/* ======== ESTILO GENERAL DEL FONDO ======== */
body {
    font-family: Arial, sans-serif;
   background:url("https://img.freepik.com/foto-gratis/fondo-abstracto-borroso_58702-1514.jpg?semt=ais_hybrid&w=740&q=80");
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

/* ======== CONTENEDOR DEL FORMULARIO ======== */
.form-container {
    background: #889b6bc2;
    padding: 25px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    max-width: 700px;
    width: 90%;
    border: 2px solid #279c5c;
}

/* ======== TITULOS ======== */
h1 {
    text-align: center;
    color: #000;
    margin-bottom: 20px;
}

h3 {
    text-align: center;
    color: #000;
    margin-bottom: 20px;
}

/* ======== ETIQUETAS ======== */
label {
    font-weight: bold;
    display: block;
    margin: 15px 0 8px;
    color: #444;
}

/* ======== CAMPOS DE TEXTO ======== */
textarea {
    width: 100%;
    height: 90px;
    border: 1px solid rgb(9, 174, 250);
    border-radius: 6px;
    padding: 10px;
    font-size: 14px;
    resize: vertical;
    transition: border-color 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: #7b8d49;
}

/* ======== BOTONES CENTRADOS ======== */
.botones,
.button-group {
    text-align: center;
    margin-top: 20px;
}

/* ======== BOTÓN ANIMADO PRINCIPAL ======== */
.btn {
    font-size: 32px;
    font-weight: 700;
    color: rgb(63, 89, 79);
    padding: 10px 80px;
    border-radius: 60px;
    background: linear-gradient(90deg, #62b866, #87a380, #37834a);
    border: 6px solid rgb(13, 53, 10);
    box-shadow: 0px 10px 0px #000;
    cursor: pointer;
    transition: transform .15s ease-in-out, box-shadow .15s;
}

.btn:hover {
    transform: translateY(-4px);
    box-shadow: 0px 14px 0px #000;
}

.btn:active {
    transform: translateY(4px);
    box-shadow: 0px 5px 0px #000;
}

.mensaje {
    text-align: center;
    margin-top: 15px;
    font-weight: bold;
    color: #282828;
    display: none;
}