/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #2c3e50;
}

label i {
    margin-right: 10px;
    color: #3498db;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border 0.3s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus {
    border-color: #3498db;
    outline: none;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 12px 20px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #2980b9;
}

.submit-btn i {
    margin-right: 10px;
}

/* Estilos para o popup */
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.popup-content {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    max-width: 400px;
    text-align: center;
    position: relative;
}

.popup h2 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.popup h2 i {
    margin-right: 10px;
}

.popup p {
    margin-bottom: 20px;
}

.close-popup {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #7f8c8d;
}

.close-popup:hover {
    color: #34495e;
}

/* Estilo para mensagens de erro */
.error {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
}

/* Estilo para campos inválidos */
input:invalid, textarea:invalid {
    border-color: #e74c3c;
}