/* CONTENEDOR PRINCIPAL */
#opomania-builder {
    max-width: 650px;
    margin: 40px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 14px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    font-family: "Inter", "Segoe UI", Roboto, sans-serif;
}

/* TÍTULO PRINCIPAL */
#opomania-builder h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #222;
    text-align: center;
}

/* LABELS */
#opomania-builder label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    margin-top: 18px;
    color: #333;
}

/* INPUT BUSCADOR */
#opomania-search {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 16px;
    transition: all .2s ease;
}

#opomania-search:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
    outline: none;
}

/* RESULTADOS AUTOCOMPLETADO */
#opomania-search-results {
    margin-top: 8px;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
}

#opomania-search-results div {
    padding: 12px 14px;
    cursor: pointer;
    transition: background .15s;
}

#opomania-search-results div:hover {
    background: #f3f4f6;
}

/* SELECTORES */
#opomania-selectores select,
#opomania-num {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 16px;
    background: #fff;
    transition: all .2s ease;
}

#opomania-selectores select:focus,
#opomania-num:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
    outline: none;
}

/* BOTÓN GENERAR */
#opomania-generar {
    width: 100%;
    margin-top: 25px;
    padding: 14px;
    background: #2563eb;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all .2s ease;
}

#opomania-generar:hover {
    background: #1e4fc7;
    transform: translateY(-1px);
}

#opomania-generar:active {
    transform: translateY(1px);
}

/* ANIMACIONES SUAVES */
#opomania-selectores > div {
    animation: fadeIn .25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}