body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1f4037, #99f2c8);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: rgba(0, 0, 0, 0.65);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    text-align: center;
    width: 100%;
    max-width: 450px;
    transition: transform 0.3s ease;
}

.container:hover {
    transform: scale(1.02);
}

h1 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #1abc9c;
}

h2 {
    font-size: 22px;
    margin-bottom: 10px;
    color: #f1c40f;
}

form {
    display: flex;
    flex-direction: column;
}

input {
    padding: 12px;
    margin: 6px 0;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    background-color: #ecf0f1;
    color: #2c3e50;
    transition: box-shadow 0.3s ease;
}

input:focus {
    outline: none;
    box-shadow: 0 0 0 2px #1abc9c;
}

button {
    background: #1abc9c;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 12px;
    transition: background 0.3s ease, transform 0.2s ease;
}

button:hover {
    background: #16a085;
    transform: translateY(-2px);
}

#calificar {
    background: #e67e22;
}

#calificar:hover {
    background: #d35400;
}

#resultado {
    margin-top: 25px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    box-shadow: inset 0 0 8px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
}

p {
    margin: 6px 0;
    font-size: 16px;
}