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

body {
    font-family: 'Arial', sans-serif;
    background: #1a1a2e;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: #2a2a4a;
    border-radius: 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    padding: 40px;
    max-width: 600px;
    width: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid #4a4a6e;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
}

.tela-inicial {
    display: block;
}

.tela-inicial h1 {
    color: #fff;
    font-size: 2.5em;
    margin-bottom: 20px;
    font-weight: bold;
}

.tela-inicial p {
    color: #b0b0d0;
    font-size: 1.2em;
    line-height: 1.6;
    margin-bottom: 30px;
}

.iniciar-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.iniciar-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.quiz-container {
    display: none;
}

.quiz-container.ativo {
    display: block;
}

.caixa-perguntas {
    background: #3a3a5a;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    border-left: 5px solid #667eea;
}

.caixa-perguntas h2 {
    color: #fff;
    font-size: 1.4em;
    line-height: 1.5;
    font-weight: 600;
}

.caixa-alternativas {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.alternativa-btn {
    background: #3a3a5a;
    border: 2px solid #4a4a6e;
    padding: 20px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1em;
    text-align: left;
    color: #e0e0e0;
}

.alternativa-btn:hover {
    border-color: #667eea;
    background: #4a4a6e;
    transform: translateX(5px);
}

.caixa-resultado {
    display: none;
    text-align: center;
}

.caixa-resultado.mostrar {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.resultado-titulo {
    color: #fff;
    font-size: 1.8em;
    margin-bottom: 20px;
    font-weight: bold;
}

.texto-resultado {
    background: #3a3a5a;
    padding: 25px;
    border-radius: 15px;
    color: #b0b0d0;
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
    border-left: 5px solid #667eea;
}

.novamente-btn {
    background: linear-gradient(135deg, #764ba2, #667eea);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.3s ease;
    font-weight: 600;
}

.novamente-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(118, 75, 162, 0.4);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #4a4a6e;
    border-radius: 4px;
    margin-bottom: 30px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
        margin: 10px;
    }
    
    .tela-inicial h1 {
        font-size: 2em;
    }
    
    .iniciar-btn {
        padding: 12px 30px;
        font-size: 1.1em;
    }
}