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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.floating-particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-particle:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-particle:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-particle:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
}

.floating-particle:nth-child(4) {
    width: 100px;
    height: 100px;
    top: 40%;
    right: 25%;
    animation-delay: 1s;
}

.floating-particle:nth-child(5) {
    width: 70px;
    height: 70px;
    bottom: 20%;
    right: 10%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.3;
    }
}

.caixa-principal {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 40px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 20px rgba(255, 255, 255, 0.5);
    max-width: 700px;
    width: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.caixa-principal::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
    z-index: -1;
    border-radius: 27px;
    animation: border-glow 3s ease-in-out infinite alternate;
}

@keyframes border-glow {
    0% {
        filter: blur(10px);
        opacity: 0.5;
    }
    100% {
        filter: blur(20px);
        opacity: 0.8;
    }
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(102, 126, 234, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: #667eea;
}

.logo i {
    font-size: 32px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.progress-bar {
    width: 120px;
    height: 8px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    width: 0%;
    transition: width 0.3s ease;
}

.caixa-perguntas {
    margin-bottom: 40px;
}

.pergunta-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.pergunta-numero {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
}

.timer {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #666;
    font-weight: 600;
}

.timer i {
    color: #ff6b6b;
}

.titulo-quiz {
    color: #333;
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.pergunta-texto {
    font-size: 20px;
    color: #555;
    margin-bottom: 30px;
    line-height: 1.6;
    font-weight: 500;
}

.caixa-alternativas {
    display: grid;
    gap: 15px;
    margin-bottom: 40px;
}

.btn-iniciar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 20px 40px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 auto;
    max-width: 250px;
}

.btn-iniciar:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-iniciar:active {
    transform: translateY(0);
}

.alternativa {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #333;
    border: 2px solid #e9ecef;
    padding: 20px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.alternativa::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.alternativa:hover::before {
    left: 100%;
}

.alternativa:hover {
    transform: translateX(5px);
    border-color: #667eea;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.alternativa.correta {
    background: linear-gradient(135deg, #4caf50, #45a049);
    color: white;
    border-color: #4caf50;
}

.alternativa.incorreta {
    background: linear-gradient(135deg, #ff6b6b, #ff4757);
    color: white;
    border-color: #ff6b6b;
}

.caixa-resultado {
    margin-top: 30px;
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    border: 2px dashed #667eea;
}

.resultado-icon {
    font-size: 60px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.texto-resultado {
    font-size: 22px;
    color: #333;
    font-weight: 600;
    margin-bottom: 25px;
}

.resultado-detalhes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.stat-item {
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.stat-item i {
    font-size: 24px;
    display: block;
    margin-bottom: 10px;
}

.stat-value {
    display: block;
    font-size: 24px;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    display: block;
    color: #666;
    font-size: 14px;
}

.btn-reiniciar {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.btn-reiniciar:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(40, 167, 69, 0.4);
}

.footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
    color: #666;
    font-size: 14px;
}

.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .caixa-principal {
        padding: 30px 20px;
        margin: 10px;
        border-radius: 20px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
    }
    
    .titulo-quiz {
        font-size: 24px;
    }
    
    .pergunta-texto {
        font-size: 18px;
    }
    
    .resultado-detalhes {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .btn-iniciar {
        padding: 18px 30px;
        font-size: 16px;
    }
    
    .alternativa {
        padding: 18px;
        font-size: 15px;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.6s ease-out;
}