* {
    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 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.login-box {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

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

.login-header {
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.login-header i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.login-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.login-form {
    padding: 40px 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group label i {
    margin-right: 8px;
    color: #4285f4;
    width: 16px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #f8f9fa;
}

.form-group input:focus {
    outline: none;
    border-color: #4285f4;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(66, 133, 244, 0.3);
}

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

.login-btn i {
    margin-right: 8px;
}

.mensagem {
    margin-top: 20px;
    padding: 12px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.mensagem.sucesso {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.mensagem.erro {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading .login-btn {
    background: #ccc;
}

/* Responsividade */
@media (max-width: 480px) {
    .login-container {
        padding: 10px;
    }
    
    .login-header {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .login-form {
        padding: 30px 20px;
    }
    
    .form-group input {
        padding: 10px 12px;
    }
    
    .login-btn {
        padding: 12px;
        font-size: 1rem;
    }
}