero {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeIn 1s ease-in-out;
}

.profile-img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 24px;
    border: 4px solid var(--border);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    transition: border-color 0.4s ease;
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.05em;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.bio {
    max-width: 500px;
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--btn-text);
    border: 2px solid var(--accent);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--text-main);
}

/* =========================================
   SEÇÕES (HABILIDADES E PROJETOS)
   ========================================= */
section {
    display: flex;
    flex-direction: column;
    align-items: center; /* Mantém o conteúdo das seções centralizado */
    text-align: center;
}

section h2 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    width: 100%;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.skill-tag {
    padding: 8px 16px;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-main);
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background-color: var(--text-main);
    color: var(--btn-text);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    width: 100%;
    text-align: left; /* Mantém o texto do card alinhado à esquerda para leitura */
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
    border-color: var(--text-muted);
}

.project-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.project-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.tech-stack {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-stack span {
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--tag-bg);
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text-main);
}

.project-link {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.project-link:hover {
    text-decoration: underline;
}

/* Animação suave ao carregar a página */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsividade para celulares e telas maiores */
@media (min-width: 600px) {
    .projects-grid {
        grid-template-columns: 1fr 1fr;
    }
}