@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');

        .menu-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: 15px;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        }
        .menu-list li a {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background-color: #ecf0f1;
            color: #333;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: transform 0.3s ease, background-color 0.3s ease;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        }
        .menu-list li a:hover {
            background-color: #dbe4e9;
            transform: translateY(-5px);
        }


body {
    font-family: 'Poppins', sans-serif;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(-45deg, #86290c, #000000, #000000, #eeeeee);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}


.container {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    max-width: 700px;
    width: 90%;
    box-sizing: border-box;
    margin: 20px auto;
}

h1, h2 {
    color: #2c3e50;
    text-align: center;
    font-weight: 600;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-group input:focus,
.input-group textarea:focus {
    border-color: #3498db;
    box-shadow: 0 0 8px rgba(52, 152, 219, 0.3);
    outline: none;
}

button {
    width: 100%;
    padding: 15px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    transition: background-color 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

button:hover {
    background-color: #2980b9;
}

#resultado, .message-box {
    margin-top: 25px;
    padding: 18px;
    border-radius: 8px;
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
}

.success-message {
    background-color: #d4edda;
    color: #155724;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
}

.error {
    color: #e74c3c;
    font-size: 0.9em;
    margin-top: 5px;
    display: none;
}

.error.visible {
    display: block;
}

.invalid {
    border-color: #e74c3c;
}

.navbar {
    width: 100%;
    background: rgba(44, 62, 80, 0.8);
    padding: 10px ;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.navbar a {
    color: #ecf0f1;
    padding: 12px 20px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease;
    border-radius: 6px;
}

.navbar a:hover {
    background-color: #34495e;
    color: #fff;
}