/* Reset + fundo + comportamentos globais */
body {
    background: #0a0a0a;
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
    color: #fff;
}

.tela {
    display: none;
}
.tela.ativa {
    display: block;
}
.hidden {
    display: none;
}

/* ==========================================
   BOTÕES GLOBAIS
   ========================================== */

.btn-voltar {
    background: transparent;
    border: 2px solid #00ffcc;
    color: #00ffcc;
    padding: 8px 20px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: bold;
    transition: all 0.3s ease;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-voltar:hover {
    background: #00ffcc;
    color: #000;
    transform: translateX(-3px);
    box-shadow: 0 0 15px #00ffcc;
}

.btn-primary-action {
    background: #00ffcc;
    color: #000;
    border: none;
    padding: 12px 24px;
    cursor: pointer;
    font-weight: bold;
    font-family: monospace;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    border-radius: 6px;
}

.btn-primary-action:hover {
    background: #00ccaa;
    transform: scale(1.02);
}